Model Reports 3 min read Updated 18 Oct 2026

Mercedes-Benz Viano 2013: reliability & common MOT faults

In 2025, 68 in every 100 first MOTs on a 2013 Mercedes-Benz Viano were passes.

Summary

With 594 first tests, there are too few to say whether the 2013 Mercedes-Benz Viano differs from the model years either side. Treat the faults below as a checklist.

At a glance

How 594 first tests went in 2025.

Passed first time
68 in every 100
Did not pass first time
32 in every 100192 failed first-attempt tests
The typical car
12 yearsabout 131,032 miles
First tests counted
594

How we count this. Data: UK MOT open data, 2025. Only Class 4 cars on their first MOT of the year are counted. A car that fails and is fixed at the test station still counts as a fail in the first-attempt rate. These are raw results, not adjusted for age, mileage, or peer mix. The MOT does not test engine or gearbox internals.

Note:

These are patterns across 2013 Mercedes-Benz Viano vehicles in 2025, not a prediction that any one car will have them. Faults are grouped by part of the car. They come from MOT defect codes, not manufacturer bulletins, recalls or a diagnosis of any one car.

Lamps and electrical

One fault: side repeater indicators, 7.1 times as often as on similar cars.

Figures below are measured across the 192 failed first attempts in 2025 that had a mileage recorded, which allows a like-for-like comparison.

We only list faults with at least 20 failures and a rate of about 2.0 times that of similar cars, which keeps one-off results out of the list.

Side repeater indicators

Failed on 23 first tests7.1 times as often as similar carsPossible evidence

What it means

Sequential or dynamic direction indicators are not a reason to fail. Where a side repeater is required, it is allowed to be part of the front direction indicator if it has a marked wraparound lens, or an amber light coming through the front lens when viewed from a set distance to the side of the rear bumper. A lens defect with no effect on the emitted light is Minor, and one that adversely affects the light is Major.

Data: UK MOT open data, 2025. Compared with cars of the same age and mileage.

Brakes

One fault: handbrake efficiency below minimum (roller test), 4.0 times as often as on similar cars.

Handbrake efficiency below minimum (roller test)

Failed on 45 first tests4.0 times as often as similar carsLikely evidence

What it means

A parking brake with efficiency below the minimum requirement is Major, and graded Dangerous where efficiency is less than half of the required value. On a roller brake tester, the requirement counts as met if more than half of the wheels of a brake system lock. The check applies only to vehicles whose parking brake was not already tested as the secondary brake.

Data: UK MOT open data, 2025. Compared with cars of the same age and mileage.

MOT pass rates

How first tests ended, and how the pass rates are counted.

Passed first time
68in every 100
Passed on the first test.
Fixed at the station
5in every 100
Failed, then fixed at the test station the same day.
Failed
27in every 100
Did not pass, and were not fixed at the test station.

First-attempt pass 67.7% of 594 first tests (2025): only cars that passed first time count. Official-style pass 72.9%: cars fixed at the test station also count as a pass. The 5 fixed and the 27 not fixed make the 32 in every 100 that did not pass first time.

Same model, other years

Passed first time in every 100, all tested in 2025.

406080100200520102013Older carsNewer cars
40608010020102013Older cars

Newer cars are younger, so look for a jump rather than the climb. A year earlier (2024), when these cars were a year younger, 67 in every 100 passed first time.

YearPassed first timeFirst tests
200561 in every 100326
200664 in every 100335
200764 in every 100395
200866 in every 100424
200965 in every 100392
201063 in every 100389
201167 in every 100432
201266 in every 100517
2013 This car68 in every 100594
201467 in every 100584

FAQs

Short answers about how to read this model-year guide.

With 594 first tests, there are too few to say whether the 2013 Mercedes-Benz Viano differs from the model years either side. Treat the faults below as a checklist. In 2025, 67.7% of 594 first MOTs on the 2013 Mercedes-Benz Viano passed first time (PRS: items fixed at the station the same day, counted as a fail). The official-style rate including PRS is 72.9%. Among 192 failed first-attempt MOT tests (test year 2025), Side repeater indicators appears more often than on similar cars (12.0% of those tests; 23 observed failures; about 7.1× more often than similar cars). There is no single reliability score here; this is a pre-purchase checklist built from DVSA open data, not a guarantee for any individual car.
Among failed first-attempt tests we highlight patterns that appear more often than on similar cars. Top example: Side repeater indicators (12.0% of those tests; 23 observed failures; about 7.1× more often than similar cars). These are statistical signals, not a diagnosis of any individual car.
Side repeater indicators shows up more often than on similar cars (12.0% of those tests; 23 observed failures; about 7.1× more often than similar cars). That does not prove a design fault. Age, mileage, and how the car was used still matter. Treat it as a pre-purchase checkpoint, not a manufacturer service bulletin.
Common MOT problem areas for the 2013 Mercedes-Benz Viano include Side repeater indicators, Handbrake efficiency below minimum (roller test). These are the faults that stand out compared with similar cars, not a complete list of what can go wrong on any individual car.
This page highlights MOT failure patterns for the 2013 Mercedes-Benz Viano (registration year) using UK DVSA open data for the selected test year. Patterns are compared with cars of a similar age and mileage. It is a buyer checklist from MOT defect statistics, not a full service history or manufacturer service-bulletin list.
No. MOT tests do not cover engine internals, gearboxes, or many electronic modules. Patterns here come from MOT defect statistics only and should not be read as engine or gearbox reliability scores.

About this data

How this page is built and what it can (and can't) say.

These figures come from UK MOT open data for this model year. We surface common failure patterns against similar cars, not a full reliability score, and not a pass/fail verdict on any individual vehicle.

2024 2025

What we include

UK Class 4 cars only. Normal MOT tests (not retests); first test per vehicle per calendar year; results pass, PRS, or fail.

Same-day repairs

PRS means the car failed items that were fixed at the test station and then passed the same day. We count PRS as a first-attempt fail in headline rates so same-day repairs do not hide problems.

How we compare

We compare this model year with other Class 4 cars of similar age and mileage in the same test year. This model family is left out of the peer group so the car is not measured against itself.

What this does not cover

  • MOTs do not cover engine internals, gearboxes, or many electronics; this is not a full reliability score.
  • Common faults come from MOT defect stats, not manufacturer TSBs or recalls.
  • Age and mileage matching reduces, but does not remove, differences in how cars were used and maintained.
  • If the data for a car is too thin to say anything useful, we say so rather than guess.

Contains public sector information licensed under the Open Government Licence v3.0.

Check any vehicle’s MOT history

Full MOT history, mileage records, and reliability insights for any UK vehicle.

Run a free check