I miss the quick warm ups, the handling, and the performance of my BMW. The Mercedes rear window defroster works very slowly, the car takes a long time to warm up. It is strictly a luxury car. I do like the fact that it has had fewer trips to the dealer than the BMW, but it is not as enjoyable to drive. Oh yes, the windshield washer tank keeps leaking so I always have a malfunction showing on the dash, and when that shows, you cannot access the other features of the car's computer.
Have owned the car for about a month now and I am no sure I still love it. The straight line speed is second to none, I have driven ferraris that won't throw you back in your seat like this does. Being able to spin the rear-wheel at any speed under 50mph is incredible. Burnouts are as simple as turning off traction control and giving half throttle. However, the handling does not compare to the BMW 760Li I own. The understeer is so overwhelming it is almost dangerous, you are stunned the first time you take an off ramp at 50 and the tires begin to squeal yet the car keeps traveling in the same direction-scary. Also, driving in the rain is asking for trouble, traction control MUST stay on.
I always wanted a S600 Bi turbo but the 130K price it wasn't in the cards. So I oped for a 10 + year old model (2003) with about 90k miles for about $10,000. I have owned a E420 and C280 both very good vehicles and lasted well into the 250K mileage range. Unfortunately the S600 is not well built at all. I will start with the interior: Drives side door window regulator broke lose from the door itself, cheap rivets holding it on. RR passenger door lock not working. Hood & trunk struts wore out. Rear trunk assist pump failed. Exterior/mechanical issue; ABC system not working, bad accumulators and valve block, coil pack right side failed, valve covers leak, transmission conductor bad.
If you're looking for a large Sedan that is fun to drive, this is it! The torque is nothing less than incredible! This is not a sports car, it's a big sedan that goes 0-60 about as fast as a Ferrari. Seats are extremely comfortable. Much more so than my wife's CL500 upgraded seats. The "Keyless Go" has failed 4 times in 1.5 years. Everything else is superb. If possible, get this model over the S500. You won't be sorry. A great understated car!