I'm interested in buying a 2003 E39 530. It is easier said than done...so I'm thinking I could expand my horizons and have a look at any of the E39 model years.
Is there a resource that could give me a comparison of the different model years. (options, engine ratings and general feedback...gems vs the duds?)
As an example...is the 530 engine the best choice compared to a 528 or 540 for fuel economy and horsepower?