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Ford · Full-Size SUV · 2009–2019 Custom Search

Ford Flex 1

Weaknesses, engine ratings and buying advice

Vehicle Weaknesses

WeaknessCost
✖Timing Chain-Driven Water Pump — Engine Damage

3.5L/3.5L EcoBoost with internal chain-driven pump. Coolant mixes with oil on seal failure — engine damage. Repair up to $7,000. Most common catastrophic failure on the Flex.

Symptoms: Coolant in oil, white exhaust smoke, overheating, code P0016
from 100,000 km
Ad water pump Ford Flex 3.5 V6
 High

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Known Problems and Issues +

A total of 6 weaknesses have been documented for the Ford Flex 1 (2009–2019). Typical issues affect Cooling, Electronics, Steering, Other.

What to watch out for with the Ford Flex? See the detailed listing of all engine and vehicle weaknesses in the sections above.

Frequently Asked Questions

What problems and weaknesses does the Ford Flex 1 have? +
No known weaknesses have been documented for the Ford Flex 1.
What should I look for when buying a used Ford Flex 1? +
faq.watch_a_none
Which engine is recommended? +
None of the available engines are rated 'Good Choice'. Stay away!
Is the Ford Flex 1 worth buying used? +
The Ford Flex 1 requires careful consideration — choosing the right engine variant is crucial.

Last updated: February 2026 · All information without guarantee