SL/R230: Looking to buy a 2007 SL550
1. Why are most of the cars for sale the 2007 model? It dwarfs the other years and was curious why.
2. I have a 2004 S430 and went through full Airmatic replacement two years ago. Just curious if this was
improved any in the SL.
3. Lastly, wanted to get thoughts on buying a car that has hardly been driven for two years. The total
mileage is only 60,000 miles but has been garaged.
Thanks.
1. Why are most of the cars for sale the 2007 model? It dwarfs the other years and was curious why.
2. I have a 2004 S430 and went through full Airmatic replacement two years ago. Just curious if this was
improved any in the SL.
3. Lastly, wanted to get thoughts on buying a car that has hardly been driven for two years. The total
mileage is only 60,000 miles but has been garaged.
Thanks.
Last edited by Eric79; Feb 11, 2019 at 10:04 AM.
My advice would be to look at a later model year. Some MY2007 M273 engines can experience premature wear of the timing chain idler sprocket (the V8's equivalent to "balance shaft failure" for the V6.M272 engine). Its a major job to replace it and the cost is over $4K. Also, the earlier (prior to MY2009) 7-speed transmissions have problems with internal speed sensors which is a dealer-only job to replace the conductor plate, costing about $1500. If you want the round headlights, then look at a MY2008, or at least check the engine to verify that it is beyond serial number 2739..30 088611 (go to datamb.com and plug in the VIN to get the engine serial number). If look at the the MY2009-2012, you get the revised front end and hood which you may or may not like. You also get a slightly more modern COMAND radio head unit with built-in Bluetooth hands-free, plus the option for Airscarf heated headrests and the power trunk open/close feature.
As for the suspension, I think you mean "Active Body Control" (ABC) and not Airmatic. The system in the SL is pretty much what you had in the S430. There were some changed for MY2007 and again fro MY2009 that might make it more reliable, but that remains to be seen. It's still a hig-pressure hydraulic system subjected to the harsh environment of a road-going automobile, so it will need maintenance over time as parts wear. if you DIY, then it's not a bad experience. If you rely on a shop, it can costs you many thousands of dollars to have a failure repaired.



Brian A.


