65.6%
Mercedes-Benz Viano pass rate
Used Mercedes-Benz Viano buying guide
In 2025, Mercedes-Benz Viano cars passed 65.6% of 5,004 initial MOT tests, 6.7 points below the 72.3% UK average. Here is where it fails and what to check before you buy.
Looking at a specific Viano? Check its finance, write-off, stolen, mileage and keeper history. £15, no account needed.
Mercedes-Benz Viano MOT record in brief
Initial MOT tests in 2025, retests excluded.
72.3%
UK average, all cars
−6.7
percentage points below average
Ranked on pass rate the Viano sits 419th of 575 models in the data. Mercedes-Benz as a brand averaged 77.1%, so this model runs 11.4 points behind its own brand. Mercedes-Benz Viano cars aged 6 to 10 years passed 70.4% of MOT tests in 2025; for examples aged 11 years and over that fell to 65.2%.
A pass rate is not a reliability score. The full Mercedes-Benz Viano MOT record has the pass rate by age, every common failure and how the Viano compares with similar cars.
Viano fuel types
Diesel made up 89% of Mercedes-Benz Viano MOT tests in 2025, against 39.3% across all models in this data. Almost every used example you look at will be a diesel.
Where the Viano fails its MOT
Where Mercedes-Benz Viano cars that failed their 2025 MOT were marked down, as a share of all recorded failure items.
The specific items testers recorded most often were position lamp not working (3.9%), rbt (sp) efficiency below requirements (3.7%) and side repeaters not working (3.5%). See every common Viano MOT failure.
These are DVSA failure records across every Mercedes-Benz Viano that failed, not a claim that every Viano has these problems.
What should you check when buying a used Viano?
The areas above, most common first, and what an MOT tester looks at in each.
1
Lamps, reflectors and electrical equipment
Walk round with every light on: headlights, brake lights, indicators, fog lights and the number plate lamp. Check no warning lights stay on after starting. 30% of Viano failure items.
2
Brakes
Make sure the pedal feels firm, the car stops in a straight line, the handbrake holds on a slope and no brake warning light is showing. 20.4% of Viano failure items.
3
Suspension
Listen for knocks over bumps, check the car sits level, and look for leaking shock absorbers and split rubber gaiters. 15.7% of Viano failure items.
4
Tyres
Check tread depth across the full width of every tyre (the legal minimum is 1.6mm), and look for cuts, bulges and uneven wear. 8.1% of Viano failure items.
5
Body, chassis, structure
Look underneath and along the sills for corrosion, and check for damaged or poorly repaired panels. 6.9% of Viano failure items.
None of this replaces the car's own record. Run a free MOT history check on the registration to see every test, advisory and recorded mileage for that car.
What the MOT record doesn't tell you
Knowing Mercedes-Benz Viano failures cluster around lamps, reflectors and electrical equipment and brakes tells you what to inspect. It tells you nothing about whether the car is safe to buy. An MOT does not show money still owed on the car, a write-off, a theft record or a clocked odometer.
Check the exact Viano you are looking at. One £15 report, instant results, backed by a £30,000 data guarantee. More on the Mercedes-Benz history check.
- Outstanding finance
- Write-off records
- Stolen markers
- Mileage history
- Previous keepers
Other used Mercedes-Benz models
The most-tested Mercedes-Benz models in 2025, with how their MOT pass rate compares with the Viano.
- Used Mercedes-Benz A-Class 78.4% MOT pass rate
- Used Mercedes-Benz C-Class 74.7% MOT pass rate
- Used Mercedes-Benz E-Class 77.4% MOT pass rate
- Used Mercedes-Benz GLA 83.3% MOT pass rate
- Used Mercedes-Benz Vito 67.3% MOT pass rate
- Used Mercedes-Benz GLC 86.4% MOT pass rate
See all 35 Mercedes-Benz models ranked by MOT pass rate.
Used Mercedes-Benz Viano FAQs
Is the Mercedes-Benz Viano reliable?
MOT data does not measure reliability. It records whether a car met the roadworthiness standard on the day of its test. What it does show is a 65.6% first-time pass rate for the Mercedes-Benz Viano across 5,004 tests in 2025, below the 72.3% average for all cars.
Do older Mercedes-Benz Viano cars fail their MOT more often?
Mercedes-Benz Viano cars aged 6 to 10 years passed 70.4% of MOT tests in 2025; for examples aged 11 years and over that fell to 65.2%. On an older example, the car's own MOT history tells you more than the model average.
What should I check before buying a used Mercedes-Benz Viano?
On the car itself, start with the areas it most often fails on: lamps, reflectors and electrical equipment, brakes and suspension. Then check the individual car's history: outstanding finance, insurance write-off records, stolen markers, mileage and previous keepers. None of these appear in the MOT record or on the V5C.
How do I check a Mercedes-Benz Viano's history?
Enter the registration of the specific car. A Carpeep car history check reports outstanding finance, write-off category, stolen markers, mileage history, previous keepers, MOT and tax status, import and export markers and scrapped status in one £15 report.
MOT figures are aggregated from the DVSA MOT Anonymised data set for 2025 (class 4 initial tests, retests excluded), licensed under the Open Government Licence v3.0. MOT results describe roadworthiness at test, not mechanical reliability.