2011 Mercedes-Benz SLK 1.8L Petrol · WG11 HWB
2011 Mercedes-Benz SLK (1.8L, petrol). First registered 17 Jun 2011. Recorded mileage 82,644 miles. MOT valid until 18 Aug 2027. Taxed until 01 Sept 2027.
- Make & Model
- MERCEDES-BENZ SLK
- Year / Origin
- 2011 · Exeter
- Safety Recall
- Unknown
- MOT Status
- Valid until 18 Aug 2027
- Road Tax
- Taxed (01 Sept 2027)
- Recorded Mileage
- 82,644 mi
- ULEZ Compliance
- ULEZ Compliant (Euro 4+)
- Fuel & Engine
- Petrol · 1.8L
- 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.
WG11 HWB Key Findings
- 5 MOT tests recorded
- Latest MOT passed on 03/08/2026
- 82,644 miles recorded at latest MOT
- 1 historical MOT failure
- 4 defects noted at the latest MOT
- Recurring tyres items (5 mentions)
Derived directly from the recorded DVSA and DVLA data shown on this page.
WG11 HWB 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 2011 Mercedes-Benz Slk (WG11 HWB) between June 2024 and August 2026.
The record contains 4 passes and 1 failure.
The most recent test on 03 August 2026 was a pass, although the earlier record includes 1 failure that buyers may want to investigate.
Across all tests, the most frequently flagged areas are: Tyres (5 issues), Brakes (4 issues), Windscreen (1 issue). Repeated mentions in one area can indicate an ongoing pattern worth checking in person.
In total 11 advisory notices are recorded. Advisories flag items that passed but may need attention before the next test; they are not evidence of how well the vehicle has been serviced.
WG11 HWB Mileage History
- 27/06/202478,178 mi
- 27/06/202478,178 mi
- 14/08/202478,207 mi+29 mi
- 20/08/202581,487 mi+3,280 mi
- 03/08/202682,644 mi+1,157 mi
Average of roughly 2,127 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 SLK (R171)
Our database tracks 6 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.
Verify lender finance agreements, insurance write-offs, police stolen registers, and mileage rollback.
Buyer's Guide & Inspection Advisory
Expert automotive synthesis from historical MOT defect records and market benchmarks.
Our Verdict
Proceed with caution. While the vehicle
Focus your attention on the recurring corrosion mentioned in the MOT records. You should ask for evidence that the corroded rear brake pipes, noted in both 2024 and 2026, have been professionally treated or replaced rather than just covered in grease. Check for any current signs of the front oil leak reported in June 2024.
Verify the service history for regular oil changes and specific maintenance of the retractable hard-top mechanism. Given the age and mileage, ensure that all major service intervals have been met to mitigate the risk of the engine issues hinted at by the previous oil leak record.
The 1.8L petrol engine provides a balance of performance and efficiency, though fuel costs will be higher than modern alternatives. Tax is based on the 2011 CO2 emissions band, and insurance groups for the SLK typically fall into a mid-to-high range due to the vehicle's profile.
Maintenance costs for Mercedes-Benz parts are generally premium, and the complex roof system can be expensive to repair if it fails. Based on the engine size and model type, the estimated annual running cost is significant.
Closely examine the rear brake pipes for the corrosion noted in the August 2026 and June 2024 MOT tests. Inspect the nearside rear tyre for the sidewall damage mentioned in the latest report and check the front anti-roll bar linkage for the deteriorated dust cover recorded in August 2026.
Check the engine bay for evidence of the oil leak recorded in 2024. Additionally, test the windscreen wipers to ensure they clear effectively, following the failure recorded in June 2024, and check the front tyres for wear, as this has been a recurring issue for this vehicle.
This grey 2011 Mercedes-Benz SLK has recorded 82,644 miles, which is higher than the model average. The MOT history shows a failure in June 2024 and a recent pass in August 2026, though the latter includes several advisories. Recurring mentions of brake pipe corrosion and previous oil leaks are the primary points of concern for this specific vehicle.
The SLK has an average MOT pass rate of 81.2%, with common failures typically involving tyres, suspension arms, and coil springs.
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
Vehicle & Plate History
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MERCEDES-BENZ SLK 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 2011 model year cars.
- 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.
- 7G-Tronic Automatic Transmission Conductor Plate FailureModerate
The 722.9 7G-Tronic 7-speed automatic gearbox fitted to six-cylinder R171 SLKs features an electro-hydraulic conductor plate (VGS unit) submerged in hot automatic transmission fluid. Over time, thermal cycling and metallic sediment cause the integrated turbine and output speed sensors (Y3/8n1 and Y3/8n2) to fail, triggering diagnostic codes P0717, P0718, or P0705. When the signal drops, the transmission defaults into emergency limp-home mode, locking the gearbox into 2nd gear or reverse until restarted. Independent specialists can rebuild the plate, saving the cost of a brand new SCN-coded valve body.
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