Should I buy a 2014 Mercedes-Benz CLA-Class 2.1 Diesel Automatic?

Explore common problems, estimated repair costs and practical checks for the 2014 Mercedes-Benz CLA-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

DPF blocking and failed regenerations

DPF or engine warning light, reduced power, frequent fan running after trips, poor fuel economy, or limp mode.

How to check

Drive until fully warm, then accelerate firmly from 30-50mph and again from 50-70mph if conditions allow.

Estimated Repair Cost

£1,200

2High Likelihood

Automatic gearbox jerkiness and clutch wear

Jerky pull-away, hesitation at roundabouts, shunting as it stops, or slipping/over-revving when warm.

How to check

Creep in traffic, slow for a roundabout, then accelerate away gently and again more decisively.

Estimated Repair Cost

£2,000

3Moderate Likelihood

Diesel dilution of engine oil

Oil level rising between services, diesel smell on the dipstick, rough running, or repeated emissions warnings.

How to check

This usually needs service-history scrutiny, oil-level checking and diagnostics rather than a short drive.

Estimated Repair Cost

£900

MOT Failure Rate

0%10%20%30%0–20,000 miles: 7.0% (60 failed / 855 tests)20,000–40,000 miles: 11.8% (515 failed / 4,374 tests)40,000–60,000 miles: 14.4% (812 failed / 5,632 tests)60,000–80,000 miles: 18.4% (995 failed / 5,417 tests)80,000–100,000 miles: 21.3% (939 failed / 4,410 tests)100,000–120,000 miles: 21.9% (577 failed / 2,635 tests)120,000–140,000 miles: 23.1% (326 failed / 1,409 tests)140,000–160,000 miles: 24.1% (158 failed / 655 tests)160,000–180,000 miles: 23.0% (67 failed / 291 tests)180,000–200,000 miles: 24.0% (18 failed / 75 tests)020k40k60k80k100k120k140k160k180k200kMilesFailure rate
2014 Mercedes-Benz CLA-Class 2.1 Diesel Automatic

Mercedes-Benz CLA-Class buying questions

Is a 2014 Mercedes-Benz CLA-Class worth buying?

It can be, but only if the individual car backs it up. For the 2014 Mercedes-Benz CLA-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 CLA-Class (2014)?

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 CLA-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