Best Year to Buy a Bmw 640i
Reliability rankings across 5 model years, based on NHTSA owner complaints
Based on 5 model years of NHTSA complaint data, the 2019 Bmw 640i is the most reliable year to buy with a Klunk Score of 100/100 ("Smooth Ride") and only 2 owner complaints. The 2015 model year is the least reliable with 4 complaints and a score of 99/100 ("Smooth Ride").