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 such as adaptive cruise control, although owners expressed reliability concerns in our 2019 Driver Power customer satisfaction survey.

Mercedes GLC reliability

Looking at the 2021 results of our Driver Power owner satisfaction survey, Mercedes as a brand came in a much-improved 13th place out of 29 manufacturers, a vast improvement over the 28th place finish in 2020. Overall, 18.97% of respondents reported a fault with their cars in the first year of ownership.

In our ownership survey, the GLC finished in 38th place overall from 75 cars, with owners praising its safety technology and design. Running costs were less favourable, though, which includes expensive servicing costs and middling reliability.

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 also 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.

Recommended

New Mercedes GLC Coupe spied
New Mercedes GLC Coupe Spied
Mercedes GLC SUV
15 Jun 2022

New Mercedes GLC Coupe spied

New 2022 Mercedes GLC SUV unveiled
2022 Mercedes GLC Front off side
Mercedes GLC
1 Jun 2022

New 2022 Mercedes GLC SUV unveiled

Mercedes GLC SUV review
Mercedes GLC SUV
Mercedes GLC
2 Mar 2022

Mercedes GLC SUV review

Most Popular

Best new car deals 2022: this week’s top car offers
MG HS
Deals
12 Aug 2022

Best new car deals 2022: this week’s top car offers

Top 10 best electric family cars 2022
MG ZS EV - front
Best cars
8 Aug 2022

Top 10 best electric family cars 2022

Kia EV4 SUV to take on the Volvo XC40 Recharge
2024 Kia EV4 - front
News
5 Aug 2022

Kia EV4 SUV to take on the Volvo XC40 Recharge

Tips & advice

View All
Car dashboard warning lights: the complete guide
Car dashboard symbols and meanings
Tips and advice
23 Mar 2022

Car dashboard warning lights: the complete guide

Electric car charging stations: a complete guide
Electric car charging station
Tips and advice
5 Nov 2021

Electric car charging stations: a complete guide

PCP vs HP – which type of car finance is right for you?
PCP vs HP
Car buying
17 May 2022

PCP vs HP – which type of car finance is right for you?

Average speed cameras: how do they work?
Average speed cameras: how do they work?
Tips and advice
20 Jun 2022

Average speed cameras: how do they work?

Best cars

View All
Top 10 best car interiors 2022
Peugeot 208 hatchback
Best cars
25 Jun 2021

Top 10 best car interiors 2022

Top 10 best electric cars 2022
Ioniq 5
Best cars
12 Jul 2022

Top 10 best electric cars 2022

Top 10 best cheap-to-run cars 2022
Nissan Leaf front
Best cars
12 Jul 2022

Top 10 best cheap-to-run cars 2022

The UK's top 10 fastest hot hatchbacks 2022
Audi RS 3 driving - front view
Hot hatches
24 Jun 2022

The UK's top 10 fastest hot hatchbacks 2022