Mercedes-Benz C-Class 2014

2014 Mercedes-Benz C-Class: what owners report

• The 2007–2014 W204's rear axle can rust until it breaks, and Mercedes has paid for new rear axles as goodwill; a broken subframe near 118,000 miles is the top complaint on the 2009 US C300.2007–2014
• On the 2014–2021 W205, German inspectors note knocking front-axle parts more often than average from the second inspection, though they do not count it as a serious defect.2014–2021
• W204 diesels with the OM 651 engine (from late 2008) wear timing-chain tensioners and suffer leaking or failed piezo injectors; water pumps on diesels built in spring and summer 2009 also leaked.2008–2014
• On the W205, weak batteries can disable start-stop or stop the car altogether, and the infotainment and navigation feel complicated and dated.2014–2021