GasGuard™ - Save Up To 40% On Gas
⚡ Limited Time: Save 38% On GasGuard™ — While Supplies Last
Red pickup truck showing 16 MPG without GasGuard to 22 MPG with GasGuard
★ Trusted By 33,000+ Drivers

Stop Burning Money At The Pump™

GasGuard plugs into your OBD2 port and optimizes your engine's fuel efficiency. No mechanic. No tools. Just real savings on every tank.

MSRP $64.98Now Only $39.98
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Mike Dawson
“Gas prices used to eat me alive before. My truck went from 14mpg to 25mpg! Can't recommend GasGuard enough.”
Mike Dawson ★★★★★
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Fast & Free Shipping
3–5 Business Days
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90-Day Money Back
No Questions Asked
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33,000+ Happy Drivers
And Counting
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Secure Checkout
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The Science

How GasGuard Works

Advanced ECU optimization technology. Plug in. Drive. Save.

Connects To Your OBD2 Port
Every vehicle made after 1996 has a standard OBD2 port under the steering column. Plugs right in.
Reads & Optimizes ECU
Analyzes fuel injection, air-fuel ratios, and throttle response. Applies optimized parameters.
Delivers Real Results
Most drivers see improved fuel economy within 150 miles. Learns your driving habits over time.
Easy Setup

3 Steps. That's It.

No mechanic. No tools. Just plug in and drive.

1
📱
Order Online
Takes 60 seconds. Tracking number within 24 hours.
2
📦
Receive & Install
Arrives in 3–5 days. Plug into your OBD2 port in seconds.
3
💰
Save Money
Watch your gas mileage climb. Results within 150 miles.
Built Tough

Why 33,000+ Drivers Trust GasGuard

ECU tuning tech in a device smaller than your key fob.

⛽

Cut Fuel Costs Up To 40%

Optimizes your ECU for more miles per gallon. Saves thousands per year.

⚙

ECU Performance Boost

Reprograms fuel mapping. Boosts efficiency up to 35%.

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20-Second Install

Plug it in under the dash. No tools. No mechanic. Done.

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Small & Tough

Compact and rugged. Hides under your dash out of sight.

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Cars, Trucks & SUVs

Fits all makes and models 1996+. If it has OBD2, it works.

CO₂ ↓

Less Emissions

Less fuel burned = fewer carbon emissions. Good for your wallet and the air.

Real Talk

What Drivers Are Saying

500+ verified five-star reviews. Real people. Real results.

Dave B.
Dave B.
Feb 7, 2023
★★★★★
Beyond Impressed!
“My 2009 Honda Accord went from 25mpg to over 37mpg. I was skeptical but this thing actually works. Very happy.”
Recommends
Chris E.
Chris E.
Aug 23, 2022
★★★★★
A Steal At This Price
“I would've paid hundreds. It really improved my truck's gas mileage, almost doubling it!!”
Recommends
Richard O.
Richard O.
Jan 19, 2023
★★★★★
Don't Know How. But It Works.
“My gas is lasting way longer. Car feels like it has more power too. Glad I took the chance.”
Recommends
Josh G.
Josh G.
Jan 2, 2023
★★★★★
Easy Money Saver
“Super easy to install. Already gained about 6 miles to the gallon.”
Recommends
Ian R.
Ian R.
Feb 10, 2023
★★★★★
Life-Saver
“Added 13 mpg to my average. Wish I'd found the sale earlier—bought 3 at full price!”
Recommends
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Got Questions?

FAQ

Everything you need to know.

How long will shipping take?
Our US warehouse delivers in 3–5 business days. Shipping is FREE.
Will this work with my vehicle?
Yes. Works with most vehicles 1996 and newer with an OBD2 port. Cars, trucks, SUVs.
Keyless ignition — does it still work?
Absolutely. OBD2 port is independent of the ignition system.
Why don't manufacturers include this?
Auto manufacturers and oil companies work together. Making cars too efficient isn't in their financial interest.
Where's the reset button?
Top flat surface, opposite the plug-in side. Two small holes—larger one on top left.
Diesel compatible?
Not yet. Diesel version is in development.
What if it doesn't work for me?
90-day money-back guarantee. Full refund. No questions. Zero risk.
Let's Go

Start Saving Today

Join 33,000+ drivers keeping more cash in their pocket.

$64.98$39.98Save 38%
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