In-depth Reviews

Mercedes C-Class saloon - Reliability & safety

The Mercedes C-Class should be very safe, thanks to loads of clever tech

Carbuyer Rating

4.2 out of 5

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Owners Rating

3.0 out of 5

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Reliability & safety Rating

4.5 out of 5

The Mercedes C-Class is a very safe car and offers a lot of safety kit as standard, with even more optional kit should you want it. The engines have already proved their reliability, so you shouldn’t run into too much trouble years down the line.

Mercedes C-Class reliability

The Mercedes C-Class was rated 74th out of the top 100 models in our 2019 Driver Power owner satisfaction survey but didn't appear in 2020's results. Of the owners who responded, 15% reported experiencing a problem with their car at least once, with the electrics most often at fault.

Mercedes performance as a manufacturer may be cause for concern, coming 28th out of 30 brands overall. Part of this may be down to the higher expectations Mercedes customers have, but 16.5% of respondents reported one or more faults within the first year.


No matter which model you choose, all Mercedes C-Class have a huge range of safety features, including Attention Assist (which warns the driver when they need to take a rest) and Collision Prevention Assist (which can warn of an imminent potential crash).

A tyre-pressure monitor, automatic headlights, cruise control and a reversing camera are also included. With all those safety features, it's no surprise that the C-Class was awarded the maximum five-star rating when it was crash-tested by Euro NCAP. It earned 90% for adult occupant protection and 84% for child protection. The BMW 3 Series only pips it in this area with a slightly higher adult protection score of 95%.

If you want even more safety features, Sport Edition and AMG Line Edition models can also be specified with the Driving Assistance pack. This adds features such as adaptive cruise control (which matches the speed of the car in front), a blind-spot warning sensor and lane-keeping assistance, which is able to gently steer the car back into its lane if you drift out.

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