Should I buy a 2013–2020 Mercedes-Benz S-Class?

Explore common problems, estimated repair costs and practical checks for the 2013–2020 Mercedes-Benz S-Class. 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

Airmatic leak-down and compressor overwork

One side sits lower after standing, the car takes too long to rise, or a suspension warning appears.

How to check

Leave the car parked for a while before the viewing if possible, then start it and drive slowly over a rough side road.

Estimated Repair Cost

£1,800

2Moderate Likelihood

AdBlue / NOx sensor faults with restart countdown risk

Engine light, AdBlue warning, reduced power at times, or a message saying the car will not restart after a set mileage.

How to check

Start the car, let the dash complete its checks, then drive until fully warm.

Estimated Repair Cost

£1,200

3Moderate Likelihood

Swirl flap and intake contamination faults

Engine light, sluggish response, uneven running or poorer fuel economy than expected.

How to check

Accelerate gently and then more firmly from low speed once the engine is warm.

Estimated Repair Cost

£1,200

MOT Failure Rate

0%5%10%15%20%0–20,000 miles: 6.0% (880 failed / 14,585 tests)20,000–40,000 miles: 9.0% (2,930 failed / 32,673 tests)40,000–60,000 miles: 11.0% (3,087 failed / 28,072 tests)60,000–80,000 miles: 11.7% (2,307 failed / 19,657 tests)80,000–100,000 miles: 11.6% (1,490 failed / 12,808 tests)100,000–120,000 miles: 11.2% (918 failed / 8,181 tests)120,000–140,000 miles: 11.6% (619 failed / 5,332 tests)140,000–160,000 miles: 12.6% (427 failed / 3,383 tests)160,000–180,000 miles: 11.6% (246 failed / 2,127 tests)180,000–200,000 miles: 11.9% (159 failed / 1,337 tests)020k40k60k80k100k120k140k160k180k200kMilesFailure rate
2013–2020 Mercedes-Benz S-Class

Mercedes-Benz S-Class buying questions

Is a 2013–2020 Mercedes-Benz S-Class worth buying?

It can be, but only if the individual car backs it up. For the 2013–2020 Mercedes-Benz S-Class, treat model-level patterns as viewing priorities and let condition, history and inspection evidence decide.

What common problems affect the Mercedes-Benz S-Class (2013–2020)?

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 S-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