BMW 1 Series Problems: 11 Issues Every Owner Should Know
2008-2019 model years ยท 880+ owner reports ยท Updated April 2026
According to Au7o's analysis of 880+ owner reports, the 2008-2019 BMW 1 Series has 11 documented known issues, with 3 rated critical. The most serious are N20 Timing Chain and Guide Failure ($1,800-$3,500 repair), Electric Water Pump Failure ($600-$1,200 repair) and N54 High-Pressure Fuel Pump (HPFP) Failure (135i / 1M) ($400-$1,400 repair). The most commonly reported issue is N20 Timing Chain and Guide Failure with 340 owner reports. Across all issues, repair costs range from $100 to $5,200. DIY maintenance guides at au7o.io.