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Should I buy a 2017 Audi A5 2.0 Diesel Manual B9?

Explore common problems, estimated repair costs and practical checks for the 2017 Audi A5 2.0 Diesel Manual B9. 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

AdBlue / SCR system faults causing countdown-to-no-start

AdBlue warning, engine light, yellow spanner, or a mileage countdown saying the engine will not restart.

How to check

Read fault codes first.

Estimated Repair Cost

£1,200

2Moderate Likelihood

DPF blockage and differential-pressure sensor faults

Loss of power, limp mode, DPF or engine warning lights, frequent regenerations, or a hot exhaust smell after short trips.

How to check

Drive at mixed speeds and then accelerate firmly once the engine is warm.

Estimated Repair Cost

£1,400

3Moderate Likelihood

Timing belt and water pump overdue-service risk

May have no obvious symptoms before failure, so service history matters more than how it sounds on the day.

How to check

Check dated service invoices for the timing-belt change and compare the recorded date and mileage with the service schedule.

Estimated Repair Cost

£750

MOT Failure Rate

0%10%20%30%0–20,000 miles: 7.5% (141 failed / 1,877 tests)20,000–40,000 miles: 10.5% (1,324 failed / 12,554 tests)40,000–60,000 miles: 13.5% (2,043 failed / 15,096 tests)60,000–80,000 miles: 16.0% (1,792 failed / 11,207 tests)80,000–100,000 miles: 17.8% (1,078 failed / 6,060 tests)100,000–120,000 miles: 19.2% (465 failed / 2,422 tests)120,000–140,000 miles: 18.9% (179 failed / 949 tests)140,000–160,000 miles: 21.0% (79 failed / 377 tests)160,000–180,000 miles: 19.3% (27 failed / 140 tests)180,000–200,000 miles: 22.4% (11 failed / 49 tests)020k40k60k80k100k120k140k160k180k200kMilesFailure rate
2017 Audi A5 2.0 Diesel Manual B9

Audi A5 buying questions

Is a 2017 Audi A5 worth buying?

It can be, but only if the individual car backs it up. For the 2017 Audi A5 2.0 Diesel Manual B9, treat model-level patterns as viewing priorities and let condition, history and inspection evidence decide.

What common problems affect the Audi A5 (2017)?

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 an Audi A5?

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