What octane is everyone running on their cars? I know the minimum is 87 octane, with 91 recommended and 93 recommended for M cars.
I’ve ran 87, 89, and 93 octane and have felt no performance difference. Also, I don’t hear any knocking on any octane thanks to the knock sensors.
Car is a g20 m340i with a b58.
FYI, on the inside of your fuel door you’ll find AKI 93.
The engine will muster on lower octane fuel but, it’s a high compression engine that does best higher octane gasolines.