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Mercedes-benz S-CLASS - 2011

170.2 faults per 100 tests
Year average for all cars of 2011 is 274.4 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Mercedes-benz S-CLASS, model year 2011. Sample size: 1,084 cars, 2,433 tests and 4,140 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 1,084 cars

The 2011 Mercedes-Benz S-Class has a significantly lower overall defect rate of 170 per 100 vehicles, which is 37% better than the average for cars of the same year, recorded at 271 per 100. In particular, it excels in several categories, showing notably fewer issues with steering, visibility, lights and electrics, and body structure compared to the average. Despite an increase in defects with higher mileage, the S-Class consistently performs better than average across all mileage segments. Overall, its performance indicates a reliable vehicle with specific strengths in key areas.

Cars by mileage segment

Total: 1,084 cars

Categories

Brakes
▼ 4.6% worse
115.0 faults / 100 tests
Year avg: 109.9 / 100 tests
  • Brake pipe damaged or excessively corroded
  • Brake disc or drum: insecure, fractured or otherwise likely to fail
  • Brake lining or pad: worn below 1.5mm
  • Brake disc or drum: significantly and obviously worn
Steering
▲ 70.3% better
4.7 faults / 100 tests
Year avg: 15.8 / 100 tests
Visibility
▲ 47.6% better
11.1 faults / 100 tests
Year avg: 21.2 / 100 tests
Lights & Electrics
▲ 82.0% better
12.4 faults / 100 tests
Year avg: 68.9 / 100 tests
Wheels & Suspension
▲ 38.4% better
164.2 faults / 100 tests
Year avg: 266.4 / 100 tests
  • Tyre tread depth not in accordance with the requirements
  • A suspension pin, bush, joint or bearing: excessively worn
  • A wheel bearing: with excessive play
  • A tyre: with a lump, bulge or tear … or with cords exposed or damaged
  • A suspension pin, bush, joint or bearing: excessively worn
Body/Structure
▲ 77.0% better
7.2 faults / 100 tests
Year avg: 31.3 / 100 tests
Equipment
▲ 79.7% better
1.5 faults / 100 tests
Year avg: 7.4 / 100 tests
Other
▲ 12.9% better
24.2 faults / 100 tests
Year avg: 27.8 / 100 tests
  • Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users

Fault rate by mileage segment

Model    Year average
0 421 0–31,000 mi 31,000–62,000 62,000–93,000 93,000–124,000 124,000+
* Metric: faults per 100 tests.

Most common faults (Top 10)

Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 629
Brake pipe damaged or excessively corroded
ADVISORY
Occurrences: 429
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 374
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 352
A wheel bearing: with excessive play
ADVISORY
Occurrences: 231
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 210
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 198
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 137
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 133
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 123

Serious faults (Top 10)

A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 133
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 64
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 52
Parking brake efficiency: below minimum requirement
FAIL
Occurrences: 45
Brake pipe damaged or excessively corroded
FAIL
Occurrences: 33
A suspension joint dust cover: missing or no longer prevents the ingress of dirt etc.
FAIL
Occurrences: 32
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 27
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 23
Warning device shows system malfunction
FAIL
Occurrences: 20
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 20