eFlexFuel is the technology that transforms your fossil fuel car into an eco-friendly car!
As an authorized installation partner for eFlexFuel, we can help you with delivery and installation of eFlexFuel products, as well as assist with information regarding registering a fossil fuel car as an eco-friendly car with reduced vehicle tax as a result!
See the compatibility of your vehicle here: eFlexFuel Homepage
Check out the different products in our webshop here and get more info: eFlexFuel Webshop
Why have FlexFuel functionality?
Having the option to run on E85 has many advantages. To name a few, the fuel burns cooler and cleaner, has a lower environmental impact, has a higher potential to create more power in the engine than regular gasoline, lower vehicle tax with eFlexEco, has the potential to be a cheaper fuel than gasoline in the future and is even now in many cases cheaper to run on than gasoline. E85 is also basically completely resistant to knock and detonation, as long as it is delivered in the correct amount to the engine, which ensures more ignition, and higher boost pressure in supercharged engines without penalties.
E85 is also the fastest and easiest method for our vehicle fleet to reduce emissions, since the fuel network is already developed, and it is really just a matter of converting gasoline cars and starting to refuel.
But I have heard things like E85 destroys both engines and fuel systems?
This tends to be a very popular argument for opponents of environmental fuels and E85 in particular. But the argument is now not based on facts, but only on myths.
At the beginning of E85 fuel's entry into the market, the fuel was much tarrier, drier, dirtier and generally had quite poor quality with few additives that helped with lubrication, etc. But this was in the late 90s and early 00s. Today's E85 is of an extremely much higher quality with high-quality additives for lubrication, and many times exceeds the quality of the regular E10 fuel.
In addition, newer cars produced from the early 00s until now are so much more advanced than the cars that were converted at the time when these myths arose. Cars nowadays have fuel systems entirely made of stainless steel, and/or plastic. At that time, it was often carburetor cars, and cars with relatively primitive injection systems that consisted of aged rubber hoses and 10-20 year old fuel filters and dirty gas tanks that were victims of conversions, combined with models from car manufacturers that were not fully tested for their marketed flex fuel function. However, models from e.g. Saab, which has long been running fuel systems compatible with alcohol fuels since the Saab 9000, worked, and still works in principle flawlessly on E85.
In our own experience, we at the company have been running on E85 for almost 20 years now. Both in our own converted cars from various decades, and also in cars that were flex fuel from the factory. And this without any problems.
Do I need to service the car more often when I run on E85?
Short answer: No
Long answer: A petrol car should have new oil about once a year to feel good. Alternatively, after about 1000-1500 km is usually a good yardstick. This regardless of whether you run on petrol or E85. Good to know, however, is that petrol tends to evaporate at a much lower temperature than ethanol. So to keep the engine oil in good condition, it is important that the engine gets really hot so that any fuel that has found its way into the oil can boil away.
This about me getting the car inspected as an environmentally friendly car, is that really true?
Yep! With the EflexEco kit, installed by an authorized installation partner, you can register the car as an environmentally friendly car and get reduced tax. The car must then be on the list of compatible vehicles provided by eFlexFuel. This kit is approved by the Swedish Transport Agency and is based on a French regulation that has made the same conversion possible for many years now. The rest of Europe is also looking more and more positively at this conversion to renewables and more and more E85 pumps are appearing in, among others, Germany, Italy, Belgium, Poland, etc.
Is there any source and/or document from the Swedish Transport Agency on this?
Absolutely! Here is one of the certificates for Euro 5 and Euro 6 cars available from the Swedish Transport Agency: Certificate Transport Agency
And here is one of the French certificates that are all based on: French certificate
There are three different instances of certificates for Euro 5 and Euro 6 cars depending on the type of car in question. The names of these are as follows and can be requested from the Swedish Transport Agency:
TSV 2024-2453
TSV 2024-2455
TSV 2024-2457
Are there any complete lists of car models that are compatible?
The easiest way is to check your particular car model, or the car model you might be thinking of buying, on the eFlexFuel website which we link to in the products in the webshop and at the top here on the information page. New cars are added to the lists all the time and the best updated information is there.
Does registration with eFlexEco only apply to cars that are Euro 5 and Euro 6?
Euro 5 and Euro 6 cars have, despite the bad information given by both the government and the Swedish Transport Agency, been allowed to convert since the end of 2024. However, the agenda from the government seems to be that everyone should spend half a fortune on purchasing an electric car in order to meet the environmental goals. Most likely, therefore, the information has been very restrained about this.
Euro 3 and 4 cars have been allowed to convert since May 1, 2025. However, not all documents and testing are ready yet for this when it comes to the eFlexEco kits. So it will appear continuously in the lists at eFlexFuel.
Do not hesitate to contact us if there are more questions or concerns about this! We are happy to talk about it and are happy to bust all the myths that exist when it comes to E85 and alcohol fuels in general!