This is an extremely fast car, with terrific brakes, a genuinely usable back seat, and decent trunk space (for a convertible). Unfortunately, the steering detracts markedly from the driving experience. Drive the new 3 series convertible, and you will wonder why anyone would pay almost double for the Mercedes, as the 3 series is loads more fun to drive. I had the 3 series, but traded it because of the minuscule trunk space and issues regarding run-flats. I like the AMG--but I have to admit-- reluctantly--that the 3 series was much more fun, at just over half the price, and it gets much better gas mileage. However, given the trunk space issue with the BMW, I am glad I made the switch.
Engine and brakes. Stereo is pretty decent.
Lumbar adjustment is limited to driver's seat--for long trips the passenger seat thus becomes uncomfortable. Steering is lackluster- -this car feels like a big heavy car (which it is). Interior is chunky and boring. Gas mileage should be improved. I average 10-12 city--hwy is better--around 23-24-