Fuelsync Gas Saver Customer Reviews

If you’re considering purchasing our Fuelsync Gas Saver, we encourage you to take a moment to listen to what our customers have to say.

We greatly value your feedback and would love to hear your own stories and experiences after using our Fuelsync Gas Saver.

Customer reviews

4.94
Based on 200 reviews
5
94%
187
4
7%
13
3
0%
0
2
0%
0
1
0%
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With images (0) Verified (200)
All stars (200)
R Linder
Haven't had it installed real long yet but according to my calculations it seems to be giving me 3 to 4 miles per gallon more so far and that's just city driving, hoping for even more on the highway.
Helpful? 0 0
robert
It works very well in my 2022” Honda Civic.?it boosted my mpg from 28-30 to 34-36. Every little bit helps. It’s already paid for itself
Helpful? 0 0
William Roberts
It does really work. My car's mile gas range went from 423 miles to 477 miles.
Helpful? 1 0
Timothy Guinn
Saves gas
Helpful? 1 0
Duarte N. Nunes Vieira
Exelente producto desde el primer momento senti el ahorro de combustible, vale la pena el carro trabaja a menos revolución y ahorra
Helpful? 0 0
Debbie
increased my gas mileage by 2 mpg. have to drive. it a bit before see the results but is effective
Helpful? 1 0
robert jardine
Driving 20 miles all high way I gained 4 mpg driving a 2013 Chevy 4 door truck 5.3
Helpful? 1 0
Del Angelo
Nice
Helpful? 1 0
Peter Trudeau
2106 F150 5.0 getting 2. + miles more per gallon after a 500 mile trip highway and local roads Improved mileage on local roads 1.7- 2.0 miles Gal per
Helpful? 1 0
redneck1
Well worth the money I noticed a difference in the performance of my truck it runs better and gas mileage is a whole lot better.
Helpful? 2 0
craig and nan
Hello, We installed these performance chips on a freshly overhauled 1996 Chevy Corvette and a 2021_Chevy Spark. The gain,in power and torque is noticeable and gas mileage went up too. Some people said they did not work but there is a reset hole on the front of the performance chip that you use a wire or a,needle to push it in. Once its set if you remove it to work on the cars you do not have to reset them again. They have a memory and they will reconnect to your cars computer. The automatic transmission shifts quicker on both cars and they both have faster acceleration! Installation instructions are on the box!
Helpful? 1 0
Michael Freeman
After a couple of weeks using this product and one of my trucks I could tell the different thin gas gaining about 3 mi extra to the gallon in a V8 I recommend trying it
Helpful? 1 0
Patrice Jean
Great
Helpful? 0 0
KS
I bought this in February for my daughter and myself. It may not look like it's working but now that I've taken a trip 4 hours both ways my gas suddenly jumped to getting 478 miles to the tank from 360 a tank I have a Nissan sentra. You have to give it time to work. It’s also for better for people who travel. Thats when i saw the difference and it stayed. The miles per gallon keeps going up. You all give up too fast. Update: I’m placing my second order. I gave my daughter my Sentra so I’m leaving the device in it. I bought 2025 F-150 power boost hybrid (the truck is amazing fyi ) I Travel long distances. I moved to the country in Ohio from Long Island NY and I travel there a lot. Again you won’t see results until you travel a good distance on a highway or road where you drive a straight run. Without stop signs and lights every 5 seconds. Once you do this your gas will improve the device needs time to work with your vehicle. It may take a month or 2. Don’t think you’re going to plug...More
I bought this in February for my daughter and myself. It may not look like it's working but now that I've taken a trip 4 hours both ways my gas suddenly jumped to getting 478 miles to the tank from 360 a tank I have a Nissan sentra. You have to give it time to work. It’s also for better for people who travel. Thats when i saw the difference and it stayed. The miles per gallon keeps going up. You all give up too fast. Update: I’m placing my second order. I gave my daughter my Sentra so I’m leaving the device in it. I bought 2025 F-150 power boost hybrid (the truck is amazing fyi ) I Travel long distances. I moved to the country in Ohio from Long Island NY and I travel there a lot. Again you won’t see results until you travel a good distance on a highway or road where you drive a straight run. Without stop signs and lights every 5 seconds. Once you do this your gas will improve the device needs time to work with your vehicle. It may take a month or 2. Don’t think you’re going to plug it in and have instant results. It doesn’t work that way
Helpful? 1 0
Armindo Oliveira
I was skeptical at first, but after a couple of weeks using Fuelsync Gas Saver, I genuinely noticed a difference in how often I needed to refuel. My car feels smoother on acceleration, and I’m saving money every month.
Helpful? 1 0
Samed Temiz
Installation took less than a minute, and I didn’t need any tools. After a few drives, my engine felt more responsive, especially during city driving. Definitely worth trying.
Helpful? 1 0
Russell Tobiasson
I drive long distances for work, and fuel costs were adding up quickly. Since using this device, my fuel efficiency has improved noticeably. It’s a small investment with real benefits.
Helpful? 0 0
Miguel Cortez
What impressed me most is how simple it is. Plug it in and forget about it. Over time, I’ve seen better mileage and smoother engine performance.
Helpful? 0 0
Alex
My car used to feel slightly sluggish, especially in traffic. After using Fuelsync Gas Saver, acceleration feels more consistent, and I’m visiting the gas station less often.
Helpful? 0 0
Jesse H III
I bought this out of curiosity, but it exceeded my expectations. The improvement isn’t instant, but after a week, the difference became clear.
Helpful? 1 0
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Buy Fuelsync Gas Saver

Take the first step toward getting more from every tank—buy Fuelsync Gas Saver today and experience the difference on your next drive.

Sale!

Fuelsync Gas Saver (Official Retailer) 2026

Original price was: US$59.98.Current price is: US$29.75.