Should I buy a 2015–2018 BMW 3-Series 2.0 Diesel Automatic F30 LCI?

Explore common problems, estimated repair costs and practical checks for the 2015–2018 BMW 3-Series 2.0 Diesel Automatic F30 LCI. 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

EGR cooler internal leak and repeat EGR contamination

Coolant level drops without an obvious puddle, cold-start roughness, sweet smell, or smoke/fumes from the rear of the engine bay.

How to check

Start it from cold, let it idle, then drive until fully warm and stop with the bonnet open.

Estimated Repair Cost

£900

2Moderate Likelihood

Automatic gearbox slip, shudder or delayed engagement

A pause before moving off, flare in revs under load, shunt when parking, or a drivetrain warning after hard acceleration.

How to check

From cold and again when warm, select drive and reverse, creep in traffic, then accelerate firmly once the gearbox is hot.

Estimated Repair Cost

£650

3High Likelihood

EGR valve and intake carbon buildup

Hesitation, uneven idle, flat response at low revs, or recurring airflow/EGR fault codes after town driving.

How to check

Let it idle, then accelerate gently from low revs in a higher gear once warm.

Estimated Repair Cost

£500

MOT Failure Rate

0%10%20%30%0–20,000 miles: 5.8% (535 failed / 9,267 tests)20,000–40,000 miles: 9.3% (5,360 failed / 57,839 tests)40,000–60,000 miles: 12.1% (9,327 failed / 77,350 tests)60,000–80,000 miles: 14.5% (10,204 failed / 70,396 tests)80,000–100,000 miles: 16.5% (8,531 failed / 51,804 tests)100,000–120,000 miles: 18.1% (5,724 failed / 31,550 tests)120,000–140,000 miles: 19.2% (3,224 failed / 16,782 tests)140,000–160,000 miles: 19.3% (1,576 failed / 8,168 tests)160,000–180,000 miles: 20.8% (813 failed / 3,906 tests)180,000–200,000 miles: 21.0% (338 failed / 1,611 tests)020k40k60k80k100k120k140k160k180k200kMilesFailure rate
2015–2018 BMW 3-Series 2.0 Diesel Automatic F30 LCI

BMW 3-Series buying questions

Is a 2015–2018 BMW 3-Series worth buying?

It can be, but only if the individual car backs it up. For the 2015–2018 BMW 3-Series 2.0 Diesel Automatic F30 LCI, treat model-level patterns as viewing priorities and let condition, history and inspection evidence decide.

What common problems affect the BMW 3-Series (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 BMW 3-Series?

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