2018 Ford Flex problems & reliability
61 owner complaints filed with NHTSA for the 2018 Ford Flex, alongside 3 safety recall campaigns. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
1 complaint report injuries (1 injured).
Federal crash records (FARS 2020–2023): 2018 Ford Flex vehicles were involved in 9 fatal crashes with 2 occupant deaths. Involvement counts are not adjusted for how many are on the road and do not imply fault or a vehicle defect.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Structure → | 17 | 28% |
| Unknown OR Other | 15 | 25% |
| Back Over Prevention → | 12 | 20% |
| Electrical System → | 11 | 18% |
| Suspension | 9 | 15% |
| Air Bags | 2 | 3% |
| Fuel/propulsion System | 2 | 3% |
| Lane Departure | 2 | 3% |
| Power Train | 2 | 3% |
| Service Brakes | 2 | 3% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Mileage when problems occurred
Half of the failures with a reported odometer reading occurred by 57,000 miles (middle 50% between 37,599 and 75,093 miles), based on 27 complaints that included mileage.
Complaints by incident year
What owners report
“Recall has not been remedied, and it has been over six months.I was told it would be remedied by june or ford would be held accountable for compensating for repairs on the.Recall. #25SA9/25v695 The recall addresses the camera for backing up witch is still not functioning in a safety risk.”
Electrical System · filed May 31, 2026
“Wile driving 40 mph, the right rear tire locked up and I had to counter steer aggressively to avoid spinning out and hitting oncoming traffic. The car was flat bed delivered to Ford and they recommended the following repairs. "Control Arm- Rear: rear suspension lateral links. The rear upper and lower control arms not…”
Service Brakes · filed May 28, 2026
“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…”
Engine · filed May 27, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Federal defect investigations
- B-Pillar Trim Detachment
Preliminary Evaluation PE25007 · opened Aug 7, 2025 · closed Aug 5, 2026
Technical service bulletins
63 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2018 Ford Flex. The 10 most recent:
NEW VEHICLE DELIVERY HOLD - Emissions Recall 25E10 - Supplement #1 Certain 2018-2020 Model Year F-150 Vehicles With 3.3L Engines and 2016-2019 Model Year Explorer, Taurus, and Flex Vehicles With 3.5L Engines Powertrain…
25E10-S1 · Emissions · issued Jul 2, 2026
Ford and Lincoln vehicles equipped with wired keyless entry keypad systems and accessory wireless keyless entry keypad systems may or may not come with a wallet card containing the master code. Unlike the integrated…
SSM 54601 · Service Bulletin/Repair Instructions · issued Feb 24, 2026
This article supersedes TSB 24-2165 to update the TSB Service Procedure. Some vehicles listed in the Model statement above may exhibit various SYNC performance related concerns including but not limited to: Display…
TSB 25-2570 · Service Bulletin/Repair Instructions · issued Nov 26, 2025
Some 2015-2021 Ford and Lincoln vehicles may exhibit an illuminated MIL with diagnostic trouble codes (DTCs) P0011, P0012, P0014, P0015, P0016, P0017, P0018, P0019, P0021, P0022, P0024 and/or P0025. Pinpoint test HK in…
SSM 54366 · Service Bulletin/Repair Instructions · issued Nov 12, 2025
While performing a transmission repair on some 2012-2024 Ford and Lincoln vehicles, a transmission seal kit may be on backorder due to supply chain interruptions. While performing a transmission repair on some 2012-2024…
SSM 53040 · Service Bulletin/Repair Instructions · issued Oct 10, 2024
This article supersedes TSB 21-2175 to update the TSB Service Procedure. Some 2016 MKS, 2016-2017 Navigator, 2016-2018 F-150/Focus/C-MAX/Edge/Fiesta/MKX/Transit Connect/Mustang, 2017-2018 Continental/Fusion/MKZ…
TSB 24-2165 · Service Bulletin/Repair Instructions · issued May 27, 2024
All accessory stick-on keyless entry keypads come with a wallet card containing the master code. If the accessory keypad was factory installed, this card will be placed in the glove box and should be handed to the…
SSM 52476 · Service Bulletin/Repair Instructions · issued Apr 24, 2024
During service and repair requiring removal and replacement of a crankshaft bolt and/or crankshaft damper, achieving proper torque of the crankshaft pulley bolt is critical. Incorrect torque may allow the bolt to loosen…
SSM 52314 · Service Bulletin/Repair Instructions · issued Mar 1, 2024
The Service Awareness Newsletter is an informal communication that contains information that may not be presently available in a TSB, SSM, GSB, or other electronic communication. This article includes information on…
SAN-Vol1 I1 · Service Bulletin/Repair Instructions · issued Jun 8, 2023
For 2000-2024 Ford and Lincoln vehicles, swapping a module from a vehicle for diagnosis purposes is likely to cause errors and is not recommended. It is also not recommended to order a replacement module using a vehicle…
SSM 51536 · Service Bulletin/Repair Instructions · issued Apr 4, 2023
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
The 2018 Ford Flex has 3 NHTSA recall campaigns — recall repairs are free at franchised dealers regardless of the vehicle’s age.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2018 Ford Flex?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.
- · Owners most often reported problems around 57,000 miles — budget accordingly if the car is approaching that mileage.