Is the R129 a future classic?
Future Outlook The R129 is seen today as a highly desirable modern practical classic car. It commands a higher average price than its successor, the R230 SL, not least due to its mechanical simplicity. The value of the R129 has not declined for some considerable time. The 2003 to 2012 R230-Series SL is one of the least expensive ways into modern SL ownership, but it’s also the most problematic version. While a well-maintained R230 can be a bargain, pre-2008 cars are known for leaky roofs, rust, and problems with two very complex systems, ABC and SBC.