Frequently asked questions

  • eFlexFuel conversion kit is compatible with most gasoline-powered vehicles (cars and motobikes) that are equipped with multipoint fuel injection.
  • eFlexFuel is not compatible to diesel and direct injection engines.
  • Notice: Vehicle should be in good condition and maintained on time.
  • eFlexFuel recognizes fuel mixtures instantly. eFlexFuel ethanol conversion kits include an ethanol sensor. Users do not have to do anything when using different fuel-mixtures as eFlexFuel’s fuel recognition is fully automatic.
  • The conversion kit is delivered with a detailed installation manual that includes pictures of the installation process. If you have experience in simple automotive installations, you will most likely be able to install the conversion kit by yourself.
  • Yes. After the installation, you can use any mixture of gasoline and ethanol.
  • No. The device is ready for use immediately after installation. eFlexFuel uses ethanol sensor to detect fuel mixtures so there is no need for adjustment.
  • Yes. In very cold temperatures it is advisable to use a fuel mixture of E85 and regular gasoline (at least 5 – 10 % of regular gasoline) or to use engine block heater.
  • Car driveability is the same with gasoline. However ethanol gives more power and torque.
  • Yes. It is possible to remove the eFlexFuel conversion kit and return the car to the exact same state that it was in prior to the installation.
  • Yes. However, one should check adequate flow rate of the fuel injectors.
  • To the best of our knowledge, there are no reports of engine damages caused by the use of E85.
  • If the eFlexFuel is installed as instructed and used in the correct manner, there is no risk of car failure.
  • Since the energy content of E85 fuel is lower than that of regular gasoline more fuel needs to be injected during each injector cycle. Typically, the increase in the amount injected is about 28%.

Check the compatibility for your vehicle

eFlexFuel is not available for direct injection engines (CGI, FSI, GDI, EcoBoost, etc.) or diesel engines.

Loading... Do not update site!


If you cannot find your vehicle you can leave us a compatibility request. We add vehicles to our database when we are asked for compatibility.

a) VIN code is 17 characters. b) i, o, q are not allowed.

Sending message... Do not update site!

Thank you for your query!

We will contact you soon.

Sending failed.

Check the fields!

Something happened!!!

Try again later...

miles with ethanol

and counting...

based on cumulative eFlexFuel sales and average yearly drive