Mercedes Benz Sprinter 314 Premium CDI (2021)

709 real MOT outcomes analysed • 77.5% first-time pass rate

2021 Mercedes Benz Sprinter 314 Premium CDI

CarHunch analysed 709 real MOT records for the 2021 Mercedes Benz Sprinter 314 Premium CDI. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.

The 2021 Mercedes-Benz Sprinter 314 Premium CDI has a first-time pass rate of 77.5%, slightly below the UK average of 80%, and 14.8% of vehicles have recorded a dangerous defect at some point—a moderately concerning figure for a commercial workhorse. This suggests reliability is reasonable but not outstanding, and buyers should factor in the elevated risk of serious faults.

At a median mileage of 56,500 miles for a three-year-old van, these Sprinters are running relatively hard, yet they're averaging only 0.68 failures per MOT and 2.5 advisories—fairly typical wear-and-tear for a commercial vehicle under load. Before buying, have a pre-purchase inspection focus on the cooling system, electrical harnesses, and transmission mounts, as these commonly accumulate issues on high-mileage examples.

Average reliability 2.5% below UK average
77.5%
pass MOT first time
UK average: ~80%
56,499
typical mileage
38,859–73,549 middle half
14.8%
ever had a dangerous defect
recorded at any MOT
0.68
avg MOT failures per car
over 2.7 tests on record

What to check before buying a 2021 Mercedes Benz Sprinter 314 Premium CDI

Practical pre-purchase checks for this age and model.

  • 📋 Check the full MOT history. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. Enter the reg below for a full AI analysis.
  • 🔍 Inspect for corrosion in person. Brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that's expensive to fix and can fail an MOT.
  • 🛞 Check tyres and brakes. The most common advisory items at this age. Budget for replacement if they're near the limit — factor this into your offer price.
  • 📄 Run an HPI check. The MOT history won't show outstanding finance, insurance write-offs, or stolen status — an HPI check will.

Before you buy a Mercedes Benz Sprinter 314 Premium CDI

MOT history is one piece of the puzzle. These checks can reveal what CarHunch can't.

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Mileage Distribution

Most 2021 Mercedes Benz Sprinter 314 Premium CDI vehicles sit in the blue band. If the car you're looking at is outside it, it's either unusually low or high mileage for its age.

38,859
low mileage
56,499
typical
73,549
high mileage

Half of all 2021 Mercedes Benz Sprinter 314 Premium CDI vehicles fall between 38,859 and 73,549 miles.

MOT History Averages

2.7
Avg MOT tests per vehicle
0.68
Avg failures per vehicle
2.5
Avg advisories per vehicle

Found a specific Mercedes Benz Sprinter 314 Premium CDI?

Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.

UK

Other model years — Mercedes Benz Sprinter 314 Premium CDI:

2020