2004 Mercedes-Benz S-Class 3.7L Petrol · M51 BEC
2004 Mercedes-Benz S-Class (3.7L, petrol). First registered 01 Sept 2004. MOT expired on 18 Sept 2021. Currently declared SORN.
- Make & Model
- MERCEDES-BENZ S-Class
- Year / Origin
- 2004 · Manchester
- Safety Recall
- Unknown
- MOT Status
- Expired on 18 Sept 2021
- Road Tax
- SORN
- Recorded Mileage
- —
- ULEZ Compliance
- Check Required (Pre-Euro 4 Petrol)
- Fuel & Engine
- Petrol · 3.7L
- 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.
M51 BEC Key Findings
- No MOT test records found for this registration
- MOT expired on 18/09/2021
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 (W220)
Our database tracks 3 specific mechanical faults and recurring failure patterns identified across UK MOT testing stations for this generation.
MOT Roadworthiness: Below 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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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.
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Plate Neighbors
Batch Registration Neighbors (M51B Series)
Vehicles registered in the same regional DVLA batch as M51BEC.
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 2004 model year cars.
- Biodegradable wiring harness insulationSerious
Mercedes used a soy-based wiring insulation that degrades over time, exposing bare wires and causing short circuits, random warning lights and potential fire risk. Engine bay harnesses are worst affected.
- Airmatic suspension collapseSerious
The air springs and compressor degrade with age. Cars sag overnight, ride poorly and the compressor eventually burns out if leaks are ignored.
- SBC brake system failureSerious
The Sensotronic Brake Control unit can reach its cycle limit or fail, bringing brake warnings and a hard pedal. Replacement units are expensive and the system is complex.
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