The data indicates that for the BMW 3 Series (2005-12) 330D 231 4DR Saloon 3.0D M Sport Auto, almost all vehicles (97.7%) are equipped with a 3.0-litre (2993cc) engine, with a small fraction (2.3%) featuring a 2.5-litre (2497cc) engine. Notably, every vehicle in the sample runs on diesel fuel, highlighting a consistent fuel type across this model. This suggests that the 3.0-litre engine is the dominant option for this model, likely reflecting the primary specification offered during its production years.