2004 Buick Regal Problems: 1 Known Issue
2004 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated August 2026
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2004 Buick Regal has 1 documented issue, with 1 rated critical. The most serious is Valve Cover Gasket Oil Leak Onto Exhaust Manifold — Fire Risk (NHTSA 15V201000). DIY maintenance guides at au7o.io.