definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
27,468 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2010 Ford Flex engine problems

engine problem

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2010 Ford Flex Owner Comments

problem #4

Nov 282014


  • 52,843 miles


The contact owns a 2010 Ford Flex. While driving approximately 60 mph, the vehicle stalled. No warning indicators were illuminated. The vehicle was taken to a dealer where it was diagnosed that the engine air filters needed to be cleaned. The vehicle was not repaired. The manufacturer was not notified of this issue. The failure mileage was 52,843. The VIN was unavailable.

- Minnetonka , MN, USA

problem #3

Oct 302013


  • 37,000 miles
Heater blows cool air when in idle or parked.

- Fox Lake, IL, USA

problem #2

Sep 062011

Flex 6-cyl

  • 20,000 miles
Engine shuts down on a rolling stop, first incident rolling stop on a stop and go traffic second incident rolling stop to a stop light third incident slowing down to make a turn.

- Monroe, NJ, USA

problem #1

Jun 012011

Flex 6-cyl

  • 30 miles
After owning the new vehicle for three months it started randomly slipping into neutral. At first, it did this when accelerating from a stop (which is very dangerous in busy intersections, left turns and merging). It now does it then and in addition at highway speeds - 50+. it also at times has engine surges when at a complete stop. It also surges and hesitates at 45mph to highway speeds, at times causing such a speed variance that it will shut cruise control off, slip into neutral and rapidly decelerate before correcting itself. There have been 5 repair attempts at a Ford dealership. They have not been able to determine the problem. They sent it home with me until it does it "all the time" or breaks down.

- Mequon, WI, USA

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