Mercedes Viano
Reliability, running costs, and MOT data across 12 years from 11,348 real MOT tests.
Avg Pass Rate
79%
Total Tests
11,348
Best Year
2014 (83%)
Years Covered
12
How reliable is the Mercedes Viano?
Mercedes Viano by Year
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About the Mercedes Viano
The Mercedes Viano has been tested 11,348 times in 2024 MOT data across 12 model years (2004 to 2015), with an average pass rate of 79%. That's close to the national average of 82%. Available as diesel and petrol and LP.
Best and Worst Years
The 2014 model is the most reliable with a 83% pass rate from 1,384 tests. The 2006 model has the lowest at 74%. The 9 point spread between years means reliability varies somewhat, but no year is dramatically different.
Reliability Trend
Newer MERCEDES VIANOs show better MOT pass rates than older ones, with an average improvement of 5 percentage points.
Mileage Across Years
The oldest model in our data (2004) averages 107,888 miles, while the newest (2015) averages 152,306 miles. Older models have covered serious mileage, so suspension and drivetrain wear are worth checking.
Compared to the Mercedes brand average of 87%, the Viano is 8 points lower, placing it among the less reliable Mercedes models.
Click any year in the table above to see detailed running costs, individual reliability data, and comparisons with similar cars.