I am considering buying either a 3 series saloon or coupe 320d around 3 years old, there appear to be at least 3 different specs for the engine and 3 trim levels (m sport, ES and SE)

My question is firstly is there any difference in the performance and economy of the saloon and coupe? and secondly how can i tell which spec engine each car i'm looking at has? and thirdly what is the difference between the three trim levels?

many thanks in advance Dave

Edited by regedit on 08/01/2011 at 12:36