MERCEDES B-CLASS (2019)
Running costs, common problems, and reliability data based on 912 real MOT tests in 2024.
MOT Pass Rate
93%
Total Tests (2024)
912
Avg Mileage
29,781 mi
Est. Annual Cost
£1,482
Is the 2019 MERCEDES B-CLASS reliable?
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 5 years old, 93% of MERCEDES B-CLASSs from 2019 passed their MOT first time in 2024. That's based on 912 tests across the UK. The average mileage at this age is 29,781 miles.
How does the 2019 MERCEDES B-CLASS compare?
Mileage Analysis
The average 2019 MERCEDES B-CLASS has 29,781 miles on the clock, which is in line with the expected 37,000 miles for a 5-year-old car, suggesting normal everyday use.
How much does a 2019 MERCEDES B-CLASS cost to run?
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT pass rate data. Insurance not included.
MERCEDES B-CLASS by Year
| Year | Pass Rate | Tests | Avg Mileage |
|---|---|---|---|
| 2020 | 98% | 47 | 23,364 mi |
| 2019 | 93% | 912 | 29,781 mi |
| 2018 | 90% | 6,729 | 39,021 mi |
| 2017 | 88% | 9,693 | 48,392 mi |
| 2016 | 87% | 9,657 | 55,381 mi |
| 2015 | 86% | 9,871 | 64,066 mi |
| 2014 | 83% | 15,382 | 72,344 mi |
| 2013 | 82% | 13,421 | 78,118 mi |
| 2012 | 81% | 11,092 | 83,827 mi |
| 2011 | 73% | 6,779 | 84,302 mi |
| 2010 | 74% | 8,819 | 90,612 mi |
| 2009 | 74% | 8,277 | 95,335 mi |
| 2008 | 71% | 6,925 | 100,673 mi |
| 2007 | 72% | 5,184 | 101,539 mi |
| 2006 | 71% | 4,235 | 103,535 mi |
| 2005 | 73% | 805 | 105,799 mi |
Checking a specific MERCEDES B-CLASS?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2019 MERCEDES B-CLASS
The 2019 MERCEDES B-CLASS is a family car with a 1950cc diesel engine. 912 of these vehicles were MOT tested in 2024, making it a less common model in the UK market. Among all cars from 2019, the average MOT pass rate is 90%, and this model beats that benchmark.
With an average of 29,781 miles at 5 years old, MERCEDES B-CLASS owners drive about as much as the UK average.
2019 MERCEDES B-CLASS Fuel Costs
The 1950cc diesel engine offers a reasonable balance between performance and economy. Expect around 48 mpg in mixed driving, which works out to roughly £1,037 per year at current diesel prices of 148p per litre (based on 7,400 miles per year). Diesel cars of this age should have their DPF (diesel particulate filter) checked, as replacements can be costly.
What does it cost to own a 2019 MERCEDES B-CLASS?
Total estimated annual running cost is £1,482 (£124/month), broken down as £1037 fuel, £190 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-CLASS Reliability Trend
Newer MERCEDES B-CLASSs show better MOT pass rates than older ones, with an average improvement of 14 percentage points.
Buying a Used 2019 MERCEDES B-CLASS
At 5 years old, the MERCEDES B-CLASS offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost.
Alternatives to the 2019 MERCEDES B-CLASS
The MERCEDES B-CLASS is actually the most reliable option among similar diesel family cars from this era. Here are comparable diesel cars with similar engines:
- VOLKSWAGEN GOLF (2017) 91% pass rate (-2%) from 127,682 tests
- FORD FOCUS (2019) 89% pass rate (-4%) from 93,803 tests
- MERCEDES A (2019) 91% pass rate (-2%) from 89,588 tests
- MERCEDES A-CLASS (2017) 88% pass rate (-5%) from 82,055 tests