vs
Thermostat OEM Audi or Motorcraft
Reviews
I have an 06 Audi A3 2.0T Sportback with just over 105k miles; recently replaced the thermostat, spark plugs and coil packs. Other than being in need of some new brakes and a bit of cosmetic love, she's running strong.
Pros: running strong
Cons: needs new brakes
Vehicle:
Audi A3
Mileage: 168981 km
Your thermostat is probably stuck open. Replace it with an OEM Motorcraft version, not aftermarket.
Pros: OEM Motorcraft version
Cons: not aftermarket
The Motorcraft thermostat sounds promising though, never have an issue with genuine ford parts.
Pros: no issues, reliable
Vehicle:
Jeep Cherokee
I used a motorcraft RT-1139 thermostat. Comes with a jiggle valve to help bleed air already installed and cost me 8 bucks. You won’t find any place that says they fit other than some forum posts but they do indeed work, I installed one on my MJ with the only issue being me not refilling the radiator after dumping all the coolant.
Pros: works well, jiggle valve, good value
Vehicle:
Jeep
Part number: RT-1139
I requested they use only Motorcraft thermostat, because I knew there was a part # update. Threw the updated Motorcraft one in and it solved the issue.
Pros: solved issue, updated part
Vehicle:
Ford
Soon as i bought Motorcraft all was normal again
Pros: all was normal
Vehicle:
Ford
Recently had the exact same issue on a 14 a6 ended up being a DOA t stat I compared the shaft length on the new t start to the 2nd new t stay and sure enough it protruded out about a mm further just enough to not seal properly causing the over cooling after the swap no more issues.
Pros: no more issues
Cons: over cooling
Vehicle:
Audi A6
Had this happen to our 2018 Q5 a few months back, 35k miles on the SUV. Thermostat issue plus some other stuff.
Vehicle:
Audi Q5
Mileage: 56327 km
I bought a Motorcraft thermostat from the Ford dealer for my Crown Vic and it ran about 20 degrees cold.
Cons: ran 20 degrees cold
Vehicle:
Ford Crown Victoria I
I’ve had a Motorcraft thermostat fail after 100mi on my Ford
Cons: failed quickly
Vehicle:
Ford
Mileage: 161 km
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Which thermostat to choose — OEM Audi or Motorcraft?
If choosing thermostat across many manufacturers, check the part ranking. If your choice is down to two brands, the PartReview part comparisons help.
We compare thermostat across these categories:
- PR Score.
- Overall ranking.
- Vote balance.
- Average rating.
- Number of reviews.
- Feature ratings.
- Car owners’ choice.
Which thermostat are better — Motorcraft or OEM Audi?
In March 2026 on PartReview, thermostat OEM Audi were overall better than Motorcraft.
- OEM Audi received a PR Score of 75 out of 100, and Motorcraft scored 74 points.
- OEM Audi ranked 7 in the overall ranking, and Motorcraft ranked 8.
- The average rating is higher for OEM Audi (4) than for Motorcraft (3.9).
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Thermostat OEM Audi have better feature ratings than Motorcraft:
- Overheating - owners believe, that this property for OEM Audi is better than Motorcraft.
- Slow warm-up - drivers claim, that this property for Motorcraft is outperforms OEM Audi.
- Cabin heat - reviews suggest, that this property for Motorcraft is preferred to OEM Audi.
Which thermostat are more popular — OEM Audi or Motorcraft?
In March 2026 on PartReview, thermostat OEM Audi were overall more popular than Motorcraft.
By vote balance, thermostat OEM Audi surpassed Motorcraft:
- For OEM Audi, the ratio of positive (27) to negative (9) votes is 18 votes.
- For Motorcraft, the ratio of positive (23) to negative (8) votes is 15 votes.
By number of reviews, thermostat OEM Audi surpassed Motorcraft:
- For thermostat OEM Audi there are 11 reviews: 7 positive, 3 neutral, 1 negative.
- For thermostat Motorcraft there are 10 reviews: 7 positive, 1 neutral, 2 negative.
Which thermostat do car owners prefer — OEM Audi or Motorcraft?
In March 2026, according to PartReview, thermostat OEM Audi and Motorcraft have not taken top places in car-specific ratings. You can help by adding your review about these manufacturers.
Other comparisons of thermostat
If this comparison didn’t fully answer your question, there are many others on PartReview.
For example, comparisons of thermostat OEM Audi with: MotoRad, Wahler, OEM Volkswagen, Mahle, OEM Mazda, MOPAR, MISHIMOTO, Gates, OEM BMW, OEM Nissan.
Also available: comparisons of thermostat Motorcraft with: MotoRad, Wahler, OEM Volkswagen, Mahle, OEM Mazda, MOPAR, MISHIMOTO, Gates, OEM BMW, OEM Nissan.
You can also see who is better among other thermostat manufacturers: Wahler or MotoRad, OEM Volkswagen or MotoRad, Mahle or MotoRad, OEM Mazda or MotoRad, MOPAR or MotoRad.