Toyota Highlander Problems: 6 Issues Every Owner Should Know
2001-2024 model years · 4,230+ owner reports · Updated April 2026
According to Au7o's analysis of 4,230+ owner reports, the 2001-2024 Toyota Highlander has 6 documented known issues, with 4 rated critical. The most serious are 2GR-FE V6 Excessive Oil Consumption ($0-$4,000 repair), Hybrid Battery Pack Degradation and Failure ($1,500-$5,500 repair), 2.4L 2AZ-FE Head Gasket and Head Bolt Thread Failure ($2,500-$5,000 repair) and 2GR-FE V6 Oil Leak (Timing Cover and Oil Cooler Line) ($300-$4,000 repair). The most commonly reported issue is 2GR-FE V6 Excessive Oil Consumption with 1,850 owner reports. Across all issues, repair costs range from $0 to $5,500. DIY maintenance guides at au7o.io.