Should I buy a 2015 Mercedes-Benz GLA-Class 2.1 Diesel Automatic?

Explore common problems, estimated repair costs and practical checks for the 2015 Mercedes-Benz GLA-Class 2.1 Diesel 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

EGR valve and cooler clogging

Engine light, sluggish acceleration, uneven running, or limp-home behaviour after town use.

How to check

Warm the engine fully, then accelerate gently and again more firmly from low revs.

Estimated Repair Cost

£800

2High Likelihood

DPF blocking and failed regeneration

Cooling fan running after switch-off, hot smell, poor fuel economy, warning lights, or reduced power.

How to check

Drive until warm, then accelerate steadily through the mid-range and let it idle after stopping.

Estimated Repair Cost

£1,200

3High Likelihood

Water ingress from panoramic roof drains or rear body vents

Musty smell, persistent condensation, damp carpets, wet boot floor, or unexplained electrical oddities after rain.

How to check

Use the ventilation, then drive with the cabin closed and note the smell and how quickly the glass mists.

Estimated Repair Cost

£600

MOT Failure Rate

0%10%20%30%0–20,000 miles: 6.3% (260 failed / 4,151 tests)20,000–40,000 miles: 9.4% (1,837 failed / 19,465 tests)40,000–60,000 miles: 12.7% (2,737 failed / 21,484 tests)60,000–80,000 miles: 17.1% (2,723 failed / 15,891 tests)80,000–100,000 miles: 20.2% (1,774 failed / 8,767 tests)100,000–120,000 miles: 22.6% (801 failed / 3,538 tests)120,000–140,000 miles: 22.7% (265 failed / 1,169 tests)140,000–160,000 miles: 23.5% (92 failed / 392 tests)160,000–180,000 miles: 25.4% (32 failed / 126 tests)180,000–200,000 miles: 27.3% (12 failed / 44 tests)020k40k60k80k100k120k140k160k180k200kMilesFailure rate
2015 Mercedes-Benz GLA-Class 2.1 Diesel Automatic

Mercedes-Benz GLA-Class buying questions

Is a 2015 Mercedes-Benz GLA-Class worth buying?

It can be, but only if the individual car backs it up. For the 2015 Mercedes-Benz GLA-Class 2.1 Diesel 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 (2015)?

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