Best Year to Buy a Pontiac Bonneville
Reliability rankings across 6 model years, based on NHTSA owner complaints
Based on 6 model years of NHTSA complaint data, the 2005 Pontiac Bonneville is the most reliable year to buy with a Klunk Score of 94/100 ("Smooth Ride") and only 27 owner complaints. The 2000 model year is the least reliable with 223 complaints and a score of 50/100 ("Proceed with Caution").