2003 Mercedes-Benz S-Class 3.7L Petrol · 821 BNN
2003 Mercedes-Benz S-Class (3.7L, petrol). First registered 02 Jan 2003. Recorded mileage 64,260 miles. MOT valid until 05 Jan 2027.
- Make & Model
- MERCEDES-BENZ S-Class
- Year / Origin
- 2003
- Safety Recall
- Unknown
- MOT Status
- Valid until 05 Jan 2027
- Road Tax
- —
- Recorded Mileage
- 64,260 mi
- 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.
821 BNN Key Findings
- 5 MOT tests recorded
- Latest MOT passed on 08/12/2025
- 64,260 miles recorded at latest MOT
- No defects recorded at the latest MOT
Derived directly from the recorded DVSA and DVLA data shown on this page.
821 BNN 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 2003 Mercedes-Benz S-Class (821 BNN) between December 2021 and December 2025.
The record contains 5 passes and 0 failures.
No failures or advisories appear anywhere in the recorded tests, so the documented MOT record is relatively clean.
821 BNN Mileage History
- 15/12/202162,506 mi
- 20/12/202262,939 mi+433 mi
- 06/12/202363,148 mi+209 mi
- 09/12/202463,827 mi+679 mi
- 08/12/202564,260 mi+433 mi
Average of roughly 441 miles per year across 5 recorded odometer readings.
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: 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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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 2003 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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