BMW model designations

BMW uses many letters to designate differences in its different automobiles. For example, a 325i is a 3 series with a 2.5 liter engine, and is fuel injected. A 635Csi is a 6-series with the 3.5 liter engine and is a fuel injected sports coupé.

* Ci - Fuel Injected coupe
* Csi - Fuel injected sports coupe
* CSL - Coupe Sport Lightweight
* e - ETA model: Fuel efficient cars with lower-revving engines. This meant more torque due to shorter stroke Fact|date=October 2007.
* es - ETA: Sports ETA model with sports package
* g - Biogas
* i - Fuel injected
* ic - Fuel injected cabriolet and convertible models
* is - Fuel injected sports: Sports package with better suspension, sway bars, etc. On E36 BMWs it meant the car was a two door, not that it had a sport package as is commonly believed
* iT - Fuel injected touring. BMW's station wagon
* iX - Fuel injected all-wheel drive
* L - Luxury (pre-E32), Long wheelbase (post-E32)
* M - Motorsport
* t - Hatchback
* Ti - Fuel injected touring compact
* Tii - Fuel injected touring international