2014 Mercedes-Benz S-Class 3.0L Diesel · NN12 ARM
2014 Mercedes-Benz S-Class (3.0L, diesel). First registered 01 Sept 2014. Recorded mileage 63,855 miles. MOT valid until 29 Mar 2027.
- Make & Model
- MERCEDES-BENZ S-Class
- Year / Origin
- 2014 · Newcastle
- Safety Recall
- Unknown
- MOT Status
- Valid until 29 Mar 2027
- Road Tax
- —
- Recorded Mileage
- 63,855 mi
- ULEZ Compliance
- Non-Compliant (Pre-Euro 6 Diesel)
- Fuel & Engine
- Diesel · 3.0L
- Reliability Guide
- Common Faults
Thinking of buying this vehicle? Free MOT and tax checks do not cover legal ownership. If outstanding finance exists, finance companies have legal right to repossess without compensation.
NN12 ARM Key Findings
- 5 MOT tests recorded
- Latest MOT passed on 24/03/2026
- 63,855 miles recorded at latest MOT
- 1 historical MOT failure
- No defects recorded at the latest MOT
Derived directly from the recorded DVSA and DVLA data shown on this page.
NN12 ARM MOT History
Interpretation generated from the recorded test data above — not an official DVSA statement and not a substitute for an independent inspection.
5 MOT tests are recorded for this 2014 Mercedes-Benz S-Class (NN12 ARM) between March 2023 and March 2026.
The record contains 4 passes and 1 failure.
The most recent test on 24 March 2026 was a pass, although the earlier record includes 1 failure that buyers may want to investigate.
Recorded failure items include: “Registration plate does not conform to the specified requirements Incorrect spacing. (0.1 (d))”.
NN12 ARM Mileage History
- 29/03/202350,515 mi
- 18/03/202453,899 mi+3,384 mi
- 25/03/202453,946 mi+47 mi
- 18/03/202558,564 mi+4,618 mi
- 24/03/202663,855 mi+5,291 mi
Average of roughly 4,465 miles per year across 5 recorded odometer readings.
Technical Specifications
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Known faults for Mercedes-Benz Mercedes-Benz S-Class (W222)
Our database tracks 6 specific mechanical faults and recurring failure patterns identified across UK MOT testing stations for this generation.
MOT Roadworthiness: Good
This rating reflects historical MOT pass rates and recurring advisory wear patterns from official DVSA test logs. Note that roadworthiness does not verify outstanding finance, insurance write-offs, or stolen records.
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Verified MOT failure trends, buying advice, and technical directory specifications.
Owner-reported defects, recurring MOT failure points, and estimated repair costs.
Browse production generations, registration statistics, and trim variants.
Historical MOT pass rates and DVLA records for 2014 model year cars.
- Airmatic Suspension FailureSerious
The AIRMATIC semi-active air suspension system features rubber air spring bellows that perish and leak over time, valve blocks that seize, and an electric air compressor that burns out from running continuously to compensate for pressure loss. Replacing struts and compressors carries substantial parts costs.
- NOX Sensor FailureModerate
Diesel variants (OM642 3.0-litre V6 in S 350 d and OM656 2.9-litre straight-six in facelift models) suffer widespread failure of the upstream and downstream nitrogen oxide (NOx) exhaust sensors. Moisture ingress and thermal shock damage internal sensor ceramics, causing engine warnings and non-start countdowns.
- Front Suspension Ball Joint and Control Arm WearModerate
Weighing over two tonnes, the W222 exerts tremendous load on its complex multi-link front suspension. Lower control arm compliance bushes, track control ball joints, and anti-roll bar drop links wear rapidly on UK roads, resulting in knocking over speed bumps and MOT failure.
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