BMW i8 Problems: 10 Issues Every Owner Should Know
2014-2020 model years · 700+ owner reports · Updated April 2026
According to Au7o's analysis of 700+ owner reports, the 2014-2020 BMW i8 has 10 documented known issues, with 4 rated critical. The most serious are Hybrid High-Voltage System Faults ($500-$8,000 repair), Fuel Tank Ground Cable Weld Defect - Fire Risk (Recall) ($0-$0 repair), Hybrid Cooling System Failure - B38 Engine Overheating ($500-$2,500 repair) and 12V Battery & High-Voltage System Interaction Issues ($200-$3,000 repair). The most commonly reported issue is 12V Battery Parasitic Drain with 280 owner reports. Across all issues, repair costs range from $0 to $8,000. DIY maintenance guides at au7o.io.