2004 Mercedes-Benz SL 3.7L Petrol · WA54 UEG
2004 Mercedes-Benz SL (3.7L, petrol). First registered 01 Sept 2004. Recorded mileage 92,532 miles. MOT expired on 13 Sept 2024.
- Make & Model
- MERCEDES-BENZ SL
- Year / Origin
- 2004 · Exeter
- Safety Recall
- Unknown
- MOT Status
- Expired on 13 Sept 2024
- Road Tax
- —
- Recorded Mileage
- 92,532 mi
- ULEZ Compliance
- Check Required (Pre-Euro 4 Petrol)
- Fuel & Engine
- Petrol · 3.7L
- Reliability Guide
- Common Faults
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WA54 UEG Key Findings
- 2 MOT tests recorded
- Latest MOT passed on 06/09/2023
- 92,532 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.
WA54 UEG MOT History
Interpretation generated from the recorded test data above — not an official DVSA statement and not a substitute for an independent inspection.
2 MOT tests are recorded for this 2004 Mercedes-Benz Sl (WA54 UEG) between September 2022 and September 2023.
The record contains 2 passes and 0 failures.
No failures or advisories appear anywhere in the recorded tests, so the documented MOT record is relatively clean.
WA54 UEG Mileage History
- 09/09/202291,875 mi
- 06/09/202392,532 mi+657 mi
Average of roughly 663 miles per year across 2 recorded odometer readings.
Technical Specifications
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Known faults for Mercedes-Benz Mercedes-Benz SLK (R171)
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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MERCEDES-BENZ SL 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.
- M272 V6 Balance Shaft WearSerious
Early 3.0L and 3.5L V6 engines used soft metal gears on the balance shaft. The gears wear down, altering engine timing and requiring a massive engine-out repair.
- Vario-Roof Hydraulic LeaksModerate
The complex folding hardtop uses multiple hydraulic cylinders that can leak as the seals age.
- Rear Subframe Corrosion and PerforationSerious
The pressed-steel multi-link rear subframe on the R171 SLK is highly prone to severe internal corrosion, aggravated by decades of wet UK winter roads and road salt. Moisture and grime accumulate inside the hollow box sections, rusting the subframe from the inside out until structural perforation occurs around the suspension control arm mounting points. In severe cases, an arm mount shears off entirely, causing sudden dangerous rear-wheel steering and an immediate MOT failure. Mercedes-Benz UK has historically assessed replacements under goodwill on a case-by-case basis.
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