After owning a CLK-350 for 2 months, my average maintenance is $600 per month. Two manufacturing defects, beyond the warranty cost $600 each to fix. A noise from the A/C compressor clutch (bracket?) was repaited,Secondlt, a month later, the Tire Pressure warning came on. I reprressurized 4 times. Rgen the dash indicator turned red for tires. Next the dash said SRS malfunction. The dealer says wiring under the sets is defecrive and seats need to be removed, etc. This follows an experience with a 320E which was disastrous, window falling, etc.