Ford Flex owners have reported a total of 2,499 problems for their cars built in the 11 model years listed in the chart below. The chart shows the number of problems reported across all service years for each given model year of the Ford Flex. The 2013 Ford Flex cars have the most problems reported (768 problems).
The following chart shows the 34 most common problems for Ford Flex cars. The number one most common problem is related to the vehicle's electrical system (390 problems). The second most common problem is related to the vehicle's steering (379 problems).
It would not be fair to compare the Ford Flex of an older model year to newer model years since older vehicles have been in service longer and thus are expected to have more problems. In order to compare the reliability across Flex model years, we use the PPMY index which is defined as the problems reported per thousand vehicles per Year. A smaller PPMY index indicates greater reliability of the given model year cars.
PPMY = P / S / Y * 1000,
where P = total problems reported during the life of a Ford Flex model year; S = total units sold of the model year; Y = years since the debut of the model year (the age of the vehicle).
The results are shown in Table 3.
Another way to measure the reliability across the model years of the Ford Flex is to use the total number of problems reported during the vehicle's first year in service, as shown in the Table 4.
| Model Year | Problems Reported |
|---|---|
| 2018 Flex | |
| 2017 Flex | |
| 2016 Flex | |
| 2015 Flex | |
| 2014 Flex | |
| 2013 Flex | |
| 2012 Flex | |
| 2011 Flex | |
| 2010 Flex | |
| 2009 Flex |