I have a 09 ML320 Bluetec with air suspension. Very comfortable and suspension can be switched to Sport for sharp cornering. Have been driving for 4 years, 75,000 kms now and so far so good. The only thing very annoying is the maintenance cost. I always sent to the dealer every 15,000 kms, and so far to 75,000 kms I already paid $5,000 for just the maintenance with nothing broken or worn. Other Germany equal competitors are offering prepaid maintenance with $6,000 for 8 years-160,000 kms all inclusive (brake pads, rotors, disc, clutch, fluids, etc). Now I'm just half way there and haven't changed any brake stuff or worn parts, already spent $5,000. Having previously owned 997 Turbo for 4 years and currently own 458 Italia, I can say the maintenance cost of Mercedes' diesel truck is more than Porsche 997 Turbo and getting close to Ferrari's high performance super car. Mercedes Canada should offer prepaid like the MBUSA does.