In-depth reviews

Mercedes GLC SUV - Reliability & safety

There’s an impressive amount of safety technology as standard, but there could be questions about long-term reliability of the Mercedes GLC

Carbuyer Rating

3.8 out of 5

Owners Rating

3.7 out of 5

Read owner reviews
Reliability & safety Rating

3.0 out of 5

The Mercedes GLC has an impressive suite of safety kit, which can be added to with optional equipment like adaptive cruise control. Although owners expressed reliability concerns in our 2019 Driver Power customer satisfaction survey.

Mercedes GLC reliability

Looking at the 2020 results of our Driver Power owner satisfaction survey, Mercedes as a brand came a disappointing 28th out of 30 manufacturers, with 16.5% of respondents reporting a fault within the first year of ownership.

Things were even worse for the Mercedes GLC in particular, because despite coming a reasonable 61st out of our top 100 cars overall in our 2019 results, it came dead last for reliability. A worrying 44% of owners reported at least one fault in the first 12 months, including engine, electrical and interior trim problems. The GLC didn't appear in our 2020 results. Hopefully Mercedes will have identified these teething problems and recified them as part of the model's facelift.

Safety

Along with the standard spread of airbags and traction control, the GLC has an advanced stability program, Mercedes’ crosswind-assistance technology and a collision-prevention system. An optional semi-autonomous driving system is available. This takes adaptive cruise control a step further, maintaining a safe distance from the car in front, steering the car if you drift out of your lane and braking automatically if it detects an imminent collision.

All this led to the Mercedes GLC scoring the full five stars when it was crash-tested by Euro NCAP at the end of 2015. It scored an impressive 95% in the adult occupant protection category, as well as 89% in the child occupant protection category.

The collision-prevention technology can get a little over-zealous, as it tends to flash a warning at you even when you’re a safe distance behind the car in front. Fortunately, it’s relatively easy to deactivate if you find it to be more of a hindrance than a help when on the move.

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