12 Car Mods That'll Save You Money At The Pump (And 11 That Are Garbage) (2023)

Unless you're a regular on the Forbes list of the world's billionaires, the chances are that, at some point, you've been concerned about the cost of putting gas in your car. According to AAA, the national average price is $2.52 per gallon, with Texas and South Carolina residents having the cheapest gas at only $2.28 per gallon (sorry, Hawaii—you have to pay the highest at $3.50 per gallon). These prices are still a heck of a lot better than the highest recorded average of $4.11 per gallon back in 2008, but it's still a plenty big chunk of change.

Updated March 2022: Decreasing your car's fuel consumption is more beneficial than ever. Although many vehicles have done a great job of ditching gas and moving to hybrid or full EV, many are still at the mercy of the pump. That's why we've updated this list to include more bogus ways of saving fuel and some additional mods that actually work.

It's a given that drivers have other expenses in their lives than just filling their cars with gas, and so, every dollar that we can free up from the fuel pump is one we can spend elsewhere (yes, we know guacamole is extra). Therefore, it's no surprise that many people take steps to increase their fuel efficiency. For example, consider hypermiling, a driving method for maximally increasing your vehicle's energy efficiency. Standard hypermiling techniques include accelerating and decelerating slowly, following the speed limit, and avoiding busy roads.

But is there anything else you can do to put your gas guzzler on a diet? Thousands of mods on the market promise to do just that. Unfortunately, these mods make a lot of outrageous claims. How do you know which ones are worth it and which are just gunning for your wallet? Fear not—we're here to help.

Related: These New Three-Row SUVs Have The Best Gas Mileage


23 Legit: Oil Swaps

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Engine oil helps lubricate internal components of the engine to help it run most efficiently. The factory determines the weight of the oil or viscosity based on their standards, yet a simple swap could help save money at the pump. Many vehicles use conventional oil to lubricate parts, but synthetic oil is more effective at providing lube where it's needed most.

Though full synthetic oil is up to three times as expensive, the swap is generally worth it. The synthetic oil doesn't break down as fast, it's more consistent, and less energy is lost through heat. We say to spring for the pricier oil change for these reasons alone. Plus, you'll be doing fewer oil changes in the long run!

22 Crazy: Upgraded Exhaust

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It's pretty well-known that our stock exhaust systems limit the car's performance. This reasoning has led many to swap out their stock system for an upgraded kit. Whether it is a cat-back, a complete system, or straight pipes, car enthusiasts have been changing the limiting options and going for something better.

While this is a great idea to unlock more power from your engine, it won't improve gas mileage. In fact, because these systems look to utilize the gasses escaping your car, you will likely see a drop in mileage. It's worth it for those looking to gain extra speed, but be prepared to shell extra cash at the pump.

21 Legit: Take Your Belt Off

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Serpentine belts help use the energy from the engine to power vital systems like air conditioning, water pumps, and cooling fans. The problem is because they rely on a mechanical function, it takes efficiency away from the engine. Removing the belt entirely wouldn't be an excellent experience for the driver, though.

To combat this extra wear and tear on the engine and the reduced mileage, many have converted the mechanical systems into electrical systems. This way, the battery takes most of the work, with the alternator being the single component that will still need the power from the engine. We guess the world really is going electric!

(Video) This Illegal Car Mod Just Changed the Game

20 Crazy: Fuel Magnets

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Fuel magnets claim to increase the efficiency of your vehicle by breaking up fuel molecule clusters into smaller, more combustible fragments. Simply place the magnets around your fuel line about two inches from the engine, so they say, and you'll instantly see a 24% improvement in MPG.

These handy tools also supposedly eliminate carbon and varnish deposits, thus saving wear and tear on your engine. And all this can be yours for the low price of $7.99. Okay, really? Not to get too scientific, but at the chemical level, gasoline is an alkane, which is a tree-like structure of hydrogen and carbon atoms, neither of which are magnetic. In fact, there are only four metals that are considered magnetic: iron, nickel, cobalt, and manganese. And none of these are used in gasoline. In the end, fuel magnets do nothing but waste your $7.99.

19 Legit: Aerodynamic The Heck Out Of Everything

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This is a page from the hypermiling playbook. Make your vehicle as utterly and ridiculously aerodynamic as it can possibly be. This includes reasonably simple mods, such as using grille blocks and truck-bed covers and removing bike racks and mud flaps. But if you really want to go aerodynamic to extremes, you can also remove door handles, badges, antennas, and windshield wipers. Front license plates and side mirrors should be removed for ultra-aerodynamic efficiency, but this is sometimes illegal, depending on where you live. And don't forget to cover over any holes left behind.

It's a philosophy akin to how tiny drops of water, when combined, make a mighty ocean. Combine these mods with a hypermiling driving technique, and you'll definitely be visiting the fuel pump less often in the future.

18 Crazy: Vortex Generators

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These weird little shark fins supposedly reduce drag and increase downforce, turning your sad little daily driver into a weekend racing machine! Or not so much. They pretty much only increase the efficiency of your car in the same way that having light-up shoes as a kid made you run faster—in other words, only in your imagination. Don't believe us? If cars, planes, and different types of vehicles are regularly tested in wind tunnels, why haven't any of the engineers begun adding these to their production vehicles?

Yet, we're sure the company selling these self-adhesive plastic bits for $14 absolutely had them evaluated in a wind tunnel first (*sarcasm alert*). So, if you like the look of them, install and enjoy them by all means. But don't have any illusions that they'll manage to accomplish something that all those aerodynamic engineers somehow failed to do.

17 Legit: ScanGauge OBD II Monitor

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According to the US Department of Energy, aggressive driving can lower your fuel efficiency by up to 40%. That's where the ScanGauge OBD II Monitor comes in. By using one of these easy-to-install, relatively inexpensive tools (around $130-$160 depending on how good of a deal you find), you'll get real-time observations on your MPG. This'll allow you to polish your driving habits to achieve maximum fuel efficiency.

When you're given immediate feedback that your lead foot is costing you actual, real money, you'll probably be encouraged to be a bit more gentle with the gas pedal. The same goes for slamming on the breaks, idling in traffic, and driving at inconsistent speeds. How are you going to spend your 40% fuel savings?

Related:These 10 Full-Size Trucks Have The Best Gas Mileage

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16 Crazy: Water Injection

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Water-injection kits actually do serve a purpose. If your car has an engine knock due to pre-ignition, a condition in which the fuel ignites prematurely, a water-injection kit can help cool things down and delay ignition. But now, let's talk about what water injection won't do.

It won't slow the rate at which your car burns fuel, so it won't make your vehicle more fuel-efficient. It won't make your car faster, even though drag racers use it (for the reason mentioned above). And even worse, because most cars have a preferred fuel-to-air ratio, simply introducing water without doing something else to maintain that ratio will just make your vehicle perform worse. Instead, why not put that water to better use and wash your car?

15 Legit: Low-Rolling Resistance Tires

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The US Department of Energy estimates that 3% to 11% of fuel consumption of the light-duty type is used to combat rolling resistance, which the definition is "the energy lost from drag and friction of a tire rolling over a surface." You may already be able to improve your MPG with the tires you currently have, though. Simply inflate them to the recommended levels in the owner's manual, and according to the DoE, you could improve your fuel economy by 3%. But if that's not quite enough, you can look into low-rolling-resistance tires.

Designed to ease the car's movement, these tires can save you up to $78 per year in fuel costs, according to Consumer Reports. But considering the tires themselves will cost you quite a bit more than $78, it really only makes sense to switch if you're in the market for new tires anyway.

14 Crazy: Aftermarket Cold Air Kits

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Cold-air kits come from the same line of thinking as water-injection kits. If you cool things down, so they say, you'll burn fuel slower and make your engine more efficient, and have a magical talking unicorn for a best friend. Okay, they don't really say that last part, but they may as well because it's all just wishful thinking.

Cool-air kits seek to pull air from outside the engine compartment because it's, well, cooler. They have long tubes with weird bends to accomplish this, but what ends up happening is that the airflow into the engine becomes inconsistent, which reduces power and efficiency, especially if your motor has a Mass Airflow Sensor. It turns out cold-air kits are just full of hot air.

13 Legit: Solar Panel

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To be honest, this entry is both legit and crazy. If you're a super eco-conscious person with money to burn, you could put solar panels in your vehicle. Rather than power the car, the panels collect energy to help with start-up, which reduces stress on the alternator. Less stress over time adds up to a more efficient vehicle.

But since these panels are insanely expensive (around $10,000!), it doesn't make a ton of sense to spend that kind of money just for a tiny bit of added engine efficiency. However, the technology is still progressing, and in all likelihood, one day, this will be a completely legitimate way of powering our vehicles. I'm not here to tell you what to do with your money, so if you like the idea, then go eco-wild.

(Video) Testing Fuel Economy Hacks

12 Crazy: Spoilers & Body Kits

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This entry comes from the same place as the vortex generators. Some spoilers and body kits do improve the aerodynamics of your vehicle, thus increasing your fuel efficiency. But these types of mods have been rigorously tested by the manufacturers and are usually priced as such.

So, if your front bumper lip comes in a self-adhesive roll that you got off the internet, odds are it's not going to be all that helpful. Or if that spoiler is a one-size-fits-all model, it's going to be about as successful as one-size-fits-all pants—which is to say, not at all. In fact, hypermilers often remove spoilers to save weight. So, if your goal is to look cool, then do whatever you want. But if your goal is to increase MPGs, step away from the body kits.

11 Legit: Grounding Wires And Cables

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Unless you own one of those cars from ye olde days that you start with a hand crank, your vehicle is nothing without its electrical system. Everything from your stereo to your air conditioning to your throttle, which, of course, controls fuel flow, is all connected via wires and fuses to the battery's negative terminal.

Over time, these wires wear out, which means the electrical systems in your car have to work that much harder to get things done. That's why it's worth it to invest in quality grounding wires and cables. If you keep your car's electrical systems in tip-top shape, you won't be wasting extra fuel because your throttle was lagging. Plus, good grounding wires are pretty affordable, so it's really a no-brainer.

10 Crazy: Miracle Carburetor

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This story is pretty much pure urban legend. Once upon a time, an unsuspecting man buys a new car. He drives it as normal but begins to notice something strange happening: no matter how much he drives, the car never seems to need more gas. In fact, he eventually realizes that the car has gone 200 miles on a single tank.

In some versions of the story, he takes it back to the dealer who "fixes it" (i.e. removes this magical super carburetor) and returns the car. In other versions, the dealer recalls the car and gives the man a replacement. In still other versions, the man goes outside just in time to see mysterious figures running away with his car's carburetor. Whichever version of the tale you prefer, the Miracle Carburetor is probably off living somewhere with Bigfoot and the Loch Ness Monster.

Related: 2021 Chevrolet Tahoe 3.0L Duramax Features Best-In-Class Gas Mileage

9 Legit: Lose Weight

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Did you know that for every extra 100 lbs your car totes around, your vehicle will use 1-2% more fuel? Well, now you do. But before you toss your kids out, let's look at a few other ways to help your vehicle run lean and mean. For starters, take out everything you don't need. Those bags of cat litter you've been toting around? The golf clubs you left in there from last weekend? It's all gotta go. Now, if you're really up for a challenge, you can take things even further.

Gas weighs 8 lbs per gallon, so depending on how big your tank is, only filling it halfway could easily save you 50 lbs or more. If you rarely have passengers, why do you need a back seat? Get rid of it—as if you needed another excuse not to drive your mother-in-law around.

(Video) 1 Tank vs 10 Cars!

8 Crazy: Acetone

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Acetone (a colorless, flammable liquid) has a lot of uses, typically in medicine, in chemistry, and at home as a solvent for removing things like paint and nail polish. But according to the internet, you can also add it to gasoline (500:1 gas to acetone ratio) to slow the combustion of your fuel and increase your MPG by 25-30%.

Actually, here's a spoiler: anything that says it can improve your gas mileage by huge amounts is usually complete crap. But because we like scientific proof, the MythBusters tackled this theory in their episode titled "Exploding Trousers." Shockingly, their findings showed that adding acetone slightly reduces your MPG (probably because cars aren't actually made to run on paint remover). For the record, they also tested fuel magnets and a miracle carburetor and found both to be completely worthless.

7 Legit: Kammback/ Boat Tail

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The most aerodynamically efficient shape at subsonic speeds is one with a rounded front and sharply tapered tail (think of a cross-cut of an airplane wing). But if you look at any car on the road, you'll notice that no vehicles have that shape. Are we all missing out on potential MPG savings just because our cars are the wrong shape?

Well, if you're really determined to squeeze every mile possible from your fuel tank, there's a way to fix that. You can mod your car into a Kammback, which is a design with a square back end (rather like a hatchback), or you can go all the way into a full boat tail. EcoModder tested the design and found an approximate 15% improvement in fuel efficiency. You'll just have to get used to explaining that to all the people who ask what the heck you did to your car.

6 Crazy: High-Performance Spark Plugs

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Contrary to what its name would have you think, spark plugs don't actually create any sparks. Instead, they provide a space for the electricity generated by the ignition coil to travel via the electrodes sticking out of one end. Spark plugs are crucial to the operation of your engine, and from time to time, they must be replaced when they wear out or get corroded.

The main advantage of high-performance spark plugs is that they conduct this current more efficiently, which means they last longer and don't need to be replaced as often. But that's where the helpfulness ends. Spark plugs, good or bad, won't affect the performance of your engine itself. They either work, or they don't. So, go ahead and invest in the high-performance ones if you hate changing the things, but otherwise, it's a hard pass.

5 Legit: Diesel To WVO

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Thanks to our love of fried foods, there's no shortage of WVO (waste vegetable oil) just sitting around in need of recycling. So, why the heck aren't we all driving with it? If you have a diesel vehicle, you can simply pour WVO (after you strain it, of course) into your tank, and go, but because it's more viscous (a.k.a. thicker) than diesel fuel, it'll damage your engine over time.

The best thing to do is to get a professional conversion that consists of a two-tank system: one to store diesel, which is needed just for starting your car, and the other to heat oil and send it to the engine. Are you going to get more MPG than you would with regular fuel? Probably not, but you'll be saving money and helping the environment, so we're counting that as a win on all fronts.

4 Crazy: Engine Ionizer

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(Video) This Stupid Thing Will Save You Thousands in Car Repairs

What would you say to a mod that can eliminate your emissions, clean your engine, and save you huge amounts on your gas bill? I'd say it's too good to be true. And when it comes to engine ionizers, that's exactly the case. These devices purport to use electrostatic energy to rearrange the electrons in the fuel molecules so that they take on a negative charge.

The theory goes that the molecules will then repel each other (meaning, they'll have more air between them), which supposedly improves the efficiency with which the fuel burns. I hate to break it to you, but this is a lot of pseudosciences. When Popular Mechanicstested one such device, they got a 15 bhp reduction. Then, they had to end the test when the ionizer caught fire. And I'm pretty sure you can't save fuel when your car is on fire.


What mods help save gas? ›

What Modifications Can You Make to Improve MPG?
  • Fuel Economy Monitor. If you don't know what your fuel consumption and MPG is, how on earth can you make any changes? ...
  • Eco-Friendly Tyres. ...
  • Synthetic Oils. ...
  • Aerodynamic Body Mods. ...
  • Weight Saving Parts. ...
  • Go Automatic. ...
  • ECU Tune/Remap.
Jul 20, 2022

What cheap mods make a car faster? ›

Top 10 Value For Money Car Mods
  1. Air Filters. The cheapest way to add some power to your car is generally to fit a performance air filter. ...
  2. Lowering Springs. ...
  3. Wheels. ...
  4. Tyres. ...
  5. Software. ...
  6. Intercoolers. ...
  7. Exhausts. ...
  8. Coilovers.
Jul 26, 2022

What is the fuel saving trick? ›

Empty your trunk -- Driving around with your trunk full adds weight and reduces your fuel mileage. Travel light, each 50 lbs of added weight results in a 1% reduction in fuel economy. Keep your vehicle clean -- Dirt, mud, and bugs on the exterior of you vehicle creates drag that over long distances hurts your MPG.

Is modding a car a waste of money? ›

Don't bother wasting your time and money on auto modifications that won't improve your vehicle's performance or look. This includes under-body lights, stick-on decals, and similar items. Not only will these mods be a waste of money, but they could also end up damaging your car if they're not installed correctly.

What can I add to bad fuel? ›

Since the biggest problem with this is the deposits that will form in your injectors, the solution is to ramp up the detergency in your fuel by adding a detergent-based fuel additive. A good detergent will help remove deposits as they form, keeping your injectors cleaner as you burn through this old fuel.

How can I not waste gas so fast? ›

Techniques for Drivers to Conserve Fuel
  1. Slow Down and Drive Conservatively. Speeding increases fuel consumption and decreases fuel economy as a result of tire rolling resistance and air resistance. ...
  2. Combine Trips. ...
  3. Reduce Vehicle Load. ...
  4. Get Direct Feedback.

What saves the most fuel? ›

Adopt these 5 fuel-efficient driving techniques to lower your vehicle's fuel consumption and carbon dioxide emissions by as much as 25%.
  1. Accelerate gently. The harder you accelerate the more fuel you use. ...
  2. Maintain a steady speed. ...
  3. Anticipate traffic. ...
  4. Avoid high speeds. ...
  5. Coast to decelerate.
Dec 7, 2021

Does cruise control save gas? ›

Generally speaking, yes. Cruise control can help you become more fuel-efficient and can help you save an average of 7-14% on gas thanks to its ability to maintain a continuous speed. In comparison, the constant change in acceleration and deceleration of the driver placing their foot over the pedals can eat more gas.

What makes gas last longer? ›

Slow down and drive the speed limit. On the highway, aerodynamic drag causes fuel economy to drop off significantly as speeds increase above 50 mph. Avoid “jackrabbit” starts and hard acceleration. These actions greatly increase fuel consumption.

What is the most illegal car mod? ›

Mufflers and Exhaust

Also one of the most illegal car mods in California laws on car modifications. There are muffler rules in California. The quantity of sound that the vehicle makes cannot be increased or amplified beyond what is produced by factory equipment through the use of aftermarket exhaust systems.

What is the most reliable car to mod? ›

The best cars to modify
  • Toyota Supra.
  • Ford Fiesta ST.
  • Mazda MX-5.
  • Ford Mustang.
  • Volkswagen Golf.
  • Toyota GT86/ Subaru BRZ.
  • Jeep Wrangler.
  • Volkswagen Beetle.

In what order should I mod my car? ›

That's why we're going to tell you what we think are the best first mods to do to your car!
  • Coilovers. First and foremost, we feel that coilovers are definitely one of the best first mods you can do to your car. ...
  • Wheels. Wow, this one probably comes as a surprise from a wheel company. ...
  • Tires. ...
  • Exhaust. ...
  • Aero.
Feb 17, 2020

How to get cheap horsepower? ›

(Relatively) Cheap Ways To Increase Horsepower
  1. Upgrade the Air Intake. Many gearheads start here. ...
  2. Upgrade the Exhaust. More air entering the engine means more air has to exit the engine. ...
  3. Install A Performance Tuner. ...
  4. Install a Boost Controller. ...
  5. Clean the Fuel System.
Jul 7, 2022

What cancels out gasoline? ›

Citric acid is a great alternative to baking soda and vinegar for breaking up those stinky gasoline compounds.

How long can gas sit in a car? ›

How long can gas sit in a car? Gasoline can last between three months and three years depending on the type of gas and if it is properly stored. It's important to note while all gas will naturally begin to degrade over time thanks to exposure to oxygen (also known as oxidation), all gas is not created equal.

How long will gas last in a tank? ›

Regular gasoline has a shelf life of three to six months, while diesel can last up to a year before it begins to degrade. On the other hand, organic-based Ethanol can lose its combustibility in just one to three months due to oxidation and evaporation. Tracking the age of the fuel in your tank can be a challenge.

Does running the AC use more gas? ›

As a general answer, a Consumer Reports study found that, yes, running the AC does reduce gas mileage. Here are some tips to help you balance your fuel consumption with comfort.

Does turning off AC save gas? ›

Does Turning Off the AC Save Gas? If you turn off your AC and roll your windows down on Burlington highways, it actually uses up more gas than if you kept your AC on. This is because the drag that is produced by rolled-down windows forces your engine to work harder to get you where you're going!

Does AC use gas? ›

Yes: The alternator, which is powered by the engine, is what provides energy to the air conditioner. The engine runs on fuel, meaning you are using up gas when you run the AC.

What car gets 70 MPG? ›

The Trident Iceni Grand Tourer is purported to offer top-of-the-line performance and amazing fuel efficiency.

What speed gets the best gas mileage? ›

7. The Energy Saving Trust says that the most efficient speed you can travel in a car in terms of achieving the best fuel economy is 55-65mph. Any faster, though, and the fuel efficiency decreases rapidly. For example, driving at 85mph uses 40% more fuel than at 70mph (oh, and it's illegal too).

What is the longest lasting fuel? ›

Which fuels have the longest shelf life? Propane, alcohol, wood, and charcoal are examples of good emergency storage fuels that can be stored indefinitely and still remain viable.

Does speeding use more gas? ›

While each vehicle reaches its optimal fuel economy at a different speed (or range of speeds), gas mileage usually decreases rapidly at speeds above 50 mph. You can assume that each 5 mph you drive over 50 mph is like paying an additional $0.23 per gallon for gas. Observing the speed limit is also safer.

Which 5 items can have a positive effect on a vehicle's fuel economy? ›

Drive the speed limit, remove excess weight from the car, keep the engine in good working condition, combine errands, use cruise control and keep from extreme driving habits like jack-rabbit starts. Saving money on gas is like getting into shape.

Do properly inflated tires help increase gas mileage? ›

You can improve your gas mileage by 0.6% on average—up to 3% in some cases—by keeping your tires inflated to the proper pressure. Under-inflated tires can lower gas mileage by about 0.2% for every 1 psi drop in the average pressure of all tires. Properly inflated tires are safer and last longer.

Can a full tank last a month? ›

For some cars, a full tank can last as long as a week or two depending on how much you drive your car. Remember, if you fill up with a full tank a day before a price rollback, you'll be rolling around with fuel that's more expensive than what it could have been if you just waited a day.

Do spark plugs affect fuel economy? ›

If spark plugs are misfiring or performing poorly, your gas mileage will be affected. Spark plugs are responsible for sparking engine combustion. They can't do that if they aren't working efficiently. Bad oxygen sensors and air filters can reduce gas mileage by as much as 20%!

Will changing spark plugs improve gas mileage? ›

Increased Fuel Economy – Misfiring spark plugs can reduce fuel efficiency by as much as 30%. New plugs that are replaced at regular intervals maximize fuel economy, saving you money. Smooth, Dynamic Starts – Convulsing starts will be a thing of the past when new spark plugs are installed in your vehicle.

What is the fastest modded car? ›

The modified car hit a top speed of 304.7 mph. To celebrate the event, Bugatti built a production model based on the prototype called the Chiron Super Sport 300+. This car is limited to 30 examples, enough to validate the speed record with the Guinness World Records.

What car can be hacked? ›

Impacted car models include Acura, BMW, Ferrari, Ford, Genesis, Honda, Hyundai, Infiniti, Jaguar, Kia, Land Rover, Mercedes-Benz, Nissan, Porsche, Rolls Royce, and Toyota. The vulnerabilities were identified over the course of 2022. Car manufacturers were informed about the security holes and they released patches.

Are turbochargers illegal? ›

Many turbos are not approved under California's Vehicle Code Section 27156 and can land you in trouble with the law since turbos are one of the illegal car modifications in Los Angeles, California. Luckily, there are many exceptions to the rule.

What brings value to your car? ›

Show Documentation of Your Car's Good Condition

Every time you change your oil, check fluids, change brakes or replace tires, you should keep your receipts. Having proof of a properly maintained car will give you plenty of bargaining power to receive the price you deserve for it.

What mods make your car faster? ›

The Best Ways To Make Your Car Go Faster
  • Upgrade Your Spark Plugs. ...
  • Get New Electric Fans. ...
  • Look At Your Exhaust System. ...
  • Reduce Your Car's Weight. ...
  • Order A New Exhaust Header. ...
  • Install A Larger Diameter Throttle Body.

What makes a car value go up? ›

A cleaned and detailed car is worth more at trade-in than a worn and poorly maintained one. You might consider detailing your vehicle and making any minor car repairs. Fixing issues like windshield damage or minor engine issues, and cleaning it before an appraisal by the dealer can net hundreds more on the trade-in.

What is the easiest car to turbo? ›

These Cheap Naturally-Aspirated Cars Are Perfect To Modify With A Turbo
  • 8 Chevrolet Colorado/GMC Canyon.
  • 7 Mazda Miata.
  • 6 Nissan 350Z.
  • 5 Subaru Crosstrek.
  • 4 Subaru BRZ/ Toyota GR86.
  • 3 Jeep Compass.
  • 2 Honda Civic 7th Generation.
  • 1 Ford Mustang GT.
Mar 1, 2022

What car had the best engine? ›

The Best Car Engines of All Time
  • 1) Small-Block V8: Chevrolet. The iconic American V8 engine has been sold in more than 100 million vehicles. ...
  • 2) Flat 4: Volkswagen. ...
  • 3) Model T Engine: Ford. ...
  • 4) Fuhrmann Engine: Porsche. ...
  • 5) B-Series: Honda. ...
  • 6) XK6: Jaguar. ...
  • 8) 22R/R-E: Toyota. ...
  • 9) S70/2: BMW.
Sep 21, 2020

Is there any mods to improve fuel economy? ›

Fuel magnets claim to increase the efficiency of your vehicle by breaking up fuel molecule clusters into smaller, more combustible fragments. Simply place the magnets around your fuel line about two inches from the engine, so they say, and you'll instantly see a 24% improvement in MPG.

What saves the most gas? ›

Pressing the accelerator pedal gently will help you save gas. Following this rule of thumb allows for more efficient driving. Aim to take about five seconds to accelerate your vehicle up to 15 miles per hour from a stop. For a manual transmission, use a moderate throttle position and shift between 2000 and 2500 rpm.

Does Eco mode really save gas? ›

Eco mode puts less strain on a car's engine, resulting in several benefits such as: Improved fuel economy: While the change in fuel economy isn't drastic, your car will use less gas and get more miles per gallon when you use eco mode correctly.

Do fuel saving devices work? ›

The answer, all too often, is no. Many so-called fuel-saving devices are simply well-packaged hoaxes that base their claims on questionable science and offer little or no change in a vehicle's performance. In some cases, these devices can actually hurt mileage and cause engine damage.

Do fuel magnets work? ›

Magnets attached to a vehicle's fuel line have been claimed to improve fuel economy by aligning fuel molecules, but because motor fuels are non-polar, no such alignment or other magnetic effect on the fuel is possible. When tested, typical magnet devices have shown no effect on vehicle performance or economy.

Do bed covers save gas? ›

Tonneau covers help reduce wind resistance, and the less wind resistance your truck has, the better your miles-per-gallon will be. In fact, some tests have shown that a tonneau cover can improve fuel economy by as much as 10%. The type of tonneau cover you choose will have an impact on your savings.

What wastes the most fuel? ›

Speeding. Speeding shouldn't come as a surprise as one of the top ways to waste gas. When you speed, you force your car to operate at a higher level that requires more gas and the more you speed, the more gas you'll use. For the best MPG performance, our fleet fuel card company suggests driving at a speed of 55-60 mph.

Is Eco mod legit? ›

Bottom Line. Eco mode is not a magic button that will instantly save fuel. Its true value rests in its ability to encourage frugal driving behavior that can make a difference. We have seen in other tests that driving smoothly can make a 2 to 3 mpg improvement around town, compared with an erratic driving style.

What is city mode in car? ›

By pushing the CITY button, usually found on the steering wheel, the power assistance is increased for steering at low speeds. This makes the steering lighter, lessening the effort required to turn the steering wheel.

What should I turn off to save gas? ›

How to save energy
  1. Turn off standby appliances.
  2. Install a smart thermostat.
  3. Turn down your thermostat.
  4. Buy efficient appliances.
  5. Install a new boiler.
  6. Wash clothes at a lower temperature.
  7. Be smarter about water.
  8. Invest in double glazing.
Aug 12, 2022

How do you double gas mileage? ›

Drive More Efficiently
  1. Go Easy on the Pedal. Speeding, braking, and rapid acceleration waste gas. ...
  2. Slow Down. Gas mileage efficiency tends to decrease above 50 miles per hour. ...
  3. Leave Extras at Home. ...
  4. Use Cruise Control (When Appropriate) ...
  5. Turn off the Car. ...
  6. Check Tire Pressure. ...
  7. Replace Spark Plugs. ...
  8. Check the Alignment.


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