Should I buy a 2016–2018 Mercedes-Benz A-Class 1.5 Diesel Automatic W176 facelift?

Explore common problems, estimated repair costs and practical checks for the 2016–2018 Mercedes-Benz A-Class 1.5 Diesel Automatic W176 facelift. 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

Automatic gearbox hesitation, jolting and limp mode

Jerky pull-away, delayed response selecting drive or reverse, or a gearbox warning with reduced performance.

How to check

Pull away gently from a stop, then creep in traffic pace and select reverse after a short pause.

Estimated Repair Cost

£1,200

2Moderate Likelihood

AdBlue and NOx sensor faults

Engine light, AdBlue warning, 'cannot measure level' message, or a countdown warning before restart is blocked.

How to check

Start the car from cold and watch the dash through idle and the first few minutes of driving.

Estimated Repair Cost

£800

3Moderate Likelihood

Sunroof or panoramic roof drain leaks

Wet headlining, damp A-pillars, water marks near the roof opening, soaked footwells or heavy condensation after rain.

How to check

Open the roof blind, run the roof through its normal movement if fitted, then smell the cabin and feel around the headlining edges and upper pillar trim.

Estimated Repair Cost

£600

MOT Failure Rate

0%10%20%30%0–20,000 miles: 9.4% (2,377 failed / 25,270 tests)20,000–40,000 miles: 12.4% (13,814 failed / 111,373 tests)40,000–60,000 miles: 15.4% (17,424 failed / 112,967 tests)60,000–80,000 miles: 18.8% (13,812 failed / 73,340 tests)80,000–100,000 miles: 21.0% (7,210 failed / 34,292 tests)100,000–120,000 miles: 23.0% (2,953 failed / 12,846 tests)120,000–140,000 miles: 24.5% (1,083 failed / 4,425 tests)140,000–160,000 miles: 23.6% (368 failed / 1,557 tests)160,000–180,000 miles: 23.8% (119 failed / 499 tests)180,000–200,000 miles: 26.6% (50 failed / 188 tests)020k40k60k80k100k120k140k160k180k200kMilesFailure rate
2016–2018 Mercedes-Benz A-Class 1.5 Diesel Automatic W176 facelift

Mercedes-Benz A-Class buying questions

Is a 2016–2018 Mercedes-Benz A-Class worth buying?

It can be, but only if the individual car backs it up. For the 2016–2018 Mercedes-Benz A-Class 1.5 Diesel Automatic W176 facelift, treat model-level patterns as viewing priorities and let condition, history and inspection evidence decide.

What common problems affect the Mercedes-Benz A-Class (2016–2018)?

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