"Biggest problem I have had is with tire pressure monitors-optional in 2003 and I wish the original owner had not selected this option. They have not worked properly since I bought the car, several trips to dealer under warranty with no results. Got tired of taking to the dealer. Later learned it will cost $350-400 per wheel to fix!! Would love to simply disable tpm but cannot. Its "illegal" even though tpm was not mandatory on 2003 models."
"Bought my 2003 used in 2007 with only 7000 miles on the odometer for 1/2 the list price, and have driven it only sparingly since. Had multiple trips to the dealer for, of all things, the tire pressure monitor! They never did get that fixed, and now that the warranty is expired I find the little monitors are @ $300 each, and all four should be replaced. Also the strut that is supposed to hold the trunk lid upright now needs to be replaced. Having said that, the car overall is a pleasure to drive, and as good looking as they come!"
"I have owned more than a dozen MB products over the years and certainly they had their problems in the late 80's and early 90's. The latest S and SL class cars are light years ahead in quality and reliability. This SL55 is substantially better than even the earlier example of the lesser powered brother of just 3 years ago. Pricey but always a thrill to drive!"
"The MB SL500 is as good as it gets, in my opinion. The car is a style icon and the MB reliability and quality are well known. I have owned three SL's and all have been excellent.
If you opt for the SL600 (V12 version) you have more money than good sense. Priced at more than $40K over the SL500 you are literally paying that for 4 cylinders. I know, I have been there and done that."