Thermostat OEM BMW or OEM Mazda

PartReview Score

Rank #9 in ranking

3.1

Cabin heat

3.0

Overheating

3.8

Slow warm-up

3.1

No data

PR Score

Ranking

Votes

Reviews

Average rating

Properties

Car

PartReview Score

Rank #11 in ranking

3.1

Cabin heat

2.0

Overheating

3.3

Slow warm-up

2.3

No data

Reviews

All

OEM BMW

OEM Mazda

OEM Mazda › Thermostat

whofladanger 23 Dec 2025, 00:29

Rating 4.0

I narrowed it down to a bad thermostat and bad radiator. I ordered the OEM Mazda parts for $450.00

Pros: OEM parts

Cons: bad thermostat

OEM BMW › Thermostat

Valhallacomes 13 Dec 2025, 13:22

Rating 4.0

The gasket looks fine. Normal procedure would be to buy a new one from BMW. always go OEM with the thermostat, there's a lot of shit knockoffs.

Cons: shit knockoffs

OEM BMW › Thermostat

OkSheepherder1565 21 Nov 2025, 18:05

Overheating:

Rating 4.0

I recently moved on from a 2016 X3 35i (N55) with a little over 100k miles on it. The only things to break on it were the thermostat and a control board for one of the headlight modules. When I replaced the thermostat I did the water pump as a precaution.

Pros: only consumables

Cons: thermostat broke

Vehicle: BMW X3

Mileage: 160934 km

OEM Mazda › Thermostat

Affectionate-Panic-1 17 Nov 2025, 18:04

Slow warm-up:

Rating 4.0

Some of the newer Mazda Skyactives have thermostat issues, but it's a minor problem (only symptom is taking longer to warm up) and Mazda extended the warranty on them. It's the only issue I've brought the car to the dealer for on my 21 Mazda 3 without roughly 50k on it.

Pros: minor problem, extended warranty

Cons: thermostat issues

Vehicle: Mazda

Mileage: 50000 km

OEM BMW › Thermostat

yello_downunder 8 Jan 2026, 05:50

Overheating:

Rating 3.0

Notice the radiator is leaking. Replace that. Car still not happy, cooling fans on full blast. Codes point to a thermostat, but the radiator hoses get warm. In my pea brain thermostats don't normally just sometimes go bad, they're typically either all broke or not broke. Ordered a thermostat from Trumplandia anyways.

Cons: expensive, complex design

Vehicle: BMW

OEM Mazda › Thermostat

Used-Phone5715 10 Nov 2025, 23:57

Slow warm-up:

Rating 3.0

I have the ‘19 CX-5, live in NH. Seems normal to me, when it’s below zero outside and the at idle, it should not be hot. Warm after 5-10 yes, but not warm as it would be after driving for 10 minutes.

Pros: Warm after 5-10

Cons: not hot at idle

Vehicle: Mazda

OEM Mazda › Thermostat

Actual_Muffin_1157 27 Jan 2026, 05:20

Cabin heat:

Rating 2.0

Batteries crap and so is the thermostat / heat and the trim on the steering wheel and gear shifter is thin and cheap and will come off everything else. Car is great

Pros: car is great (overall)

Cons: crap battery, cheap thermostat, trim comes off

Vehicle: Mazda

OEM Mazda › Thermostat

Right_Illustrator_10 26 Jan 2026, 22:49

Overheating:

Rating 2.0

I just got this fixed at the dealer on my 21. Its the thermostat. They put in over a million bad ones and don't want to own it with a recall so they sent out a TSB. There's also an extended warranty for all the cars for this part/labor.

Pros: fixed at dealer, extended warranty

Cons: defective part, no recall

Vehicle: Mazda

OEM Mazda › Thermostat

MathematicianRude809 26 Jan 2026, 21:16

Slow warm-up:
Cabin heat:

Rating 1.0

I replace thermostat even the whole block. Same issue. This fucking car don’t heat.

Cons: car doesn't heat, same issue

Vehicle: Mazda

OEM Mazda › Thermostat

Disco-Rollercoaster 4 Dec 2025, 20:18

Overheating:

Rating 1.0

That's due to their faulty thermostat for which they don't want to assume responsibility and call it what it is - a recall.

Cons: faulty thermostat

1 2 3 4

Write your review

Help others - share your experience with this part.

Part:

Manufacturer:

Make:

Model:

Generation:

Review tone

Positive Negative Neutral

Reviews found: 0

Voted AGAINST engine oil RAVENOL on the rating page

The brake pads Motorcraft has only 4 reviews. Maybe add one more?

The brake fluid OEM Subaru has only 2 reviews. Maybe add one more?

The brake pads Detroit Axle has only 8 reviews. Maybe add one more?

The brake pads OEM Alfa Romeo got the first review!

The brake caliper OEM BMW got the first review!

The brake pads OEM Infiniti got the first review!

For wiper blades PIAA already 100 reviews.

For battery Energizer already 25 reviews.

In the rating best water pump already 12 brands participate!

In the rating best timing belt already 13 brands participate!

In the rating best head gasket already 3 brands participate!

In the auto rating oil filter for Volkswagen Passat already 5 brands participate!

In the auto rating brake pads for Mazda 5 already 10 brands participate!

In the auto rating tires for Subaru Outback already 50 brands participate!

The glow plug Autolite has only 10 votes! Recommend it?

The fender OEM Volkswagen has only 10 votes! Recommend it?

The brake discs Tesla has only 10 votes! Recommend it?

For cabin filter Fram already 25 reviews.

In the rating best flywheel only 4 brands. Do you know another one?

The brake pads OEM Subaru already has 250 votes!

The engine oil AMSOIL already has 1000 votes!

In the rating best CVT transmission only 4 brands. Do you know another one?

The engine radiator MISHIMOTO already has 300 votes!

Voted AGAINST engine oil RED LINE on the rating page

Voted AGAINST engine oil PENNZOIL on the rating page

Other comparisons

Thermostat Wahler or MotoRad

Thermostat OEM Volkswagen or MotoRad

Thermostat Mahle or MotoRad

Thermostat OEM Mazda or MotoRad

Thermostat MOPAR or MotoRad

Thermostat MISHIMOTO or MotoRad

Thermostat Wahler or OEM Volkswagen

Thermostat Gates or MotoRad

Show all

Which thermostat to choose — OEM BMW or OEM Mazda?

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 OEM BMW and OEM Mazda

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

Which thermostat are better — OEM Mazda or OEM BMW?

In March 2026 on PartReview, thermostat OEM BMW were overall better than OEM Mazda.

OEM BMW received a PR Score of 60 out of 100, and OEM Mazda scored 54 points.
OEM BMW ranked 9 in the overall ranking, and OEM Mazda ranked 11.
The average rating is higher for OEM Mazda (3.1) than for OEM Mazda (3.1).

Which thermostat are more popular — OEM BMW or OEM Mazda?

Thermostat OEM BMW and OEM Mazda were equally popular according to data in March 2026.

By vote balance, thermostat OEM BMW surpassed OEM Mazda:

For OEM BMW, the ratio of positive (26) to negative (17) votes is 9 votes.
For OEM Mazda, the ratio of positive (35) to negative (29) votes is 6 votes.

By number of reviews, thermostat OEM Mazda surpassed OEM BMW:

For thermostat OEM BMW there are 14 reviews: 8 positive, 1 neutral, 5 negative.
For thermostat OEM Mazda there are 20 reviews: 9 positive, 4 neutral, 7 negative.

Which thermostat do car owners prefer — OEM BMW or OEM Mazda?

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

Also available: comparisons of thermostat OEM Mazda with: MotoRad, Wahler, OEM Volkswagen, Mahle, MOPAR, MISHIMOTO, Gates, 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.