Mercedes Benz B Class (2016)
2016 Mercedes Benz B Class
CarHunch analysed 5,421 real MOT records for the 2016 Mercedes Benz B Class.
Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
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The 2016 B-Class passes its MOT first time at 87.8%, well above the UK average of 80%, but nearly 30% of these cars have recorded a dangerous defect at some point—a significant buyer concern that warrants a full inspection history check. Petrol versions pull ahead at 90.2% pass rate compared to diesel at 87.3%, suggesting the petrol engines are slightly more robust, though the diesel dominates the cohort at 80% of sales.
At 42,000 miles median, these cars are right on trend for their age, yet they're averaging 1.1 failures and 6.5 advisories per test, indicating wear-and-tear issues are creeping in beyond major faults. Before committing to a B-Class, obtain its full MOT history and specifically check for patterns of electrical or suspension work, which tend to be the costliest culprits on Mercedes models of this generation.
The 2016 Mercedes Benz B Class has a decent first-time pass rate (87.8%), but a higher-than-average share of vehicles have had serious defects recorded — the individual vehicle's history matters a lot here.
These stats describe 5,421 vehicles as a group. The specific vehicle you're looking at could be the one good example or the one outlier. Run its registration to find out.
What tends to go wrong
Across 5,421 vehicles — figures show how many had each issue flagged at least once in their MOT history.
Data covers a 3-year window centred on 2016.
See this vehicle's full MOT history & AI hunches
Spot recurring advisories, hidden issues, and how it compares to 5,421 Mercedes Benz B Class cars.
Petrol vs Diesel
Pass rate difference of 2.9 percentage points — worth knowing if you're choosing between the two.
Before you buy a 2016 Mercedes Benz B Class
Based on MOT data from 5,421 vehicles — here's what to check.
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Check the full MOT history.
29.1% of these vehicles have had a dangerous defect recorded -
recurring advisories often signal problems years before they become failures.
Search the reg on CarHunch for the full MOT history, reliability stats and a free AI-powered analysis of that exact vehicle. -
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Brake pipes, sills and subframes are the key areas on a vehicle this age — structural rust is hard to spot without getting underneath. A mechanic will check all of this before you commit, and give you a concrete basis to negotiate on price.
Inspection
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Outstanding finance, insurance write-offs and clocking won't appear in the MOT records — a dedicated history check covers all of this. Our link gets you 20% off automatically.
History
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Pass Rate by Fuel Type
| Fuel type | Vehicles | Pass rate | Avg failures |
|---|---|---|---|
| Diesel (80%) | 4,340 | 87.3% | 1.14 |
| Petrol (16%) | 846 | 90.2% | 0.87 |
| Electric (4%) | 235 | 88.1% | 1.03 |
Colour Breakdown
Based on 77,010 Mercedes Benz B Class vehicles registered in the UK — across all years. From DVLA registration records.
Mileage Distribution
Most 2016 Mercedes Benz B Class vehicles sit in the blue band. If the vehicle you're looking at is outside it, it's either unusually low or high mileage for its age.
Half of all 2016 Mercedes Benz B Class vehicles fall between 30,809 and 54,780 miles.
2016 Mercedes Benz B Class — Still on the Road
Almost all 2016 Mercedes Benz B Classs are still on the road.
Strong survival — 5,171 vehicles still getting MOTs in 2025, 99% of the peak.
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2019–2025.
* The 2020 dip reflects the government's COVID-19 MOT exemption, which allowed certificates to be extended by six months — fewer tests were conducted that year.
MOT History Averages
Or browse all models: Mercedes Benz →
Compare with another model
See how the 2016 Mercedes Benz B Class stacks up against a rival.