2018 Ford Flex Engine Problems
- Complaints
- 1about this part
- Share
- 1%of 69 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the engine of the 2018 Ford Flex, 1% of the 69 complaints for this model year.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“An antifreeze leak is very hard to locate because Ford’s design placed the water pump INside the engine rather than on the OUTside, which would be more the norm. If antifreeze leaks enough, it gets into the oil and the entire engine stands to be destroyed. Our heater quit blowing warm air recently and after intently searching we discovered that we had an antifreeze leak inside of our engine, and antifreeze was slowly leaking out through a weephole in the engine. The water pump had gone bad and needed replacing. The hours required to replace this water pump are intense and they are long. …”
NHTSA complaint #11740471, filed 2026-05Related service bulletins
- 10159494Apr 26, 2019SSM 47948 - 2010-2019 Various Vehicles - Turbocharged Engines - Oil Supply Filter Replacement When Replacing The Turbocharger Or The Turbocharger Oil Supply Tube For 2010-2019…
Engine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2019 | 5 | 2% |
| 2018 | 1 | 1% |
| 2017 | 1 | 2% |
| 2016 | 8 | 8% |
| 2015 | 11 | 10% |
| 2014 | 22 | 9% |
| 2013 | 33 | 6% |
| 2012 | 11 | 17% |
| 2011 | 25 | 17% |
| 2010 | 30 | 22% |
| 2009 | 36 | 20% |
Other parts of the 2018 Ford Flex
20 complaintsBody and structure
19 complaintsBack-over prevention (rear camera)
14 complaintsElectrical system
12 complaintsSuspension
9 complaintsAir bags
2 complaintsBrakes
2 complaintsFuel system
2 complaintsLane departure
2 complaintsSteering
2 complaintsTransmission and drivetrain
2 complaintsWheels
2 complaints
← All problems reported for the 2018 Ford Flex
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology