Having had an awful 2010 C350CDI (first and last diesel for me!), I couldn't wait to get rid of it. I replaced it with a Cavansite blue 2012 C350 Sport petrol and love it. It has got heated & air conditioned seats, glass sunroof, Harman Kardon 450W Hi-Fi, electric memory seats, COMAND, front & rear claimate control, 18" AMG alloys, storage pack etc etc
The engine sounds awesome when revved (unlike that awful 6 cyl diesel which made terrible unrefined induction noises and a "pinking" like sound too - impossible I know but it did! Plus the DPF kep sending the wretched thing into limp home mode!).
Steve (Whitstable, Kent)