這E300是diesel 還是汽油？嗎年的？ 區別太大了

E300 Bluetec is supurb, way better than ML350 for current model year.  Prices are big different.
If you are asking E300 gasoline engine, the latest model was 2009.  Are you comparing ML350 with E300 in 2009?

So you'd need to make up a better question with clear definitions.