Thermostat Wahler or MISHIMOTO

PartReview Score

Rank #13 in ranking

-3

2.9

Cabin heat

1.8

Overheating

2.8

Slow warm-up

2.1

No data

PR Score

Ranking

Votes

Reviews

Average rating

Properties

Car

PartReview Score

Rank #14 in ranking

-18

2.2

Overheating

2.7

Slow warm-up

2.8

No data

Reviews

All

Wahler

MISHIMOTO

Wahler › Thermostat

BMWMikeM 21 Dec 2025, 19:59

Rating 5.0

In the past and up to several months ago, I’ve always gone with Saleri (Italy) pumps and Wahler (Germany) thermostats for the M54 and have had great results.

Pros: great results

Wahler › Thermostat

mrkprsn 3 Nov 2025, 15:07

Overheating:

Rating 4.5

I had a wahler thermostat and my temp range was 93-96

Pros: stable temperature range

Vehicle: BMW

Wahler › Thermostat

CetiAlpha4 30 Sep 2025, 20:14

Rating 5.0

I got a Wahler thermostat once who was the OEM maker for MB, the only difference between the Wahler and the old MB one was that there was a spot where the MB logo was, on the Wahler one that logo was gone, looks like it was there, but someone with an angle grinder scratched out the MB logo so it probably came off the same line that made the MB part.

Pros: OEM quality, identical to original

Wahler › Thermostat

_nvisible 25 Sep 2025, 03:14

Overheating:

Rating 5.0

I have had a car not bleed properly/ run hot (but not overheat) only when using the wrong thermostat. Replacing it with Wahler fixed the issue.

Pros: fixed bleeding issue

Vehicle: Porsche

MISHIMOTO › Thermostat

Ben_805 16 Dec 2025, 23:22

Overheating:

Rating 3.0

I spent a good chunk of change on the Mishimoto thermostat and it got stuck closed within a couple months. Needed the car back right away and all I could get was a dirt cheap MotorRad one. Darn thing has been it in now without issue for a good long while now.

Pros: working without issue

Cons: stuck closed quickly

Wahler › Thermostat

TheOnlyQueso 11 Dec 2025, 02:55

Rating 2.0

I recently changed the thermostat on my dad's car as well, I went with a wahler, and I'm observing the same things.

Cons: observing the same things

Wahler › Thermostat

jimjoe21 3 Nov 2025, 05:59

Slow warm-up:
Cabin heat:

Rating 0.5

I decided to try another thermostat, this time a Wahler and nothing has changed as the car will still not get up to temperature and no hot air.

Cons: car not reaching temperature, no hot air

Vehicle: BMW

Wahler › Thermostat

Fiendingas 4 Jun 2025, 06:01

Rating 0.5

I changed on mine 2-3 months ago with a new one from Wahler/Borg Warner and now it's leaking through the connector.

Cons: leaking through connector

Wahler › Thermostat

Fiendingas 28 May 2025, 19:41

Rating 1.5

I have experienced same with Wahler thermostat.

Cons: same problem experienced

Vehicle: BMW

Wahler › Thermostat

superbetaz 26 May 2025, 15:57

Overheating:

Rating 1.5

I’ve replaced it twice and it starts leaking from there in about 2000 miles or so. I’m willing to bet that thermostat is a Wahler brand. They are known to leak like this.

Cons: leaks after 2000 miles

Vehicle: BMW

Mileage: 3218 km

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Which thermostat to choose — Wahler or MISHIMOTO?

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:

Comparison of thermostat Wahler and MISHIMOTO

PR Score.
Overall ranking.
Vote balance.
Average rating.
Number of reviews.
Feature ratings.
Car owners’ choice.

Which thermostat are better — MISHIMOTO or Wahler?

In March 2026 on PartReview, thermostat Wahler were overall better than MISHIMOTO.

Wahler received a PR Score of 48 out of 100, and MISHIMOTO scored 32 points.
Wahler ranked 13 in the overall ranking, and MISHIMOTO ranked 14.
The average rating is higher for Wahler (2.9) than for MISHIMOTO (2.2).
Thermostat Wahler have better feature ratings than MISHIMOTO:
- Slow warm-up - owners believe, that this property for MISHIMOTO is better than Wahler.
- Cabin heat - drivers claim, that this property for Wahler is outperforms MISHIMOTO.
- Overheating - reviews suggest, that this property for Wahler is preferred to MISHIMOTO.

Which thermostat are more popular — Wahler or MISHIMOTO?

In March 2026 on PartReview, thermostat Wahler were overall more popular than MISHIMOTO.

By vote balance, thermostat Wahler surpassed MISHIMOTO:

For Wahler, the ratio of positive (41) to negative (44) votes is -3 votes.
For MISHIMOTO, the ratio of positive (16) to negative (34) votes is -18 votes.

By number of reviews, thermostat Wahler surpassed MISHIMOTO:

For thermostat Wahler there are 28 reviews: 13 positive, 1 neutral, 14 negative.
For thermostat MISHIMOTO there are 16 reviews: 4 positive, 2 neutral, 10 negative.

Which thermostat do car owners prefer — Wahler or MISHIMOTO?

In March 2026, according to PartReview, thermostat Wahler and MISHIMOTO 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 Wahler with: MotoRad, OEM Volkswagen, Mahle, OEM Mazda, MOPAR, Gates, OEM BMW, OEM Nissan, OEM Audi, Duralast.

Also available: comparisons of thermostat MISHIMOTO with: MotoRad, OEM Volkswagen, Mahle, OEM Mazda, MOPAR, Gates, OEM BMW, OEM Nissan, OEM Audi, Duralast.

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.