Owner complaints, recalls, fuel economy and safety ratings from public NHTSA and EPA data, updated Oct 17, 2026.
Fuel economy
17–19 mpgcombined; city 15–16, highway 21–23; every version of this model year
Five years of fuel
$17,100–$19,110U.S. average; Ohio $15,280–$17,070 at local prices; every version of this model year; fuel only, not other costs of owning it; 15,000 miles a year, at EIA fuel prices for the week of Oct 12, 2026
NHTSA's VIN data lists these trims for the 2018 Flex. A trim's engine and numbers are shown as its own only where EPA names versions after the trim and no other version could be it; "seen with" means a source shows that engine on the trim, not that it was the only one. Recalls and complaints cover the whole model year: whether a recall applies to a car depends on its VIN, on NHTSA's recall lookup.
Owners have filed 68 complaints with NHTSA about the 2018 Flex. These are unverified owner reports, counted by the part of the car they name; one complaint can name several parts. Counts aren't adjusted for how many were sold, so they don't show how reliable a car is.
Complaints by part of the car
Part
Complaints
Crashes
Fires
Injuries
Unknown or other
20
2
0
1
Structure
18
0
0
0
Back over prevention
14
2
0
0
Electrical system
12
4
0
0
Suspension
9
1
0
0
Air bags
2
2
0
0
Fuel/propulsion system
2
0
0
0
Lane departure
2
0
0
0
Power train
2
0
0
0
Service brakes
2
0
0
0
Steering
2
0
0
0
Wheels
2
0
0
0
2 more parts
Electronic stability control (ESC)
1
0
0
0
Engine
1
0
0
0
Complaints by model year
Newer years have had less time to collect complaints, and counts aren't adjusted for sales, so a shorter bar doesn't mean a more reliable year.
NHTSA lists 3 recall campaigns for the 2018 Flex over its history. Campaigns are matched by model and year, so each one may apply to a given car, and its repair may already be done: check a VIN on NHTSA's recall lookup for the open recalls on that exact car.
Ford Motor Company (Ford) is recalling certain 2017-2019 Flex vehicles. The driver and front passenger B-Pillar door trim may detach while driving.
Risk: Door trim that detaches while driving can create a road hazard, increasing the risk of a crash.
Remedy: Dealers will repair or replace the B-pillar trim as necessary, free of charge. Interim letters, notifying owners of the safety risk, were mailed December 17, 2025. Additional letters will be sent once the remedy is available, anticipated March 2027. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25SB8. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on October 28, 2025.
Ford Motor Company (Ford) is recalling certain 2015-2019 Flex, 2015 Explorer, Lincoln MKT, Lincoln MKZ, 2015-2016 C-Max, Escape, Taurus, 2016 Fusion, 2018-2019 Taurus, 2019 Lincoln MKT, Fiesta, and 2020 Mustang vehicles. The rearview camera may display a distorted, intermittent, or blank image when the vehicle is in reverse.
Risk: A rearview camera that fails to properly display an image can reduce the driver’s view behind the vehicle, increasing the risk of a crash.
Remedy: Dealers will inspect and replace the rearview camera as necessary, free of charge. This will be a phased campaign, with the remedy becoming available in different phases based on model and model years. Interim letters notifying owners of the safety risk were mailed on October 25, 2025. Additional letters will be mailed once the final remedy is available on each phase. Mustang owner notification letters were mailed January 2, 2026. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25SA9. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on October 14, 2025.
Ford Motor Company (Ford) is recalling certain 2013-2018 Lincoln MKT and Ford Flex and Taurus vehicles with the Police Interceptor or SHO Performance Pack. The rear suspension toe links may fracture due to stress on the rear suspension.
Risk: A fractured rear toe link will cause a sudden change in vehicle handling and increase the risk of a crash.
Remedy: Ford will notify owners, and dealers will replace the rear suspension toe links, free of charge. Remedy parts are not currently available. Owners were notified about the recall on March 3, 2020. A second notice will be mailed when remedy parts become available, which is currently expected to be the end of September 2020. The recall began October 28, 2020. Owners may contact Ford customer service at 1-866-436-7332 or Lincoln customer service at 1-800-521-4140. Ford's number for this recall is 20S04.
Carmakers sent NHTSA 64 service bulletins and notices that cover the 2018 Flex, the latest on Sep 30, 2026. They tell dealers how to fix known issues.
The parts they mention most: electrical system (29), equipment (25), power train (9), engine and engine cooling (7), unknown or other (6).
NHTSA defect investigations
Opening an investigation isn't a finding of a defect. Outcomes are as NHTSA's summary states them. A recall is shown as an investigation's outcome only where NHTSA's summary names it; other recalls NHTSA's file lists with it are marked as listed, not caused.
Investigation
Part
Opened
Status
Preliminary evaluation PE25007 B-Pillar Trim Detachment
The owner's manual gives the oil and how often to change it. We show oil facts only once we've checked them against the manual, and we haven't yet for the 2018 Flex.
These are searches on those sites; we don't copy or check their listings. Your ZIP is used for these links and never kept.
Specs
EPA class: standard sport utility vehicle. EPA greenhouse gas score: 3 out of 10. Each version EPA tested:
Swipe the table sideways for more columns.
Version
Engine
Transmission
Fuel
City / hwy / comb
Flex Front-Wheel Drive
3.5 L, 6 cyl
Automatic (S6)
Regular Gasoline
16 / 23 / 19
Flex All-Wheel Drive
3.5 L, 6 cyl
Automatic (S6)
Regular Gasoline
16 / 22 / 18
Flex All-Wheel Drive
3.5 L, 6 cyl, turbo
Automatic (S6)
Regular Gasoline
15 / 21 / 17
Sources and dates
U.S. EPA fuel economy data, file of Sep 29, 2026
NHTSA owner complaints, file of Oct 17, 2026
NHTSA recalls, file of Oct 17, 2026
NHTSA manufacturer communications, file of Oct 17, 2026
NHTSA defect investigations, file of Oct 17, 2026
NHTSA 5-Star Safety Ratings, file of Aug 7, 2026
U.S. Energy Information Administration, file of Oct 12, 2026
Fuel cost: EPA mpg with fuel prices for the week of Oct 12, 2026 and electricity prices for Jul 2026. Source: U.S. Energy Information Administration (Oct 2026). Complaints are unverified reports owners filed with NHTSA. About the data