Don't touch any tank that's not BMW original - nobody aftermarket can be trusted any more after Mahle went to China.
Cons: unreliable aftermarket, poor quality
Vehicle:
BMW
Reviews of Mahle expansion tank
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Hatte letztes Jahr einen neuen Ausgleichsbehälter für meinen E36 gekauft, der einfach nicht gepasst hat. War nicht dicht zu bekommen, egal was man getan hat. Es hat jedesmal bei der Montage den O-Ring verschoben, weil der Behälter einfach nicht ordentlich gefertigt war.
Cons: nicht dicht zu bekommen
Vehicle:
BMW
I have a newish expansion tank and cap from Mahle. I think my cap is from the premium line but the inside colouring underneath the cap is already washed off and the plastic feel and finish of the expansion tank seems a bit lacking. However I have completed 10k in it now and no problems whatsoever.
Pros: no problems
Cons: poor finish
Mileage: 10000 km
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What we know about Mahle expansion tank
The brand is registered in Germany. Official website: http://www.mahle.com/.
In March 2026, PartReview does not yet have a formed opinion of Mahle expansion tank. You can help by adding a review for Mahle expansion tank.
Currently there are 3 reviews and 9 votes. Average rating — 2 out of 5. Vote balance: 3 up, 6 down.
Users also evaluated the qualities of Mahle expansion tank:
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- No leaks - cap and seams stay dry - rated negatively. 2.1 points out of 5.
- No coolant smell - no sweet odor around the engine bay - no rating yet
Expansion tank Mahle in car-specific ratings
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