Should I buy a 2015–2018 Ford Focus 2.0 Diesel Manual Mk3.5?

Explore common problems, estimated repair costs and practical checks for the 2015–2018 Ford Focus 2.0 Diesel Manual Mk3.5. Use this guide to help assess a used car, then unlock a personalised report for the exact vehicle you're considering.

Common problems

1Moderate Likelihood

DPF cracking or repeated blockage

Amber engine or emissions warning, fan running after shutdown, poor pull above mid revs, rising fuel use, or limp mode.

How to check

Warm it fully, then drive at steady A-road speed and follow with a few firm accelerations.

Estimated Repair Cost

£350

2High Likelihood

Fuel injector failure or poor injector performance

Long cranking, uneven idle, misfire under load, grey or white smoke when cold, or a sudden loss of power.

How to check

Start it from cold if possible, let it idle, then accelerate gently and firmly through the mid-range.

Estimated Repair Cost

£1,200

3High Likelihood

Boot well water ingress from rear vents or body seams

Steamed-up rear windows, musty smell, damp boot carpet, water in the spare-wheel well or droplets behind the rear trim after rain.

How to check

Open the boot after the drive and lift the floor panel and side trim edges by hand.

Estimated Repair Cost

£350

MOT Failure Rate

0%10%20%30%0–20,000 miles: 6.9% (338 failed / 4,912 tests)20,000–40,000 miles: 11.3% (3,238 failed / 28,719 tests)40,000–60,000 miles: 14.7% (4,978 failed / 33,960 tests)60,000–80,000 miles: 17.8% (4,826 failed / 27,098 tests)80,000–100,000 miles: 19.8% (3,195 failed / 16,124 tests)100,000–120,000 miles: 21.6% (1,673 failed / 7,738 tests)120,000–140,000 miles: 22.1% (663 failed / 3,000 tests)140,000–160,000 miles: 21.6% (234 failed / 1,082 tests)160,000–180,000 miles: 24.6% (103 failed / 418 tests)180,000–200,000 miles: 26.5% (43 failed / 162 tests)020k40k60k80k100k120k140k160k180k200kMilesFailure rate
2015–2018 Ford Focus 2.0 Diesel Manual Mk3.5

Ford Focus buying questions

Is a 2015–2018 Ford Focus worth buying?

It can be, but only if the individual car backs it up. For the 2015–2018 Ford Focus 2.0 Diesel Manual Mk3.5, treat model-level patterns as viewing priorities and let condition, history and inspection evidence decide.

What common problems affect the Ford Focus (2015–2018)?

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 Ford Focus?

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