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Mercedes-benz S-CLASS - 2009

221.6 faults per 100 tests
Year average for all cars of 2009 is 311.0 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 2009. Sample size: 1,017 cars, 2,396 tests and 5,309 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 1,017 cars

The 2009 Mercedes-Benz S-Class has an overall defect rate of 222 per 100 vehicles, which is 29% lower than the average for the same year, indicating it performs better overall in terms of defects. Notably, the model excels in categories like steering and lights & electrics, showing significantly lower defect rates compared to the average car, while also demonstrating fewer issues with visibility and body structure. However, it stands out negatively in the brakes category, where it has a defect rate that is 39% higher than the average. Mileage trends indicate that defects increase with mileage, but the S-Class maintains a lower overall defect rate across all mileage segments compared to its peers.

Cars by mileage segment

Total: 1,017 cars

More model years for Mercedes-benz S-CLASS

1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

Other models from Mercedes-benz

Mercedes-benz 190 E Mercedes-benz 300 Mercedes-benz A Mercedes-benz A 180 AMG LINE Mercedes-benz A 180 SPORT Mercedes-benz A 200 Mercedes-benz A 250 AMG LINE Mercedes-benz A-CLASS Mercedes-benz B Mercedes-benz B-CLASS Mercedes-benz C Mercedes-benz CITAN Mercedes-benz CL Mercedes-benz CL 500 Mercedes-benz CLA Mercedes-benz CLC Mercedes-benz CLK Mercedes-benz CLS Mercedes-benz E Mercedes-benz E 220 AMG Mercedes-benz EQA 250 AMG LINE Mercedes-benz EQC 400 AMG LINE Mercedes-benz ESPRINTER Mercedes-benz EVITO Mercedes-benz G Mercedes-benz G-CLASS Mercedes-benz GL Mercedes-benz GLA Mercedes-benz GLA 180 AMG LINE Mercedes-benz GLA 200 AMG LINE Mercedes-benz GLA 250 AMG LINE Mercedes-benz GLA 250 EXCLUSIVE Mercedes-benz GLB 200 AMG LINE Mercedes-benz GLB 220 AMG LINE Mercedes-benz GLC Mercedes-benz GLC 300 AMG Mercedes-benz GLC 300 AMG LINE Mercedes-benz GLE Mercedes-benz GLS Mercedes-benz GT Mercedes-benz ML Mercedes-benz R-Class Mercedes-benz S-Class Mercedes-benz SL Mercedes-benz SLC Mercedes-benz SLK Mercedes-benz SPRINTER Mercedes-benz V Mercedes-benz VIANO Mercedes-benz VITO Mercedes-benz X

Categories

Brakes
▼ 44.1% worse
169.3 faults / 100 tests
Year avg: 117.5 / 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
▲ 74.2% better
4.2 faults / 100 tests
Year avg: 16.3 / 100 tests
Visibility
▲ 29.9% better
16.4 faults / 100 tests
Year avg: 23.4 / 100 tests
Lights & Electrics
▲ 75.4% better
19.9 faults / 100 tests
Year avg: 80.9 / 100 tests
Wheels & Suspension
▲ 43.5% better
169.4 faults / 100 tests
Year avg: 299.8 / 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
▲ 60.2% better
16.5 faults / 100 tests
Year avg: 41.5 / 100 tests
Equipment
▲ 32.5% better
5.6 faults / 100 tests
Year avg: 8.3 / 100 tests
Other
▼ 21.8% worse
41.9 faults / 100 tests
Year avg: 34.4 / 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
0 454 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: 704
Brake pipe damaged or excessively corroded
ADVISORY
Occurrences: 689
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 435
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 347
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 334
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 295
A wheel bearing: with excessive play
ADVISORY
Occurrences: 236
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 163
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 140
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 110

Serious faults (Top 10)

A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 140
Smoke opacity levels exceed the manufacturer’s specified limit
FAIL
Occurrences: 59
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 56
A suspension joint dust cover: missing or no longer prevents the ingress of dirt etc.
FAIL
Occurrences: 52
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 48
Parking brake efficiency: below minimum requirement
FAIL
Occurrences: 46
Brake pipe damaged or excessively corroded
FAIL
Occurrences: 45
Parking brake efficiency: less than 50% of the required value
FAIL
Occurrences: 40
Parking brake inoperative on one side, or in the case of testing on the road, the vehicle deviates excessively from a straight line
FAIL
Occurrences: 32
Lamp: missing, inoperative or in the case of a multiple light source more than a half not functioning
FAIL
Occurrences: 26