Mercedes Benz Sprinter 315 Progressive Cdi MOT Failures
An analysis of 51,386 real DVSA MOT tests on the Mercedes Benz Sprinter 315 Progressive Cdi — what fails, how often, and how that compares to every other car on UK roads.
Where the Mercedes Benz Sprinter 315 Progressive Cdi fails its MOT
The single biggest MOT failure point on the Mercedes Benz Sprinter 315 Progressive Cdi is parking brake inefficient — this model is 54 times more likely to fail on this item than the average car on UK roads. That makes it a major concern for anyone buying or owning this model. Across 51,386 MOT tests, 3.14% of all Mercedes Benz Sprinter 315 Progressive Cdi tests recorded this as a failure.
Brake failures on the MOT range from worn pads and discs (routine maintenance) to corroded brake lines and seized calipers (more serious). Check for any pulling under braking and listen for grinding.
Other notable weak points include parking brake efficiency less than 50% of the r... (62x the fleet average), lamp missing, inoperative or in the case of a m... (92x the fleet average), light unit fault (7.4x the fleet average), and reflector missing or reflecting white to the rear (12x the fleet average). These ratios compare the Mercedes Benz Sprinter 315 Progressive Cdi's failure rate on each item against the national average for all cars tested — a ratio of 10x means this model fails ten times more often than a typical car.
The failures span 2 categories: Brakes, Lights & Electrics. If you're inspecting a Mercedes Benz Sprinter 315 Progressive Cdi before purchase, these are the areas to focus on — and if any have been flagged as advisories on a previous MOT, they're likely to become failures in the near future.
How failures change with mileage
The Mercedes Benz Sprinter 315 Progressive Cdi's weak points shift as the car covers more miles. Understanding these patterns helps you know what to expect — and what to budget for — at each stage of ownership.
Under 60,000 miles
At this mileage, most failures are either design-related or caused by age rather than wear. Components like bushes and drop links may not have been replaced yet, and original-fit parts can deteriorate even on low-mileage cars that spend a lot of time sitting.
For the Mercedes Benz Sprinter 315 Progressive Cdi specifically, the DVSA data shows the most common failures at this mileage are parking brake efficiency less than 50% of the r... (62x the average) and parking brake inefficient (54x). lamp missing, inoperative or in the case of a m... (24x) and light unit fault (7.4x) also appear frequently.
60,000 to 100,000 miles
This is where routine wear items start to show up. Brake components, tyres, and exhaust parts have done serious work by this point. Cars that have been well serviced will show fewer of these failures — this mileage band is where good maintenance really separates the well-kept from the neglected.
For the Mercedes Benz Sprinter 315 Progressive Cdi specifically, the DVSA data shows the most common failures at this mileage are lamp missing, inoperative or in the case of a m... (92x the average) and parking brake inefficient (16x). parking brake efficiency less than 50% of the r... (15x) and reflector missing or reflecting white to the rear (12x) also appear frequently.
Over 100,000 miles
High-mileage cars accumulate failures across multiple systems. The key question isn't whether things will need doing — they will — but whether the car has been maintained well enough to keep on top of them. Look for a consistent service history and recent MOT passes with minimal advisories.
For the Mercedes Benz Sprinter 315 Progressive Cdi specifically, the DVSA data shows the most common failures at this mileage are parking brake inefficient (10x the average) and reflector defective or damaged by up to 50% of ... (5.7x). parking brake efficiency less than 50% of the r... (5.3x) and parking brake efficiency less than 50% of the r... also appear frequently.
The shift from parking brake efficiency less than 50% of the r... at lower mileages to parking brake inefficient at higher mileages is typical — early failures tend to be design or factory-related, while high-mileage failures reflect accumulated mechanical wear. A car that's been well maintained will usually dodge the worst of both.
What to check before buying a Mercedes Benz Sprinter 315 Progressive Cdi
Based on the MOT failure data and known issues above, here's what to prioritise when inspecting a Mercedes Benz Sprinter 315 Progressive Cdi:
Brakes — check for parking brake inefficient, parking brake efficiency less than 50% of the r.... Lights & Electrics — check for lamp missing, inoperative or in the case of a m..., light unit fault, reflector missing or reflecting white to the rear, reflector defective or damaged by up to 50% of ....
Always check the car's full MOT history for patterns — recurring advisories often become failures within 12 months. Enter any reg into our free car check to see the complete picture.
Looking at a specific Mercedes Benz Sprinter 315 Progressive Cdi?
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Mercedes Benz Sprinter 315 Progressive Cdi MOT FAQs
What are the most common MOT failures on a Mercedes Benz Sprinter 315 Progressive Cdi?
Based on 51,386 DVSA MOT tests, the most common failure is parking brake inefficient — at 54x the national fleet average. Other frequent failures include parking brake efficiency less than 50% of the r... and lamp missing, inoperative or in the case of a m....
Is the Mercedes Benz Sprinter 315 Progressive Cdi reliable based on MOT data?
The Mercedes Benz Sprinter 315 Progressive Cdi has 6 categories where it fails more often than average. The main concern is parking brake inefficient. Always check a specific car's full history before buying.
What MOT failures should I expect at high mileage?
Above 100,000 miles, the Mercedes Benz Sprinter 315 Progressive Cdi most commonly fails on parking brake inefficient and reflector defective or damaged by up to 50% of .... Under 60,000 miles, the main issues are parking brake efficiency less than 50% of the r... and parking brake inefficient.
How do I check a Mercedes Benz Sprinter 315 Progressive Cdi's MOT history?
Enter the registration number into our free car check above. You'll see every MOT test result, advisories and failures, mileage readings, write-off status, and finance checks.
MOT failure data sourced from DVSA bulk test records via data.gov.uk. Ratios compare this model's failure rate against the national fleet average. Known issues sourced from manufacturer bulletins, specialist workshops, and verified owner reports.