GMC Terrain vs Ford Flex: which is more reliable?
The GMC Terrain is clearly ahead of the Ford Flex on the federal record: 83/100 against 67/100 across every model year we score.
The record, side by side
GMC Terrain
- 15 model years scored
- 2,848 owner complaints on record
- about 21 complaints per year on the road
- 36 recall campaigns, 10 safety-critical
- best year 2021 (92/100) · worst 2018 (71/100)
Ford Flex
- 9 model years scored
- 1,582 owner complaints on record
- about 19 complaints per year on the road
- 32 recall campaigns, 12 safety-critical
- best year 2017 (91/100) · worst 2013 (34/100)
Mean score is the average across model years from 2013 on, where both records are comparable. How the score works.
Year by year: Terrain against Flex
The comparison that decides the purchase. A nameplate is not one car — a redesign can move the record sixty points inside two years, and the two nameplates rarely move together.
What owners actually complain about
GMC Terrain
- Engine — 1,094 complaints
- Power Train — 417 complaints
- Visibility/Wiper — 346 complaints
Ford Flex
- Electrical System — 348 complaints
- Steering — 315 complaints
- Unknown Or Other — 220 complaints
They do not fail the same way: the Terrain's complaints concentrate in Engine, the Flex's in Electrical System. That difference matters more to a buyer than the score gap, because it says which repair bill you are taking on.
Years to avoid on each
GMC Terrain: no model year scores below 45; the strongest are 2011, 2012, 2013, 2014, 2015, 2016….
Ford Flex — avoid: 2013, 2019.
A year scores below 45 on complaints per year of exposure and recall campaigns. Every car’s years to avoid.
What each costs today
A recent used GMC Terrain prices at about $40,800 and a Ford Flex at about $37,500 — the Ford Flex is roughly $3,300 less, and they return 25.0 against 18.0 MPG combined.
Class-level estimates re-priced to your country, not a valuation of one car. Method.
FAQ
Is the GMC Terrain or the Ford Flex more reliable?
On the NHTSA record the GMC Terrain scores 83/100 against the Ford Flex's 67/100, averaged across every model year we hold. The GMC Terrain carries about 21 complaints per year on the road against 19 for the Ford Flex.
Which GMC Terrain and Ford Flex years should I avoid?
GMC Terrain: no year scores below 45. Ford Flex: 2013, 2019. Each of those scores under 45 out of 100 on complaints per year of exposure and recall campaigns.
What goes wrong on the GMC Terrain and the Ford Flex?
The largest complaint group on the GMC Terrain is Engine (1,094 complaints); on the Ford Flex it is Electrical System (348).
Is the GMC Terrain or the Ford Flex cheaper to own?
A recent used GMC Terrain prices at about $40,800 and a Ford Flex at about $37,500, before insurance and the maintenance band. Both pages carry the five-year running-cost figure.