Honda Clarity Problems: 4 Issues Every Owner Should Know
2017-2021 model years · 630+ owner reports · Updated April 2026
According to Au7o's analysis of 630+ owner reports, the 2017-2021 Honda Clarity has 4 documented known issues, with 1 rated critical. The most serious is Sudden Power Loss and Engine Over-Rev on Highway ($0-$150 repair). The most commonly reported issue is 12V Auxiliary Battery Drain When Vehicle Sits Idle with 210 owner reports. Across all issues, repair costs range from $0 to $1,200. DIY maintenance guides at au7o.io.