MERCEDES B (2019)
Running costs, reliability data, and common problems from 6,624 real MOT tests.
Annual Cost
£1,587
£132/month
MOT Pass Rate
93%
Excellent
Road Tax
£195
Flat rate/year
Insurance
Grp 8-20
1332cc Petrol
Great Choice
93% pass rate, £1587/year to run. 11 points above average.
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Annual Running Costs
~42 mpg
Flat rate (post-2017)
Low estimate due to excellent reliability
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT data. Insurance not included.
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Reliability Verdict
Excellent reliability. Very few MOT failures. That's 11 points above the national average of 82%. It also outperforms the MERCEDES brand average of 87%.
At 7 years old, 93% of MERCEDES Bs from 2019 passed their MOT first time in 2026. That's based on 6,624 tests across the UK. The average mileage at this age is 30,255 miles.
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How Does It Compare?
Mileage Analysis
30,255
Average miles
51,800
Expected for age
The average 2019 MERCEDES B has 30,255 miles on the clock, which is below the expected 51,800 miles for a 7-year-old car. This suggests lighter use than average, which generally means less wear on major components.
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Best Year to Buy?
The most reliable year is the 2021 model with a 95% MOT pass rate, while the 2018 model has the lowest at 91%. The 2019 sits between the two at 93%.
MERCEDES B by Year
Similar Cars to Consider
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About the 2019 MERCEDES B
The 2019 MERCEDES B is a small family car with a 1332cc petrol engine. 6,624 of these vehicles were MOT tested in 2026, making it a reasonably common sight on UK roads. Among all cars from 2019, the average MOT pass rate is 90%, and this model beats that benchmark.
With an average of 30,255 miles at 7 years old, MERCEDES B owners tend to use this car less than the typical driver.
2019 MERCEDES B Fuel Costs
The 1332cc petrol engine offers a reasonable balance between performance and economy. Expect around 42 mpg in mixed driving, which works out to roughly £1,137 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).
What does it cost to own a 2019 MERCEDES B?
Total estimated annual running cost is £1,587 (£132/month), broken down as £1137 fuel, £195 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 93% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
MERCEDES B Reliability Trend
The MERCEDES B has maintained consistent MOT pass rates across model years, varying by only 3 percentage points.
Buying a Used 2019 MERCEDES B
At 7 years old, this is a solid used buy if you find one with good service history. Depreciation has levelled off, so you won't lose much more value. Focus on condition over mileage. If you're flexible on year, the 2021 model has the highest pass rate at 95%. With 6,624 MOT tests in our data, there's strong statistical confidence in these figures.
Common Issues to Watch For
Based on the 2019 MERCEDES B's fuel type, age, and engine size, these are the most likely problem areas to check.
Suspension Wear
Medium riskShock absorbers, springs, and anti-roll bar links typically need attention around this age. Listen for clunks over bumps and check for uneven tyre wear.
Service History
Low riskAlways request a full service history. Regular servicing is the single best indicator of how well a car has been maintained, regardless of mileage.
Running Costs Compared
How the 2019 MERCEDES B stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| MERCEDES B(2019) | 93% | £1137 | £195 | Grp 8-20 | £1587 |
| FORD FIESTA(2018) | 90% | £955 | £190 | Grp 1-8 | £1400-£187 |
| FORD FOCUS(2017) | 89% | £1137 | £190 | Grp 12-25 | £1732+£145 |
| NISSAN QASHQAI(2017) | 86% | £955 | £190 | Grp 5-15 | £1550-£37 |
| VAUXHALL CORSA(2017) | 82% | £1137 | £190 | Grp 8-20 | £1732+£145 |
Estimates based on 7,400 miles/year, current fuel prices, and MOT data. Insurance groups are indicative. Actual costs vary by driver, location, and usage.
Related Mercedes Models
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FORD FIESTA
2018 · 998cc Petrol
FORD FOCUS
2017 · 1596cc Petrol
NISSAN QASHQAI
2017 · 1200cc Petrol
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