2004 Mercedes-Benz SL 3.7L Petrol · Y5 HGS
2004 Mercedes-Benz SL (3.7L, petrol). First registered 11 Jun 2004. Recorded mileage 99,879 miles. MOT expired on 29 Jul 2026.
- Make & Model
- MERCEDES-BENZ SL
- Year / Origin
- 2004 · Leeds
- Safety Recall
- Unknown
- MOT Status
- Expired on 29 Jul 2026
- Road Tax
- —
- Recorded Mileage
- 99,879 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.
Y5 HGS Key Findings
- 5 MOT tests recorded
- Latest MOT passed on 02/07/2025
- 99,879 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.
Y5 HGS 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 2004 Mercedes-Benz Sl (Y5 HGS) between July 2022 and July 2025.
The record contains 4 passes and 1 failure.
The most recent test on 02 July 2025 was a pass, although the earlier record includes 1 failure that buyers may want to investigate.
Y5 HGS Mileage History
- 27/07/202290,923 mi
- 18/07/202392,148 mi+1,225 mi
- 23/07/202496,087 mi+3,939 mi
- 30/07/202496,095 mi+8 mi
- 02/07/202599,879 mi+3,784 mi
Average of roughly 3,054 miles per year across 5 recorded odometer readings.
Technical Specifications
Core Specifications
Identification & Status
Dimensions & Weights
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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: 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.
Verify lender finance agreements, insurance write-offs, police stolen registers, and mileage rollback.
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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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