Mercedes-Benz GLK-Class Problems: 3 Issues Every Owner Should Know
2010-2015 model years ยท 1,350+ owner reports ยท Updated April 2026
According to Au7o's analysis of 1,350+ owner reports, the 2010-2015 Mercedes-Benz GLK-Class has 3 documented known issues, with 1 rated critical. The most serious is Diesel Injector Leak and Black Death (OM651) ($400-$2,000 repair). The most commonly reported issue is Diesel Injector Leak and Black Death (OM651) with 550 owner reports. Across all issues, repair costs range from $400 to $2,000. DIY maintenance guides at au7o.io.