What the "S" in 4.8is really means....

[Curious Joel]

Originally Posted by breytonX5

There goes Steve's explanation. Really I don't think BMW's model nomenclature has any specific meaning. For example I've always thought the "c" stands for coupe like 325ci, 330ci. Then where's the c in 645i? It's a coupe, isn't it?

breyton, it is called the 645Ci. It says so on the BMW site.. Don't worry, I used to make that mistake all the time.

Can anyone tell me what "e" stands for? A friend of mine's dad has something like a 528e or something like that... Economy? I think it's a diesel.

To go back to the original point of the thread, I always thought it was the iS because it was the sport version of the X5... Not that it had the sport package, but that it was the equivalent to an M3/M5...