Should I buy a 2018–2022 Mercedes-Benz A-Class 1.3 Petrol Automatic W177?

Explore common problems, estimated repair costs and practical checks for the 2018–2022 Mercedes-Benz A-Class 1.3 Petrol Automatic W177. 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

Fuel smell from the engine bay, rough running, warning light, or visible dampness around the top of the engine.

How to check

Start it from cold, let it idle with the bonnet open afterwards, then stand by the front of the car for a minute.

Estimated Repair Cost

£900

2High Likelihood

Jerky low-speed automatic behaviour

Hesitation pulling away, a sudden grab when selecting drive or reverse, or awkward stop-start crawling in traffic.

How to check

Pull away gently several times, then creep in traffic pace and do a few forward-reverse parking manoeuvres.

Estimated Repair Cost

£1,800

3High Likelihood

MBUX screen blackouts and rebooting

The centre display stays black, restarts repeatedly, loses camera display, or leaves media and settings unavailable.

How to check

Start the car from cold, use navigation, media and camera functions, then switch off and restart it once more.

Estimated Repair Cost

£900

MOT Failure Rate

0%10%20%30%0–20,000 miles: 6.5% (3,130 failed / 48,201 tests)20,000–40,000 miles: 10.3% (9,891 failed / 95,720 tests)40,000–60,000 miles: 13.7% (5,685 failed / 41,486 tests)60,000–80,000 miles: 15.1% (1,582 failed / 10,492 tests)80,000–100,000 miles: 16.9% (414 failed / 2,455 tests)100,000–120,000 miles: 14.9% (80 failed / 537 tests)120,000–140,000 miles: 20.3% (30 failed / 148 tests)140,000–160,000 miles: 9.4% (3 failed / 32 tests)160,000–180,000 miles: 25.0% (4 failed / 16 tests)180,000–200,000 miles: 9.1% (1 failed / 11 tests)020k40k60k80k100k120k140k160k180k200kMilesFailure rate
2018–2022 Mercedes-Benz A-Class 1.3 Petrol Automatic W177

Mercedes-Benz A-Class buying questions

Is a 2018–2022 Mercedes-Benz A-Class worth buying?

It can be, but only if the individual car backs it up. For the 2018–2022 Mercedes-Benz A-Class 1.3 Petrol Automatic W177, treat model-level patterns as viewing priorities and let condition, history and inspection evidence decide.

What common problems affect the Mercedes-Benz A-Class (2018–2022)?

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 A-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