Subaru WRX STI Problems: 8 Issues Every Owner Should Know
2004-2021 model years ยท 1,260+ owner reports ยท Updated April 2026
According to Au7o's analysis of 1,260+ owner reports, the 2004-2021 Subaru WRX STI has 8 documented known issues, with 3 rated critical. The most serious are Spun Rod Bearing Failure (EJ257) ($5,000-$12,000 repair), EJ257 Piston Ringland Failure ($3,000-$7,000 repair) and Oil Starvation During Hard Cornering (EJ257 Boxer Engine) ($200-$3,500 repair). The most commonly reported issue is Spun Rod Bearing Failure (EJ257) with 780 owner reports. Across all issues, repair costs range from $50 to $12,000. DIY maintenance guides at au7o.io.