Best Year to Buy a Ford Flex
Reliability rankings across 11 model years, based on NHTSA owner complaints
Based on 11 model years of NHTSA complaint data, the 2017 Ford Flex is the most reliable year to buy with a Klunk Score of 90/100 ("Smooth Ride") and only 40 owner complaints. The 2013 model year is the least reliable with 576 complaints and a score of 21/100 ("Check Engine").