AS SEEN ON SHARK TANK
Fuel Saver
50% OFF Today Only
Works in any car after 1996
Installs in 60 seconds
180-day money-back guarantee
Free shipping
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Based on 11,239 reviews
Why Mark Cuban Invested $10 Million in This Device That Cuts Fuel Costs by Over 40%
(And How You Can Get One for Yourself)
ET, Wednesday, March 11, 2026 — It was the most-watched episode in Shark Tank history when James Peyton from Utah won every single Shark over.
Never before has a Shark decided to invest $10 million dollars into a company on Shark Tank.
Touting his business as “the greatest step forward in the oil & gas industry”, Mark Cuban was quick to offer up his hard-earned cash to back up the engineer from Texas.
James Peyton, an ex-engineer for one of America’s biggest car companies, brought his experience to help find a real solution against the rising fuel costs at the pump.
The answer he found?
A tiny device that you plug into your 12 volt cigarette lighter, and within 60 seconds it starts saving you money automatically.
It’s going viral on social media right now with thousands of people making videos that it saved them $100, $200 and even $400 a month in fuel costs.
Here’s how it works…
He was one of the first contestants in Shark Tank history to receive a standing ovation from all five Sharks.
“I’ve spent millions fighting the corrupt health insurance industry with my company Cost Plus Drugs. Now here’s someone doing the exact same thing against the corrupt oil & gas industry. This is the fight America needs, and I’m all in. That is why I decided to invest $10 million.”
— Mark Cuban, Shark Tank investor
1. It Eliminates “Hidden Components Secretly Installed in Every Vehicle” That Are Stealing Your Gas Money
Fuel Saver uses advanced electromagnetic technology that overrides hidden components secretly installed in every vehicle built after 2001, components the oil industry has every incentive to keep hidden.
Components that deliberately waste 40% of the gas you pay for as fumes.
So you have to keep filling up.
Fuel Saver stops that waste completely, so every drop of gas you pay for actually moves your car forward instead of going straight out the exhaust as fumes.
It’s 100% legal, completely plug and play.
And people are driving for weeks on a single tank, no matter what vehicle they own.
2. It Works on Any Vehicle Made After 1996 (No Tools, No Wiring, No Mechanic)
Unlike expensive tune-ups or fuel system cleanings that require appointment scheduling and mechanic expertise, this device installs quickly.
Just plug it into your 12V socket and drive.
It works universally across cars, trucks, SUVs, and even heavy-duty vehicles, because every modern vehicle shares the same 12V electrical architecture.
3. It Pays for Itself in 2–3 Fill-Ups (Then Pure Savings Forever)
At current gas prices, most drivers save a noticeable amount per tank.
Since the device costs very little, it literally pays for itself within your first 2–3 fill-ups.
After that, every dollar saved goes back in your pocket.
Compare that to fuel additives that cost more per bottle and need constant repurchasing, or mechanic tune-ups that can cost significantly more and only last a few months.
4. It Stabilizes RPM and Boosts Engine Power Instantly
Beyond fuel savings, drivers notice immediate performance improvements.
The stabilized electrical current allows your engine’s computer to calculate perfect fuel injection timing, resulting in smoother acceleration, faster starts, and more responsive braking.
Your car will feel like it did when it was newer — because the electrical system is finally getting the clean, stable power it was designed for.
5. It Cuts Your Monthly Fuel Costs by Half
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Fuel Saver sends electromagnetic waves at exactly 847.3 nanometers that override the magnetic disruptors in your car and make your engine burn 100% of your fuel instead of 60%.
Causing you to save over 40% a month in fuel costs.
No more spending $200, $300, $400 a month just to get to work and back.
No more choosing between filling your tank and paying your bills.
No more planning your week around how much gas you can afford.
8 Comments
Has anyone tried this? I’m tired of watching my gas tank drain every week and feeling like I’m burning money with every mile.
Game changer! Used it on my road trip to Florida last month and my engine felt completely different. Better mileage and smoother performance! Worth every penny!
Finally stopped wasting money on fuel additives! Been using this device for 3 months and can’t believe how much I’m saving at the pump now 😍
I was skeptical about a plug-in device helping with gas mileage but decided to try because of the guarantee. After using it for 2 weeks my wife actually asked what was different — normally I’m complaining about gas prices every time we fill up! 🙌
@Jennifer check this out instead of that expensive tune-up you were talking about
Already ordered! So much more affordable than a mechanic visit and I can use it in every car
Does it take up a lot of space in the car? I’m already struggling with clutter in my center console.
Not at all! It’s basically the size of a phone charger. Just sits in your 12V socket and you forget it’s even there.
Update after 6 months: AMAZING! Used it through 15+ tanks of gas and every single one has been more efficient. Best automotive investment I’ve ever made 🙌
Ordered the 3-pack because they keep selling out. So glad I did — giving one to my husband for his work truck!
Smart move! I forgot to transfer mine during my last road trip and had to suffer through terrible mileage the whole way. Definitely getting extras this time