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Mercedes-benz 300 - 1986

237.3 faults per 100 tests
Year average for all cars of 1986 is 241.8 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Mercedes-benz 300, model year 1986. Sample size: 196 cars, 381 tests and 904 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 196 cars

The 1986 Mercedes-Benz 300 has an overall defect rate of 237 defects per 100 vehicles, which is slightly better than the average for cars of the same year at 240 defects per 100. Notably, this model shows a significant increase in defects related to steering and wheels, with rates of 37 and 188 per 100, respectively, both exceeding average rates in these categories. In contrast, it performs better in visibility, lights and electrics, and equipment, with defects significantly lower than average in these areas. Mileage trends indicate that defect rates rise substantially for higher mileage ranges, particularly over 124,000 miles, where the defect rate is notably high at 565 per 100.

Cars by mileage segment

Total: 196 cars

More model years for Mercedes-benz 300

1986 1987 1988 1989 1990 1991 1992 1993

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
▼ 14.3% worse
100.8 faults / 100 tests
Year avg: 88.2 / 100 tests
  • Brake pipe damaged or excessively corroded
  • Significant brake effort recorded with no brake applied indicating a binding brake
Steering
▼ 22.3% worse
36.7 faults / 100 tests
Year avg: 30.0 / 100 tests
  • Steering rack gaiter or ball joint dust cover: damaged or deteriorated
Visibility
▲ 49.5% better
11.0 faults / 100 tests
Year avg: 21.8 / 100 tests
Lights & Electrics
▲ 31.1% better
41.5 faults / 100 tests
Year avg: 60.2 / 100 tests
Wheels & Suspension
▼ 19.8% worse
188.5 faults / 100 tests
Year avg: 157.4 / 100 tests
  • A suspension joint dust cover: severely deteriorated
  • 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: missing or no longer prevents the ingress of dirt etc.
Body/Structure
▲ 17.6% better
45.1 faults / 100 tests
Year avg: 54.7 / 100 tests
  • Exhaust system has a major leak or is insecure
  • Vehicle structure corroded to the extent that: the rigidity of the assembly is significantly reduced
Equipment
▲ 62.7% better
6.3 faults / 100 tests
Year avg: 16.9 / 100 tests
Other
▲ 17.6% better
44.6 faults / 100 tests
Year avg: 54.1 / 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
0 565 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)

A suspension joint dust cover: severely deteriorated
MINOR
Occurrences: 90
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 74
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 73
Brake pipe damaged or excessively corroded
ADVISORY
Occurrences: 71
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 50
Significant brake effort recorded with no brake applied indicating a binding brake
ADVISORY
Occurrences: 29
Exhaust system has a major leak or is insecure
ADVISORY
Occurrences: 28
Steering rack gaiter or ball joint dust cover: damaged or deteriorated
MINOR
Occurrences: 28
Vehicle structure corroded to the extent that: the rigidity of the assembly is significantly reduced
ADVISORY
Occurrences: 23
A suspension joint dust cover: missing or no longer prevents the ingress of dirt etc.
FAIL
Occurrences: 19

Serious faults (Top 10)

A suspension joint dust cover: missing or no longer prevents the ingress of dirt etc.
FAIL
Occurrences: 19
The strength or continuity of the load bearing structure within 30cm … is significantly reduced or inadequately repaired
FAIL
Occurrences: 16
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 12
Lamp: missing, inoperative or in the case of a multiple light source more than a half not functioning
FAIL
Occurrences: 12
Steering rack gaiter or ball joint dust cover: missing or no longer prevents the ingress of dirt etc.
FAIL
Occurrences: 9
Body, cab or chassis: excessively corroded at mounting points
FAIL
Occurrences: 8
Vehicle structure corroded to the extent that: the rigidity of the assembly is significantly reduced
FAIL
Occurrences: 8
A suspension component: excessively damaged or corroded
FAIL
Occurrences: 6
Significant brake effort recorded with no brake applied indicating a binding brake
FAIL
Occurrences: 6
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 6