Mercedes-Benz Viano MOT pass rate and common failures
In 2025, 65.6% of Mercedes-Benz Viano MOT tests were a first-time pass, across 5,003 tests in Great Britain. For all cars it was 71.5%.
Compared with cars of the same age
Older cars fail more often, so a model that’s mostly a few years old will look better than one that’s mostly 12. These figures compare like with like.
At 3–5 years
–
Too few tests at this age to say.
At 6–10 years
69.4%
All cars: 76.1% (6.7 points worse). 382 tests.
At 11 years and over
65.2%
All cars: 61.3% (3.9 points better). 4,573 tests.
Pass rate by age
Figures by age, with typical mileage
| Age (years) | Tests | First-time pass | All cars | Typical mileage |
|---|---|---|---|---|
| 10 | 382 | 69.4% | 70.0% | 133,750 miles |
| 11 | 638 | 65.2% | 66.9% | 133,750 miles |
| 12 | 611 | 67.3% | 64.4% | 136,250 miles |
| 13 | 504 | 66.9% | 62.1% | 146,250 miles |
| 14 | 428 | 66.1% | 60.2% | 156,250 miles |
| 15 | 407 | 62.7% | 58.6% | 148,750 miles |
| 16 | 408 | 67.9% | 57.5% | 146,250 miles |
| 17 | 462 | 64.7% | 57.2% | 158,750 miles |
| 18 | 389 | 64.5% | 57.0% | 141,250 miles |
| 19 | 351 | 61.8% | 57.2% | 136,250 miles |
| 20+ | 375 | 62.9% | 61.4% | 113,750 miles |
Typical mileage is the median reading at the test, to the nearest 2,500 miles.
What fails most often
The share of Mercedes-Benz Viano MOT tests that failed on at least one item in each area, against all cars. A test can fail on several areas at once.
| Area | Viano | All cars |
|---|---|---|
| Lamps, reflectors and electrical equipment | 27.5% | 16.6% |
| Brakes | 18.8% | 10.2% |
| Suspension | 14.5% | 13.7% |
| Tyres | 7.6% | 8.4% |
| Body, chassis, structure | 6.5% | 4.2% |
| Visibility | 5.3% | 5.2% |
| Noise, emissions and leaks | 4.3% | 4.0% |
| Seat belts and supplementary restraint systems | 3.9% | 1.1% |
Most common reasons for failing
- Position lamp: not working failed 3.7% of tests · what this means
- Rbt (sp): efficiency below requirements failed 3.5% of tests
- Side repeaters: not working failed 3.3% of tests
- Stop lamp: not working failed 2.9% of tests · what this means
- Tread depth below requirements of 1.6mm failed 2.7% of tests
- Srs malfunction indicator lamp: warning lamp indicates a fault failed 2.6% of tests · what this means
- Rbt (sp): efficiency less than 50% of the required value failed 2.4% of tests
- Malfunction indicator lamp: inoperative or indicates a malfunction failed 2.3% of tests · what this means
- Condition: has ply or cords exposed failed 2.2% of tests
- Ball joint excessively worn failed 2.2% of tests · what this means
Checking a particular Viano?
See its own MOT history, mileage record and advisories in plain English. Free, no sign-up.
About these figures
- They cover every Viano version DVSA records under this name (engines, trims and generations together), on its first MOT test of each visit. A “pass with rectification” (fixed within an hour) counts as a fail, as in DVSA’s own statistics.
- Cars under three years old are left out, because the few tested that young are mostly taxis.
- Fuel mix of the cars tested: diesel 89.0%, petrol 10.9%, liquefied petrolum gas (lpg) 0.1%.
- A pass rate describes the model, not any one car. How a car has been looked after matters more.
Download these figures (CSV) · Other Mercedes-Benz models · All makes
Source: DVSA anonymised MOT test data for 2025. Contains public sector information licensed under the Open Government Licence v3.0. Our own analysis; not produced or endorsed by DVSA.