What's the life span of the thermostat

Asked by Jun 22, 2015 at 01:45 PM about the 2004 BMW 3 Series 325xi

Question type: Maintenance & Repair

Took my car in with the engine light on and was told the thermostat need changing.  Done that.  Now 2 years later took it in with the same problem and told the same thing and have it replace with gasket and all.  Did I have a faulty thermostat in the 1st replacement or the workmanship.  1st replacement was at 65,000+ km, now it has 85,000 km.  Shouldn't the thermostat last longer than 20,000km?

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61,215

Yes it should last longer,but that said all depends on the other coolant system component,s operating right,meaning water pump,and radiator,may need to have them checked.

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