The 2018 draws 2.7 complaints per run and the 2016 1, a 2.7-fold gap within the same model. Half of all complaints arrive by 4 years of age, so 52.9% land after the 4-year basic warranty ends. The system owners report most is Engine, with 81 complaints, typically at 4.2 years.
Mercedes-Benz GLC-Class years to avoid — and the best ones
| Model year | Per run | Complaints | Runs | Enough history? |
|---|---|---|---|---|
| 2023 | 31 | 19 | too new | |
| 2022 | 26 | 17 | too new | |
| 2020 | 68 | 39 | yes | |
| 2019 | 50 | 31 | yes | |
| 2018 | 89 | 33 | yes | |
| 2017 | 13 | 9 | yes | |
| 2016 | 5 | 5 | yes |
Does the market discount it? In our listings a 2018 GLC-Class asks a median $15,998, against $16,894 for a 2019, the next model year: about 5% less, so sellers do price some of the trouble in.
Among the 5 Mercedes-Benz GLC-Class years with enough history, the three to walk away from are 2018, 2020, 2019; the three worth hunting are 2016, 2017, 2019.
When it starts to break
| Age at failure | Complaints | Running total | Warranty |
|---|---|---|---|
| 0 years | 11.2% | covered | |
| 1 year | 22.5% | covered | |
| 2 years | 32.2% | covered | |
| 3 years | 47.1% | covered | |
| 4 years | 60.9% | you pay | |
| 5 years | 83% | you pay | |
| 6 years | 93.8% | you pay | |
| 7 years | 98.9% | you pay | |
| 8 years | 100% | you pay |
Basic warranty on this car is 4 years / 50,000 miles. Only 47.1% of reported failures happen inside it — the remaining 52.9% come out of the owner's pocket. Powertrain cover (4 years / 50,000 miles) reaches further, but it only covers the engine and transmission, which account for about 38% of the complaints here.
What actually fails — and at what age
On the Mercedes-Benz GLC-Class, the early trouble is Unknown Or Other and Electrical System — reported at around 3.4 years, so a car still under warranty is the one to check for it. What waits further out is Engine at 4.2 years — past every basic warranty, and the bill lands on whoever owns the car then.
| System | Complaints | Typical age | Crash | Fire |
|---|---|---|---|---|
| Engine | 4.2 yrs | 1 | 6 | |
| Unknown Or Other | 3.4 yrs | 5 | 1 | |
| Electrical System | 3.1 yrs | 5 | 6 | |
| Power Train | 3.5 yrs | 1 | — | |
| Fuel/propulsion System | 3.7 yrs | 1 | 1 | |
| Service Brakes | 1.2 yrs | 4 | — | |
| Structure | 3.4 yrs | 1 | 4 | |
| Forward Collision Avoidance | 2.9 yrs | 2 | — |
Good year or bad year — the VIN settles it.
- Check any VIN against complaints for its exact build year and plant
- Exact value for that car, adjusted for its mileage
- Full research report as a PDF you can hand to a mechanic
- Alerts if a recall lands on a car in your garage
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Frequently asked questions
Is the Mercedes-Benz GLC-Class reliable?
By complaints per production run it is better than typical: 1.86 against 3.73 for the average car.
Which GLC-Class years should you avoid?
By complaints per production run, 2018, 2020, 2019. The cleanest years old enough to judge are 2016, 2017, 2019. Years newer than 6 are left out: complaints keep arriving for years after a car is sold.
When do GLC-Class problems usually start?
Half of all complaints arrive by 4 years of age. The most reported system is Engine, typically at 4.2 years, followed by Unknown Or Other.
Will the warranty cover GLC-Class problems?
Mostly not: basic cover is 4 years / 50,000 miles, and only 47.1% of reported failures fall inside it. Powertrain cover lasts longer, but engine and transmission make up about 38% of the complaints here.
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