2017 Mercedes-Benz S-Class 2.9L Diesel · KKH 796N
2017 Mercedes-Benz S-Class (2.9L, diesel). First registered 15 Nov 2017. MOT valid until 08 Dec 2026.
- Make & Model
- MERCEDES-BENZ S-Class
- Year / Origin
- 2017 · Borehamwood (Luton)
- Safety Recall
- Unknown
- MOT Status
- Valid until 08 Dec 2026
- Road Tax
- —
- Recorded Mileage
- —
- ULEZ Compliance
- ULEZ Compliant (Euro 6 Diesel)
- Fuel & Engine
- Diesel · 2.9L
- 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.
KKH 796N Key Findings
- No MOT test records found for this registration
- MOT valid until 08/12/2026
Derived directly from the recorded DVSA and DVLA data shown on this page.
MOT Status
No MOT history available
No MOT test records were found for this registration. DVSA’s digital archive only covers tests from 2005, so a vehicle that has not been tested since then may legitimately have no visible history.
Technical Specifications
Core Specifications
Identification & Status
Dimensions & Weights
Diagnostic & Valuation Intelligence
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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: Average
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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Digital Service History
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MOT Status
No MOT history available
No MOT test records were found for this registration. DVSA’s digital archive only covers tests from 2005, so a vehicle that has not been tested since then may legitimately have no visible history.
Vehicle & Plate History
Previous plates for this vehicle
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MERCEDES-BENZ S-Class Model Intelligence & Reliability
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 2017 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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