How much does it cost to replace an oxygen sensor?

Mercedes have diagnosed a failed oxygen sensor on my diesel E-Class (2010 model) and suggested replacing it would cost around £500. This seems very high to me. What would you consider a sensible price for this work?

Asked on 30 March 2021 by Jazz09

Answered by Dan Powell
I'd expect to pay £350-£450 at a dealer. However, given the car is 10+ years old, I'd recommend using a local independent Mercedes-Benz specialist (you'll pay £100 less).
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