The cars runs just fine on E10. We really only have 2 types of fuel over here. E10 (octane rating of 108) with up to 10% ethanol and Euro 95 with up to 5% ethanol (with an octane rating of 98). There is also Euro 98 but that’s only available at the big gas stations. We had Euro 101 (real racing fuel yo) but that has disappeared.
So the difference isn’t really that big but apparently E10 will ruin the engine. I’ve been contacting allot of dealers and what I now think is that the rubber fuel lines and the rubber seals of the injectors wil perish.
All the mechanics I spoke to advised to keep driving on E95 since is more fuel efficient and the engine stays happy longer.
I’ll be testing with my car how efficiënt it is with both types of fuel. The m300 gets around 17km per liter.
My mom drives allot and with the crazy fuel prices now she could safe allot of money by driving on E10. But if that means that the engine will give more problems I’m not sure if it’s worth it. And maybe if the E95 is really more fuel efficient the cost won’t add up against the negatives.
I’ll keep researching and if I find anything else I’ll be sure to post it here