The V6 SLK350's M272 draws careful buyer scrutiny. Commenters cite an MB TSB covering excessive oil consumption on early engine serial numbers, plus premature intake cam sprocket/'balance shaft' wear and EGR-fouled intake swirl flaps, generally surfacing around 50-80k miles. …
R171 SLK350 M272 engine concerns: oil consumption, cam sprocket, balance shaft
Mercedes-Benz SLK / SLC · mechanical