EcoMac Reviews

( 3 reviews )

EcoMac Review: Legit or Scam?

Reviewopedia staff  -  Updated:  December 14, 2023


The EcoMac is a purported fuel saving device that the seller claims can analyze your driving style to reduce gas consumption by up to 35%.

This device has been sold under different names including EcoMax, ECO Fuel, Eco OBD2, and Nitro OBD2.

Seller Claims

The EcoMac is claimed to analyze your driving style and send instructions to ECU (engine control unit) to allow your engine to perform at the appropriate level.

The idea being that when your engine is being used in the most efficient way possible, it uses less gas to operate.

Several companies claim to make these identical looking “highly successful” fuel economy devices that are sold under different names.

The reality is that there is no way to create a generic OBD2 plug (the company likes to call it a chip, but it doesn’t qualify as one) that works on all cars.

An OBD2 plug that works correctly has to be formulated to the specific make and model of car and the engine housed inside.

Additionally, the EcoMac has no actual port that goes into the engine, so there is no way it can send instructions to the ECU.

When considering the use of an EcoMac Fuel Saver, remember the following:

  • There are several different “official” websites for the EcoMac, including and

  • All of the sites listed above sell the same item under slightly different names

  • The domains are owned by different company names


The EcoMac has been sold under a number of other names (e.g. EcoMax)

The EcoMac has been sold under a number of other names (e.g. EcoMax)

Is EcoMac Legit?

No, the EcoMac is not an actual gas saver as it claims to be.  It's impossible to have a generic OBD2 plug that can perform the same action on all vehicles. 

One red flag that you will notice right off the bat is that the seller's website doesn't explain how the device works.  Instead, a high-level description is provided, but nothing specific. 

The EcoMac seller claims that they are effective on all cars, even those with diesel engines, made after 1996.

This action isn’t possible with the varied engine types and highly sophisticated technology that different car brands utilize.

You will also notice, upon close inspection, that there is no connection between the device and the actual communication paths through the OBD.

Without this, there is no way for the EcoMac to re-program within the engine or boost the fuel efficiency or torque, as the seller claims.

The reality is that the EcoMac (or EcoMax) is just a cheap piece of plastic that the seller has bought in bulk, branded with their chosen name, and is trying to resell at a much higher price.

In fact, we found generic 'fuel savers', identical to the EcoMac, sold on Chinese e-commerce site AliExpress for as low as $0.75 a piece.


Generic 'fuel saver' identical to the EcoMac, sold on AliExpress for much cheaper

Generic 'fuel saver' identical to the EcoMac, sold on AliExpress for much cheaper


Additionally, Consumer Reports and the Environmental Protection Agency have tested many fuel-saving devices over the years and have yet to find one that works.

Customer Reviews & Complaints

When you visit any of the EcoMac Fuel Saver websites, you will see a large number of positive testimonials from customers that found success with the product.

However, none of these reviews have been verified.  If you visit Reddit or Amazon, you will see many negative reviews regarding the product and similar devices on the market.

Many that have purchased the product on Amazon refer to it as a “piece of junk” because it does not affect fuel efficiency as it claimed.

Although some have stated that they saw a difference, it is likely that other circumstances (highway driving, weather conditions, gas price) contributed to the change and not the device.

The company is not accredited with the Better Business Bureau (BBB).


Where to Buy EcoMac?

You can buy the EcoMac Fuel Saver on or any of the websites listed above.  Similar items are available on Amazon but not in stores.


How Does a Fuel Saver Work?

EcoMac Fuel Savers is claimed to work by plugging the device into the OBD2 port.

The company claims that it can then communicate with the ECU to adapt the engine for optimal fuel efficiency.


What Is The Best Fuel Saver Device?

There is no fuel saver device on the market that has successfully improved fuel economy.


Do Fuel Saving Devices Work?

Both Consumers Reports and the EPA have yet to test a fuel-saving device that is effective and successful at what they claim to do.

Customer Service

If you would like to get more information on EcoMac Fuel Saver, you can try contacting the company via their phone number at +1 (251) 219-5779 or through email at [email protected].

The listed business address is:

10750 Columbia Pike Suite 200
Silver Spring, MD 20901 US

Improving fuel efficiency

According to the international auto company AAA, here are a few suggestions for appropriately increasing fuel efficiency:

  • Minimize cold engine operation
  • Drive conservatively
  • Shift gears efficiently
  • Anticipate road conditions
  • Observe speed limits
  • Use cruise control
  • Avoid excessive idling
  • Avoid rush hour
  • Remove unnecessary items from the vehicle
  • Perform regular car maintenance Make sure to use the proper type of oil in your car
  • Check the tires for proper inflation at least once a month
  • Make sure the engine air filter is clean
  • Always have a mechanic review your “Check Engine” light when it comes on
  • Try to avoid the use of rooftop luggage carriers
  • Park in the shade

The Bottom Line

Gas prices can be a huge burden to your budget, especially as they are continually changing and often on the rise.

Fuel-saving devices like the EcoMac are claimed to help your car engine operate more efficiently and help improve fuel economy.

The devices are claimed to use the OBD2 port to interact with the ECU and instruct the engine on how best to work with your personal driving habits. 

However, multiple authoritative agencies have stated this isn’t possible.  To have a generic device for all car and engine types isn’t feasible.

Additionally, the technology that these devices use doesn’t even communicate with the ECU as claimed.

With that, we determine that the EcoMac Fuel Saver is a scam.

A better idea is to follow the guidelines provided by companies like the AAA on preserving gas by altering your driving habits.

If you have any experience with EcoMac Fuel Saver, please leave your reviews below.

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EcoMac Customer Reviews

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February 21, 2024
I purchased 2 of these devices, installed one on a jeep wrangler 2016 and the other on a chevy silverado 2014, Today february 22nd, I removed the one on the jeep, It simply does not work, when you fill up with the device it says DTE 287 miles and without the device DTE 337 miles.... CRAP mega CRAP

Maybe scam
August 31, 2023
How come no active website no active phone number no customer service reply. No product has been received. Is this a big scam?

This device is not ready, yet.
April 16, 2022

I installed the ecomax on my 2014 GMC Sierra before I traveled from Michigan to Mississippi. My truck broke down in Birmingham, AL. I have an almost 4,000 dollar repair bill pending right now.