I have exactly the same car in my garage. Its a late 2007 Mercedes Benz C180 (W204) Kompressor Elegance with the optional full COMMAND navigation unit. Here's my review on it.....
I've had it for over a month now. All of its maintenance had been done previously so no worries for me. I only had to change the coolant and brake pads. The brake pads cost me Rs. 20,000, the coolant Rs. 5000 plus Rs. 5000 for the labor fee (Rs. 30,000, total). I got all of this from Shanawaz Islamabad. My car was worry-free from the start; it had a proper, complete and reliable maintenance record. The previous owner even gave me all the previous parts, labor etc receipts. Regarding fuel economy, I also have a 1.6L Manual Civic in the garage. Believe me, my Mercedes Benz is more economical than any Corolla or Civic any day. I use comfort mode mostly but sometimes, very rarely I do put it in sport. It gives me between 9-11 kpl usually (sometimes even 12-13 kpl) in city driving with the "heater" on (no AC usage in this weather). By city, I mean DHA 2, Islamabad. On the highway, it gives me between 11-15 kpl. FUEL ECONOMY TOTALLY DEPENDS ON YOUR DRIVING STYLE
I use full time hi-octane but I am planning to use both petrol and hi-octane mixed. Road grip and handling is phenomenal! Awesome acceleration in sport mode! It evens gives some serious slippage when you turn off ESP, put it in sport and floor it!
Regarding some more information on maintenance, oil change+spark-plugs+air-filter+oil -filter+labor cost= Rs. 35,000, the previous owner got all of that done from Shanawaz. Maintenance costs are not that high considering the time-interval of each part, like for how long after you've got to change or replace it
Its an awesome car by all means
I hope I've explained you everything
If you've got anything to ask, just shoot
