What are the best fuel economy boosters?
This guide shares real user experiences with better mileage and smoother engine performance from these top boosters.
Cars use a lot of gas. Fuel additives can help save money. They make engines run smoother and last longer.
Many users see big savings with these products. Real drivers report better mileage after use.
Your car deserves the best care. This guide picks the top boosters. Read on to boost your drive.
List of Top 10 Fuel Economy Boosters
| Image | Title | Best For | Price |
|---|---|---|---|
 |
STP Octane Booster, Fuel Intake System Cleaner, Bottles, 5.25 Fl Oz, Pack of 12 |
This octane booster is perfect for car owners who want smoother rides and more power from their gasoline engines. It’s also great for anyone fighting engine knocks or seeking better fuel economy. |
|
 |
Gumout 510233 Supreme 2 in 1 Fuel Injector Cleaner + Octane Booster, 10 Oz. Improves Engine Power & Performance & Prevents Deposit Build Up, Treats 30 Gallons |
This product is perfect for car owners who want to boost engine power and improve fuel economy. It’s ideal for drivers seeking smoother rides with less knocking and cleaner fuel systems. |
|
 |
Lubegard 77012 Fuel System Booster Cleaner – 16 oz. |
This fuel system booster is perfect for car or truck owners who want to dissolve carbon buildup, remove deposits, and smooth out engine performance. It’s ideal for drivers dealing with hesitation, rough idle, or stalling, and those looking to save money with lower octane fuel while gaining better fuel economy and more horsepower. |
|
 |
Bardahl Octane Booster 3530 – Professional Octane Booster for Gasoline Engines – Enhance Performance, Fuel Economy, & Power – Gas Additives Treatment for Car |
This product is perfect for car owners who want to boost their engine’s power and save on gas. It’s great for drivers tired of dirty fuel systems hurting their ride. |
|
 |
GasBooster | Advanced Fuel Additive | Save Gas | Reduce CO2 Emission | Treats Gasoline and Diesel Engines | (Pack of 5 GB Bottles, Totaling 6.5 Oz) |
GasBooster is perfect for car owners and truck drivers who want to save gas, cut emissions, and make their engines run cleaner and stronger. It’s also great for people with boats, farm tools, or any machines that need more power and less fuel use. |
|
 |
Hot Shot’s Secret Gasoline Extreme 12 Oz, Concentrated Fuel System Cleaner, Fuel Additive for Gasoline Engines, Fuel Injector Cleaner – Increases Fuel Economy & Restores Engine Performance |
This fuel additive is perfect for car owners with gasoline engines who want to boost fuel economy and fix rough running. It’s great for anyone looking to clean fuel injectors, restore engine power, and enjoy smoother driving. |
|
 |
PROGREEN Ultra Sport Multifunctional Fuel Additive/Catalyst/Stabiliser/Energy Booster Shot/Feel Your Drive/2.7 Oz. Cans (1) |
This fuel booster is perfect for drivers who want to fix common car problems like hard starts and rough idling. It’s also ideal for anyone looking to boost engine power and cut down on gas use while keeping your fuel fresh longer. |
|
 |
Hot Shot’s Secret Diesel Winter Anti-Gel Fuel Treatment 16oz Squeeze 5 Pack, 7 in 1 Fuel Booster Winter Protection, Diesel Additive Prevents Gelling, Improves Cold Starts (5 Pack), Packaging May Vary |
This fuel treatment is perfect for truck drivers and farmers who use diesel vehicles in cold areas. It helps prevent fuel gelling and improve starts when temperatures drop low. |
|
 |
Lucas Cetane Power Booster Diesel Fuel Additive (16 oz) – 12 Pack |
This Lucas Cetane Power Booster is perfect for diesel vehicle owners who want longer filter life, more fuel efficiency, and quick starts in cold weather. It’s also ideal for those needing to maintain peak performance with its keep-clean diesel fuel detergent. |
|
 |
Gas Saver, Fuel Sync – Drive Farther, 2026 New Upgrade Portable Car Fuel Saver, Automotive Spill Saver, Plug and Play Energy Economy Gas Saver, For Truck, Car (2PCS) |
This fuel saver is perfect for drivers who want to save money on gas and make their cars run better. It’s also great for truck owners looking for an easy way to boost performance and reduce waste. |
Detailed Reviews
Find the Best Fuel Economy Boosters with confidence from our expert-tested, customer-backed guide. Each pick is chosen for real-world performance, value, and ease of use. Read on to discover the perfect booster to save fuel and improve engine life. Let our clear, trusted reviews make your choice simple.
1. STP Octane Booster, Fuel Intake System Cleaner, Bottles, 5.25 Fl Oz, Pack of 12
STP Octane Booster is a 2-in-1 fuel additive that raises octane levels and cleans the fuel intake system. It uses MMT and synthetic technology to restore lost power and acceleration. One bottle treats up to 15 gallons of gasoline.
This additive works with all gasoline engines, including cap-less systems. Add it to your tank with every fill-up for best results.
It reduces knocking and pinging from deposits. It improves fuel flow for smoother acceleration and more horsepower. Plus, it helps boost MPG by optimizing fuel use.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This octane booster is perfect for car owners who want smoother rides and more power from their gasoline engines. It’s also great for anyone fighting engine knocks or seeking better fuel economy.
Ready to Purchase?
2. Gumout 510233 Supreme 2 in 1 Fuel Injector Cleaner + Octane Booster, 10 Oz. Improves Engine Power & Performance & Prevents Deposit Build Up, Treats 30 Gallons
Unleash your engine’s full potential with Gumout 510233 Supreme 2 in 1 Fuel Injector Cleaner + Octane Booster. This product is designed to make your car run better.
It cleans and boosts at the same time. The cleaner works for 30 gallons of fuel. It is safe for your car.
Enjoy better fuel and more power. Your engine will run smoother than before. It is easy to use with every fill-up.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This product is perfect for car owners who want to boost engine power and improve fuel economy. It’s ideal for drivers seeking smoother rides with less knocking and cleaner fuel systems.
Ready to Purchase?
3. Lubegard 77012 Fuel System Booster Cleaner – 16 oz.
This fuel system booster cleaner keeps your engine clean and running great. It works in both gasoline and diesel engines.
It uses special detergent to break up carbon build-up. This helps remove deposits from the engine. The cleaner also lubricates and protects fuel pumps.
Fuel stays stable and does not get corroded. It can cut down on engine problems like stalling. You get better fuel economy and more horsepower.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This fuel system booster is perfect for car or truck owners who want to dissolve carbon buildup, remove deposits, and smooth out engine performance. It’s ideal for drivers dealing with hesitation, rough idle, or stalling, and those looking to save money with lower octane fuel while gaining better fuel economy and more horsepower.
Ready to Purchase?
4. Bardahl Octane Booster 3530 – Professional Octane Booster for Gasoline Engines – Enhance Performance, Fuel Economy, & Power – Gas Additives Treatment for Car
Give your car a boost with Bardahl Octane Booster! This product cleans your engine. It also improves fuel economy.
This octane booster is safe for your engine. It helps your car run better and save you money.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This product is perfect for car owners who want to boost their engine’s power and save on gas. It’s great for drivers tired of dirty fuel systems hurting their ride.
Ready to Purchase?
5. GasBooster | Advanced Fuel Additive | Save Gas | Reduce CO2 Emission | Treats Gasoline and Diesel Engines | (Pack of 5 GB Bottles, Totaling 6.5 Oz)
GasBooster is an advanced fuel additive that makes engines run better with gasoline or diesel. It helps save gas and cut down on CO2 emissions by cleaning fuel systems.
This nano-technology product removes carbon and sludge to boost power and efficiency. It works for cars, trucks, and even boats or lawn mowers.
Each of the five bottles treats up to 42 gallons for top performance.
| Pros | Cons |
|---|---|
|
|
Perfect For:
GasBooster is perfect for car owners and truck drivers who want to save gas, cut emissions, and make their engines run cleaner and stronger. It’s also great for people with boats, farm tools, or any machines that need more power and less fuel use.
Ready to Purchase?
6. Hot Shot’s Secret Gasoline Extreme 12 Oz, Concentrated Fuel System Cleaner, Fuel Additive for Gasoline Engines, Fuel Injector Cleaner – Increases Fuel Economy & Restores Engine Performance
Is your car running rough? Does it need more power? Hot Shot’s Secret Gasoline Extreme is here to help.
This great additive cleans your entire fuel system. It also boosts your fuel economy. Get ready for a smoother, more efficient ride.
It’s easy to use. Get yours today!
| Pros | Cons |
|---|---|
|
|
Perfect For:
This fuel additive is perfect for car owners with gasoline engines who want to boost fuel economy and fix rough running. It’s great for anyone looking to clean fuel injectors, restore engine power, and enjoy smoother driving.
Ready to Purchase?
7. PROGREEN Ultra Sport Multifunctional Fuel Additive/Catalyst/Stabiliser/Energy Booster Shot/Feel Your Drive/2.7 Oz. Cans (1)
Say goodbye to engine woes with PROGREEN Ultra Sport. This fuel additive fixes starting problems and stalling right away. Take your drive to the next level with quick throttle response.
It boosts horsepower and torque fast. It also cuts fuel use and lowers emissions.
Feel the power every time you drive. PROGREEN Ultra Sport keeps fuel fresh for 12 months. Grab a can now to drive better today.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This fuel booster is perfect for drivers who want to fix common car problems like hard starts and rough idling. It’s also ideal for anyone looking to boost engine power and cut down on gas use while keeping your fuel fresh longer.
Ready to Purchase?
8. Hot Shot’s Secret Diesel Winter Anti-Gel Fuel Treatment 16oz Squeeze 5 Pack, 7 in 1 Fuel Booster Winter Protection, Diesel Additive Prevents Gelling, Improves Cold Starts (5 Pack), Packaging May Vary
Hot Shot’s Secret stops diesel fuel from gelling in cold weather. It shrinks wax crystals so fuel flows even when it’s very chilly. This keeps your engine ready to start.
It boosts cold starts and lifts cetane levels up to 7 points. It also cleans fuel injectors to remove dirt and improve engine life.
The treatment breaks up water in fuel to stop rust and ice. It works down to -65°F when you add 4 ounces per 31 gallons.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This fuel treatment is perfect for truck drivers and farmers who use diesel vehicles in cold areas. It helps prevent fuel gelling and improve starts when temperatures drop low.
Ready to Purchase?
9. Lucas Cetane Power Booster Diesel Fuel Additive (16 oz) – 12 Pack
Give your diesel engine a boost with Lucas Cetane Power Booster. This fuel additive comes in a 16 oz bottle. You get a 12-pack for the best value.
This power booster helps your engine start fast. It also gives you more fuel efficiency.
Enjoy a longer filter life. Your engine will maintain peak performance.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This Lucas Cetane Power Booster is perfect for diesel vehicle owners who want longer filter life, more fuel efficiency, and quick starts in cold weather. It’s also ideal for those needing to maintain peak performance with its keep-clean diesel fuel detergent.
Ready to Purchase?
10. Gas Saver, Fuel Sync – Drive Farther, 2026 New Upgrade Portable Car Fuel Saver, Automotive Spill Saver, Plug and Play Energy Economy Gas Saver, For Truck, Car (2PCS)
This fuel saver boosts your car’s power and speed. It makes starts smoother and drives better. Your car runs more efficiently with less gas.
It connects to the cigarette lighter easily. It cuts down on fuel use right away.
The device is small and lasts long. It fits in any space. Trips become greener with less waste.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This fuel saver is perfect for drivers who want to save money on gas and make their cars run better. It’s also great for truck owners looking for an easy way to boost performance and reduce waste.
Ready to Purchase?
Buying Guide
Fuel additives can lower gas costs and make driving smoother. Many drivers rely on these to extend engine life.
Drivers love how these boosters work. One user said a gasoline cleaner cut their tank fills in half. Another shared that their diesel truck started faster in cold weather after using an additive. These stories show real gains in miles per gallon.
- Engine Type: Check if the additive works for gasoline or diesel engines. Match it to your car’s fuel type for best results. This ensures safe and effective use.
- Fuel Economy Boost: Look for products that promise better miles per gallon. Read reviews to see proven savings. Choose ones with MPG claims backed by users.
- Octane Boosting: Some additives raise octane to stop engine knock. They help with performance in older cars. Pick if you drive high-performance vehicles.
- Cleaning Power: Opt for ones that clean fuel injectors and systems. This removes build-up for smoother runs. It prevents long-term engine issues.
- Treatment Volume: Consider how many gallons one bottle covers. More coverage means less frequent buys. Balances cost and convenience.
- Ease of Use: Choose simple add-it-to-tank products. Avoid hard-to-use types for daily drives. Look for every fill-up options.
- Safety Features: Ensure additives work with cap-less fuel systems. Check for no harm to engines. Safe for all car types.
- Fuel Stability: Pick stabilizers for stored fuel. They stop corrosion in off-season. Good for boats or mowers too.
- Price and Value: Compare pack sizes for savings. Get value with proven boosts. Bulk packs offer more economy.