How does it cost to replace a BMW belt tensioner?

Replacing a belt tensioner in a BMW can vary in cost depending on the model and year of the vehicle, as well as the specific tensioner that needs to be replaced. As a general estimate, replacing a belt tensioner in a BMW could cost between $150 and $350 for the parts and labor. It's worth noting that this cost can vary depending on factors such as the mechanic's hourly rate, the complexity of the repair, and the availability of parts.