Should I buy a 2020 Mercedes-Benz GLA-Class 1.3 Petrol Automatic?

Explore common problems, estimated repair costs and practical checks for the 2020 Mercedes-Benz GLA-Class 1.3 Petrol Automatic. Use this guide to help assess a used car, then unlock a personalised report for the exact vehicle you're considering.

Common problems

1High Likelihood

Fuel rail to injector leak risk

Petrol smell around the bonnet area, rough running, misfire light, or in some cases few obvious warnings before a leak is found.

How to check

Start it from cold, let it idle for a minute, then drive gently with the windows down before stopping and stepping out at the front corner.

Estimated Repair Cost

£1,800

2High Likelihood

Coolant thermostat housing leak

Coolant level dropping between services, sweet smell after parking, dried pink or white residue in the engine bay, or temperature warnings.

How to check

Drive until fully warm, let it idle, then switch off and wait a minute before opening the bonnet area visually.

Estimated Repair Cost

£450

3High Likelihood

Infotainment screen reboot or communication faults

Screen going black, repeated rebooting, navigation or media dropping out, or functions returning after a restart.

How to check

Use navigation, radio, phone connection and steering-wheel controls during a 10-15 minute drive over mixed roads.

Estimated Repair Cost

£450

MOT Failure Rate

0%10%20%30%40%0–20,000 miles: 4.7% (17 failed / 361 tests)20,000–40,000 miles: 9.2% (68 failed / 737 tests)40,000–60,000 miles: 12.6% (31 failed / 246 tests)60,000–80,000 miles: 15.9% (10 failed / 63 tests)80,000–100,000 miles: 14.3% (2 failed / 14 tests)100,000–120,000 miles: 25.0% (1 failed / 4 tests)120,000–140,000 miles: 33.3% (1 failed / 3 tests)020k40k60k80k100k120k140k160k180k200kMilesFailure rate
2020 Mercedes-Benz GLA-Class 1.3 Petrol Automatic

Mercedes-Benz GLA-Class buying questions

Is a 2020 Mercedes-Benz GLA-Class worth buying?

It can be, but only if the individual car backs it up. For the 2020 Mercedes-Benz GLA-Class 1.3 Petrol Automatic, treat model-level patterns as viewing priorities and let condition, history and inspection evidence decide.

What common problems affect the Mercedes-Benz GLA-Class (2020)?

The problem cards above list the model-level checks for this guide. Read them as priorities for inspection and paperwork review, not proof that every example will have those faults.

What should I check before buying a Mercedes-Benz GLA-Class?

Look for evidence, not just assurances: MOT advisories, service history, repair invoices, warning lights, fluid leaks, tyre and brake condition, and how the car behaves on a proper test drive. And of course, look at your personalised Should I Buy This Car? report, outlining a full list of common issues in detail, a personalised road test, a plain-English explanation and a MotorIQ score.

A model guide is useful. A report on its registration is better.

The guide above gives you the model-level pattern. A personalised MotorIQ report checks the registration-specific record and turns it into an ownership view before you commit.

Or enter the vehicle manually