There are 3 owner-reported engine complaints for the 2003 Chevrolet Corvettein NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
WHILE DRIVING MY 2003 CORVETTEZ06 DOWN THE HIGHWAY ON VACATION, IT BROKE A VALVE SPRING, THE ENGINE THEN TOTALLY SELF DESTRUCTED, RUINING EVEN THE BLOCK. GM DENIED ANY HELP BECAUSE IT WAS OUT OF WARRANTY TIME WISE. IT HAD ONLY 30,000 MILES ON IT. THE DEFECTIVE SPRINGS ARE A KNOWN DEFECT ON 02,03 YEAR Z06S. *TR
VEHICLES OIL PAN GASKET, APPARENTLY DEFECTIVE ON 2003 CORVETTE WITH ONLY 2,000 MILES. LOSS OF OIL POSSIBLY LEADIING UP TO SEIZED MOTOR WHILE DRIVING ENDANGERING OTHER MOTORISTS. PRESENTLY BEING REPAIRED UNDER WARRANTY. *AK
CONSUMER STATED THAT WHILE DRIVING AND WITHOUT WARNING THE ENGINE WILL REV CAUSING AND DISTRACTION TO THE CONSUMER. DEALER NOTIFIED
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026