There are 1 owner-reported engine complaints for the 2005 Audi A8in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
OWNER WAS DRIVING THE AUDI HOME WHEN HE SMELLED SOMETHING BURNING. HE PULLED OVER AND OBSERVED A FIRE IN THE ENGINE COMPARTMENT. FIRE BURNED WITH GREATEST INTENSITY IN LOWER LEFT REAR OF ENGINE COMPARTMENT, FROM LOCATION OF LEFT SIDE CATALYTIC CONVERTER. SPARK PLUGS REMOVED FROM ENGINE SHOWED OVERFUELING PROBLEM IN #6 AND #8 CYLINDERS ON LEFT BANK, CAUSING CATALYTIC CONVERTER TO OVERHEAT AND START THE FIRE. *NM
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 26, 2026