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Mercedes-benz VIANO - 2015

185.8 faults per 100 tests
Year average for all cars of 2015 is 174.5 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Mercedes-benz VIANO, model year 2015. Sample size: 150 cars, 366 tests and 680 recorded faults.
0%
More faults compared to the average car of same model year

Quick summary

Total: 150 cars

The 2015 Mercedes-Benz Viano has an overall defect rate of 186 per 100 vehicles, which is 9% higher than the average for its year at 170 per 100. Notably, it performs significantly better in the steering category, with a defect rate nearly 70% lower than average. However, the Viano struggles with higher rates of defects in areas such as lights and electrics, body and structure, and equipment compared to its peers. Mileage trends indicate that defect rates increase substantially with higher mileage, particularly after 62,000 miles. Overall, while the Viano excels in steering, it faces challenges in several other critical areas.

Cars by mileage segment

Total: 150 cars

Categories

Brakes
▼ 10.3% worse
93.4 faults / 100 tests
Year avg: 84.7 / 100 tests
  • Brake lining or pad: worn below 1.5mm
  • Brake disc or drum: insecure, fractured or otherwise likely to fail
  • Brake pipe damaged or excessively corroded
  • Significant brake effort recorded with no brake applied indicating a binding brake
  • Anti-slip provision missing, loose or worn smooth
Steering
▲ 72.7% better
2.7 faults / 100 tests
Year avg: 9.9 / 100 tests
Visibility
▲ 14.9% better
13.7 faults / 100 tests
Year avg: 16.1 / 100 tests
Lights & Electrics
▼ 21.6% worse
37.7 faults / 100 tests
Year avg: 31.0 / 100 tests
  • Lamp emitted colour, position or intensity not in accordance with the requirements
Wheels & Suspension
▲ 8.7% better
162.8 faults / 100 tests
Year avg: 178.3 / 100 tests
  • Tyre tread depth not in accordance with the requirements
  • A suspension pin, bush, joint or bearing: excessively worn
Body/Structure
▼ 231.6% worse
38.8 faults / 100 tests
Year avg: 11.7 / 100 tests
  • Exhaust system has a major leak or is insecure
Equipment
▼ 37.5% worse
5.5 faults / 100 tests
Year avg: 4.0 / 100 tests
Other
▼ 28.0% worse
16.9 faults / 100 tests
Year avg: 13.2 / 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
0 376 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: 118
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 89
Exhaust system has a major leak or is insecure
ADVISORY
Occurrences: 52
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 26
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 26
Brake pipe damaged or excessively corroded
ADVISORY
Occurrences: 21
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 20
Significant brake effort recorded with no brake applied indicating a binding brake
ADVISORY
Occurrences: 19
Anti-slip provision missing, loose or worn smooth
ADVISORY
Occurrences: 17
Lamp emitted colour, position or intensity not in accordance with the requirements
ADVISORY
Occurrences: 15

Serious faults (Top 10)

A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 14
Parking brake efficiency: below minimum requirement
FAIL
Occurrences: 14
Exhaust system has a major leak or is insecure
FAIL
Occurrences: 12
A direction indicator: lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
FAIL
Occurrences: 11
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 10
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 7
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 6
A headlamp: missing, inoperative or more than ½ not functioning in the case of LED
FAIL
Occurrences: 6
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: 5
Smoke opacity levels exceed the manufacturer’s specified limit
FAIL
Occurrences: 5