Mercedes 300's have a very good reliability rating of 712/999. The score was a mathematical result of the average score of every Mercedes 300 that has had a registered MOT. Mercedes 300's reliability review's are reflected in the score. Click here to see how we calculate each score.

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We calculated all of the below figures by getting the score from each vehicle make/model/year/fuel, which are each calculated a score. We then generate the average score from those.

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