Should I buy a 2012–2015 Kia Optima 1.7 Diesel Automatic?

Explore common problems, estimated repair costs and practical checks for the 2012–2015 Kia Optima 1.7 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

Vacuum pump non-return valve brake-assist loss

Brake pedal feels unusually heavy and the car needs more effort to slow down.

How to check

During a gentle drive, slow the car several times from town speeds with normal pedal pressure.

Estimated Repair Cost

£700

2Moderate Likelihood

DPF clogging and repeated regeneration

Fan running after switch-off, poor pull, warning lights, frequent hot-smelling regens, or limp mode.

How to check

Drive until warm, then accelerate steadily in a higher gear from low revs.

Estimated Repair Cost

£1,200

3High Likelihood

Automatic transmission judder or hesitant take-up

Jerky pull-away, hesitation when selecting drive, shudder in traffic, or uneven low-speed gearchanges.

How to check

Pull away gently several times, then creep in slow traffic and make a few low-speed stop-starts.

Estimated Repair Cost

£1,200

MOT Failure Rate

0%10%20%30%0–20,000 miles: 8.8% (122 failed / 1,385 tests)20,000–40,000 miles: 13.8% (803 failed / 5,808 tests)40,000–60,000 miles: 18.5% (1,206 failed / 6,520 tests)60,000–80,000 miles: 22.6% (1,331 failed / 5,886 tests)80,000–100,000 miles: 25.8% (1,167 failed / 4,520 tests)100,000–120,000 miles: 27.3% (778 failed / 2,851 tests)120,000–140,000 miles: 27.4% (394 failed / 1,438 tests)140,000–160,000 miles: 25.9% (187 failed / 721 tests)160,000–180,000 miles: 29.6% (110 failed / 372 tests)180,000–200,000 miles: 27.7% (48 failed / 173 tests)020k40k60k80k100k120k140k160k180k200kMilesFailure rate
2012–2015 Kia Optima 1.7 Diesel Automatic

Kia Optima buying questions

Is a 2012–2015 Kia Optima worth buying?

It can be, but only if the individual car backs it up. For the 2012–2015 Kia Optima 1.7 Diesel Automatic, treat model-level patterns as viewing priorities and let condition, history and inspection evidence decide.

What common problems affect the Kia Optima (2012–2015)?

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 Kia Optima?

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