Get Can Bmw Use Regular Gas Images. So if you use regular which should be around 87 octane you will have a slower combustion rate giving you less horsepower. It depends on your bimmer.
The main reason for the requirement of premium is that bad gas could cause major damage, and premium is less likely to be.
However, a bmw or any car whose engine is designed to use higher octane gas will run better and produce optimum power using the octane specified by the manufacturer. 2001 jetta tdi, 2005 jeep libby crd, 2012 bmw x5 35d. In other words, if i use regular gas, will it still perform very well (maybe just a couple hp less than documented) or will it have a significant reduction in the mdx uses premium and the pilot uses regular gas. Use premium gas, the higher the better.
