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Mercedes-benz SL - 1991

140.7 faults per 100 tests
Year average for all cars of 1991 is 263.4 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Mercedes-benz SL, model year 1991. Sample size: 129 cars, 216 tests and 304 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 129 cars

The 1991 Mercedes-Benz SL exhibits a significantly lower overall defect rate compared to the average car of the same year, with 141 defects per 100 vehicles, which is 46.5% better than the yearly average of 263 defects. The vehicle shows notable strengths in several categories, particularly in brakes, where it has 60 defects per 100 vehicles compared to the average of 107, and in body structure, with only 14 defects compared to the average of 63. Mileage trends indicate increased defects with higher mileage, especially in the 93,000 to 124,000-mile category, where the defect rate reaches 455, which is still lower than the general average for that mileage range. Overall, the SL stands out for its reliability in key areas, suggesting strong build quality for this model.

Cars by mileage segment

Total: 129 cars

More model years for Mercedes-benz SL

1984 1985 1986 1987 1988 1989 1991 1992 1993 1994 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

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
▲ 42.8% better
60.2 faults / 100 tests
Year avg: 105.2 / 100 tests
  • Brake pipe damaged or excessively corroded
  • Flexible brake hose: excessively damaged, deteriorated, chafed, twisted or stretched
Steering
▲ 33.1% better
19.4 faults / 100 tests
Year avg: 29.0 / 100 tests
Visibility
▲ 47.6% better
11.1 faults / 100 tests
Year avg: 21.2 / 100 tests
Lights & Electrics
▲ 42.4% better
34.3 faults / 100 tests
Year avg: 59.5 / 100 tests
Wheels & Suspension
▲ 45.9% better
95.4 faults / 100 tests
Year avg: 176.5 / 100 tests
  • Tyre tread depth not in accordance with the requirements
  • A spring: or spring component fractured or seriously weakened
  • A tyre: with a lump, bulge or tear … or with cords exposed or damaged
  • A suspension pin, bush, joint or bearing: excessively worn
  • A suspension joint dust cover: severely deteriorated
Body/Structure
▲ 78.3% better
13.9 faults / 100 tests
Year avg: 64.1 / 100 tests
Equipment
▲ 44.6% better
10.2 faults / 100 tests
Year avg: 18.4 / 100 tests
Other
▲ 30.1% better
37.0 faults / 100 tests
Year avg: 52.9 / 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
0 474 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)

Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 33
Brake pipe damaged or excessively corroded
ADVISORY
Occurrences: 29
Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 16
A spring: or spring component fractured or seriously weakened
ADVISORY
Occurrences: 15
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 13
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 13
A suspension joint dust cover: severely deteriorated
MINOR
Occurrences: 10
A wheel bearing: with excessive play
ADVISORY
Occurrences: 10
Flexible brake hose: excessively damaged, deteriorated, chafed, twisted or stretched
ADVISORY
Occurrences: 8
A suspension component: excessively damaged or corroded
ADVISORY
Occurrences: 8

Serious faults (Top 10)

Lamp: missing, inoperative or in the case of a multiple light source more than a half not functioning
FAIL
Occurrences: 6
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 5
A headlamp: missing, inoperative or more than ½ not functioning in the case of LED
FAIL
Occurrences: 5
A steering ball joint: with excessive wear or free play
FAIL
Occurrences: 5
Brake pipe damaged or excessively corroded
FAIL
Occurrences: 4
Wiper not operating or missing
FAIL
Occurrences: 3
Beam image obviously incorrect
FAIL
Occurrences: 3
Emissions levels exceed default limits
FAIL
Occurrences: 2
The strength or continuity of the load bearing structure within 30cm … is significantly reduced or inadequately repaired
FAIL
Occurrences: 2
Seat belt buckle missing, damaged or not functioning as intended
FAIL
Occurrences: 2