According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 1988-2005 Toyota Celica has 15 documented known issues, with 8 rated critical. The most serious are Pre-Catalytic Converter Disintegration ($500-$2,000 repair), CT26 Turbocharger Wear and Oil Seal Failure (3S-GTE All-Trac) ($900-$2,500 repair), Viscous Coupling Center Differential Deterioration and Driveline Binding (All-Trac) ($800-$3,000 repair), 1ZZ-FE Engine Oil Consumption on European ZZT230 Celica (Toyota Europe EG-6020), Structural Rust: Floor Pans, Rockers, Rear Arches, and Strut Towers ($500-$6,000 repair), 3S-GTE Oil Consumption and High-Mileage Rod Bearing Wear (All-Trac Turbo) ($400-$4,000 repair), 3S-GTE Head Gasket Failure and Cooling-System Neglect (All-Trac / GT-Four) ($1,500-$4,000 repair) and 2ZZ-GE Lift Bolt Failure (GT-S) ($800-$2,500 repair). Across all issues with published estimates, repair costs range from $150 to $6,000. DIY maintenance guides at au7o.io.