2004 Mercedes-Benz SLK 1.8L Petrol · KX54 AHA
2004 Mercedes-Benz SLK (1.8L, petrol). First registered 02/09/2004. Recorded mileage 74,188 miles. MOT valid until 27/01/2027. Taxed until 01/02/2027.
- Make & Model
- MERCEDES-BENZ SLK
- Year / Origin
- 2004 · Northampton
- Safety Recall
- Unknown
- MOT Status
- Valid until 27/01/2027
- Road Tax
- Taxed (01/02/2027)
- Recorded Mileage
- 74,188 mi
- ULEZ Compliance
- Check Required (Pre-Euro 4 Petrol)
- Fuel & Engine
- Petrol · 1.8L
- Reliability Guide
- Common Faults
- Fuel Type
- Petrol
- Year
- 2004
- Engine
- 1796cc
KX54 AHA Key Findings
- 5 MOT tests recorded
- Latest MOT passed on 09/01/2026
- 74,188 miles recorded at latest MOT
- No defects recorded at the latest MOT
- Recurring windscreen items (2 mentions)
Derived directly from the recorded DVSA and DVLA data shown on this page.
MOT Roadworthiness: Excellent
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.
Technical Specifications
Core Specifications
Identification & Status
Dimensions & Weights
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KX54 AHA Mileage History
- 07/01/202271,799 mi
- 04/01/202372,402 mi+603 mi
- 05/01/202473,070 mi+668 mi
- 10/01/202573,534 mi+464 mi
- 09/01/202674,188 mi+654 mi
Average of roughly 596 miles per year across 5 recorded odometer readings.
KX54 AHA 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 Slk (KX54 AHA) between January 2022 and January 2026.
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.
Across all tests, the most frequently flagged areas are: Windscreen (2 issues). Repeated mentions in one area can indicate an ongoing pattern worth checking in person.
Buyer's Guide & Inspection Advisory
Expert automotive synthesis from historical MOT defect records and market benchmarks.
Our Verdict
This 2004 Mercedes-Benz SLK presents a s
When inspecting this vehicle, prioritise the operation of the folding hard-top roof, as this is a complex mechanical system that can be costly to repair if ignored. Check for any signs of water ingress in the boot or footwells, which can affect the electronics housed in these areas.
Verify that the service history aligns with the MOT mileage progression. While the MOT record is clean, it does not detail the condition of the timing chain or the supercharger (Kompressor) health, both of which are critical components for this 1.8-litre engine. Ensure all electrical features, including the climate control and infotainment, are fully functional during your test drive.
As a 1.8-litre petrol roadster, the SLK is not the most economical vehicle by modern standards. You should expect moderate fuel consumption, particularly in urban driving conditions. Road tax for a 2004 vehicle will be based on its emissions profile, so check the V5C document to confirm the specific tax band.
Maintenance costs for a Mercedes-Benz of this era can be higher than mass-market hatchbacks due to the price of genuine parts. Budgeting for an annual service and a contingency fund for age-related wear, such as suspension components or brake systems, is essential. Estimated annual running costs, including fuel, tax, insurance, and routine maintenance, typically fall between £1,200 and £1,500.
The MOT history highlights recurring windscreen damage; while this did not lead to a failure, ensure the glass is free of cracks that could worsen or fail a future test. Given the model's known weak points, pay close attention to the suspension arms and the condition of the brake pads and discs, as these are common failure points for the SLK platform.
Inspect the underside of the vehicle for any signs of corrosion, which can affect older Mercedes-Benz models. Check the condition of the tyres for uneven wear, which may indicate underlying alignment issues or worn suspension bushings. A thorough inspection of the engine bay for oil leaks, particularly around the cylinder head and supercharger, is also recommended.
With 74,188 miles on the clock, this silver SLK has covered a modest distance, averaging well below the typical annual usage for a vehicle of this age. The MOT history from 2022 to 2026 shows a consistent record of passes, with only minor windscreen advisories noted in 2023 and 2024. Given the vehicle's age, the absence of major structural or mechanical failure records in recent years is a notable data point.
The Mercedes-Benz SLK (R171 generation) generally performs in line with industry expectations, though it is susceptible to suspension and brake-related MOT failures as the vehicles age.
Reviewed by the IsItAGoodCar editorial team — Verified automotive analysis synthesized from official vehicle registries.
Data Sources
DVSA
Official MOT test logs & failure reasons
DVLA
Tax, registration & powertrain specs
Experian
Finance, stolen markers & total loss
AI Analysis
Historical fault & advisory patterns
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