AutoRank

MERCEDES-BENZ SLK - Model Report

Reliability, mileage, fuel mix, safety, and defect profile from AutoRank.

Reporting Period: Last 5 years Report Date: Generated today Filters: All years, fuels and engines autorank.co.uk/models/mercedes-benz/slk

Time Period & Model

Time period snapshot: Last 5 years

Manufacturer: Mercedes-Benz

Model: Slk

Model reliability rank

MOT-based rank from 367,564 selected-period tests.

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Overall MOT pass rate

77.9%

Share of this model's 367,564 selected-period MOT tests that pass.

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Efficiency, emissions & tax

Average MPG

48.7 mpg

CO2 emission

143 g/km

Euro emissions

Euro 5

Tax cost

£245/yr

Average vehicle miles

76,764

Moderate average mileage in the current pool.

Life expectancy miles

76,770

Lower mature-fleet mileage expectation.

Average vehicle age

17.3

Older average age in the represented fleet.

Vehicles represented

49,766

49,765 valid MOT, 1 under 3 years.

Tests analysed

367,564

367,564 MOT tests in the selected period.

Rarity ranking

Based on Make & Model

Scarce

49,766On the road

Insight summary

Mercedes-Benz Slk is a scarce model in this snapshot, with 49,766 represented vehicles and 0.12% of the active UK pool tracked by AutoRank. For the last 5 years, it has a pass rate of 77.9% from 367,564 MOT tests, with a reliability score of 61. The current pool shows an average of 76,764 miles and an average age of 17.3 years, while mature-fleet mileage is estimated at 76,770 miles. Petrol leads the fuel split, followed by diesel, and the most frequent defect themes are coil springs, windscreen damage and engine warning light. The practical read is that the Mercedes-Benz Slk looks a little better than average, but still rewards careful checks on mileage and maintenance.

Fuel type breakdown (by model)

Fuel	Vehicles
PETROL	37,150
DIESEL	12,610
LPG	5
ELECTRIC	1

Euro NCAP Safety

No NCAP tests found for this model.

Top 25 most common defects (by model)

Defect	Count
Offside Front Coil spring fractured or broken (5.3.1 (b) (i))	5,054
Windscreen damaged but not adversely affecting driver's view (3.2 (a) (i))	5,028
Nearside Front Coil spring fractured or broken (5.3.1 (b) (i))	4,173
Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h))	3,787
Offside Rear Coil spring fractured or broken (5.3.1 (b) (i))	3,749
Nearside Rear Tyre tread depth below requirements of 1.6mm (5.2.3 (e))	3,347
Supplementary restraint system warning lamp indicates a fault (7.1.6 (a))	3,291
Nearside Rear Coil spring fractured or broken (5.3.1 (b) (i))	2,918
Parking brake efficiency below requirements (1.4.2 (a) (i))	2,674
Anti-lock braking system warning lamp indicates an ABS fault (1.6 (b))	2,605
Offside Rear Tyre tread depth below requirements of 1.6mm (5.2.3 (e))	2,556
Electronic stability control warning lamp indicates a fault (7.12 (e))	2,133
Nearside Headlamp lens slightly defective (4.1.1 (b) (i))	1,661
Offside Headlamp lens slightly defective (4.1.1 (b) (i))	1,660
Offside Front Tyre has ply or cords exposed (5.2.3 (d) (ii))	1,657
Offside Front Anti-roll bar linkage ball joint dust cover severely deteriorated (5.3.4 (b) (i))	1,565
Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c))	1,551
Windscreen washer not working (3.5 (a))	1,472
Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i))	1,453
Nearside Front Anti-roll bar linkage ball joint dust cover severely deteriorated (5.3.4 (b) (i))	1,439
Offside Rear Brake pipe excessively corroded (1.1.11 (c))	1,393
Nearside Front Tyre has ply or cords exposed (5.2.3 (d) (ii))	1,343
Nearside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i))	1,307
Offside Front Position lamp not working (4.2.1 (a) (ii))	1,294
Nearside Rear Brake pipe excessively corroded (1.1.11 (c))	1,292

All 25 defects ranked by recorded countShowing 60,402 defects across this top 25 set

Offside Front Coil spring fractured or broken (5.3.1 (b) (i))

5,054

Windscreen damaged but not adversely affecting driver's view (3.2 (a) (i))

5,028

Nearside Front Coil spring fractured or broken (5.3.1 (b) (i))

4,173

Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h))

3,787

Offside Rear Coil spring fractured or broken (5.3.1 (b) (i))

3,749

Nearside Rear Tyre tread depth below requirements of 1.6mm (5.2.3 (e))

3,347

Supplementary restraint system warning lamp indicates a fault (7.1.6 (a))

3,291

Nearside Rear Coil spring fractured or broken (5.3.1 (b) (i))

2,918

Parking brake efficiency below requirements (1.4.2 (a) (i))

2,674

Anti-lock braking system warning lamp indicates an ABS fault (1.6 (b))

2,605

Offside Rear Tyre tread depth below requirements of 1.6mm (5.2.3 (e))

2,556

Electronic stability control warning lamp indicates a fault (7.12 (e))

2,133

Nearside Headlamp lens slightly defective (4.1.1 (b) (i))

1,661

Offside Headlamp lens slightly defective (4.1.1 (b) (i))

1,660

Offside Front Tyre has ply or cords exposed (5.2.3 (d) (ii))

1,657

Offside Front Anti-roll bar linkage ball joint dust cover severely deteriorated (5.3.4 (b) (i))

1,565

Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c))

1,551

Windscreen washer not working (3.5 (a))

1,472

Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i))

1,453

Nearside Front Anti-roll bar linkage ball joint dust cover severely deteriorated (5.3.4 (b) (i))

1,439

Offside Rear Brake pipe excessively corroded (1.1.11 (c))

1,393

Nearside Front Tyre has ply or cords exposed (5.2.3 (d) (ii))

1,343

Nearside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i))

1,307

Offside Front Position lamp not working (4.2.1 (a) (ii))

1,294

Nearside Rear Brake pipe excessively corroded (1.1.11 (c))

1,292

Mercedes-Benz Slk reliability and MOT data