MERCEDES B (2022)
Running costs, reliability data, and common problems from 34 real MOT tests.
Annual Cost
£1,587
£132/month
MOT Pass Rate
100%
Excellent
Road Tax
£195
Flat rate/year
Insurance
Grp 8-20
1332cc Petrol
Great Choice
100% pass rate, £1587/year to run. 18 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 18 points above the national average of 82%. It also outperforms the MERCEDES brand average of 87%.
At 4 years old, 100% of MERCEDES Bs from 2022 passed their MOT first time in 2026. That's based on 34 tests across the UK. The average mileage at this age is 23,239 miles.
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Mileage Analysis
23,239
Average miles
29,600
Expected for age
The average 2022 MERCEDES B has 23,239 miles on the clock, which is below the expected 29,600 miles for a 4-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 2022 sits between the two at 100%.
MERCEDES B by Year
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About the 2022 MERCEDES B
The 2022 MERCEDES B is a small family car with a 1332cc petrol engine. 34 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. It ranks in the top 9% of all 2022 cars for reliability.
With an average of 23,239 miles at 4 years old, MERCEDES B owners tend to use this car less than the typical driver.
2022 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 2022 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 100% 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 2022 MERCEDES B
At 4 years old, the MERCEDES B offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost. If you're flexible on year, the 2021 model has the highest pass rate at 95%. Note: with only 34 tests in our data, these figures should be treated as indicative rather than definitive.
Common Issues to Watch For
Based on the 2022 MERCEDES B's fuel type, age, and engine size, these are the most likely problem areas to check.
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 2022 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(2022) | 100% | £1137 | £195 | Grp 8-20 | £1587 |
| NISSAN QASHQAI(2020) | 93% | £1137 | £190 | Grp 12-25 | £1582-£5 |
| MINI COOPER(2020) | 93% | £1137 | £190 | Grp 12-25 | £1582-£5 |
| FORD FIESTA(2020) | 91% | £955 | £190 | Grp 1-8 | £1400-£187 |
| AUDI Q2(2020) | 94% | £955 | £190 | Grp 1-8 | £1400-£187 |
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
Explore other Mercedes cars or similar models in the same category.
MERCEDES A
2019 · 1461cc Diesel
MERCEDES C
2017 · 1991cc Hybrid
MERCEDES A-CLASS
2017 · 1461cc Diesel
NISSAN QASHQAI
2020 · 1598cc Petrol
MINI COOPER
2020 · 1499cc Petrol
FORD FIESTA
2020 · 998cc Petrol
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