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.
You’ll get worse gas mileage and potential long-term engine damage…all for $100 per year “savings”. Just use the recommended gas, ffs.
No you wont , there have already been many tests on this. The savings are about 4x what you think .