MERCEDES C300D (2019)
Running costs, common problems, and reliability data based on 40 real MOT tests in 2024.
MOT Pass Rate
100%
Total Tests (2024)
40
Avg Mileage
54,372 mi
Est. Annual Cost
£1,482
Is the 2019 MERCEDES C300D reliable?
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 5 years old, 100% of MERCEDES C300Ds from 2019 passed their MOT first time in 2024. That's based on 40 tests across the UK. The average mileage at this age is 54,372 miles.
How does the 2019 MERCEDES C300D compare?
Mileage Analysis
The average 2019 MERCEDES C300D has 54,372 miles on the clock, which is above the expected 37,000 miles for a 5-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.
How much does a 2019 MERCEDES C300D 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.
Checking a specific MERCEDES C300D?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2019 MERCEDES C300D
The 2019 MERCEDES C300D is a family car with a 1950cc diesel engine. 40 of these vehicles were MOT tested in 2024, making it a rare model on UK roads. It ranks in the top 2% of all 2019 cars for reliability.
With an average of 54,372 miles at 5 years old, MERCEDES C300D owners cover more miles than the average driver.
2019 MERCEDES C300D 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 C300D?
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 100% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
Buying a Used 2019 MERCEDES C300D
At 5 years old, the MERCEDES C300D offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost. Note: with only 40 tests in our data, these figures should be treated as indicative rather than definitive.
Alternatives to the 2019 MERCEDES C300D
The MERCEDES C300D 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 (-9%) from 127,682 tests
- FORD FOCUS (2019) 89% pass rate (-11%) from 93,803 tests
- MERCEDES A (2019) 91% pass rate (-9%) from 89,588 tests
- MERCEDES A-CLASS (2017) 88% pass rate (-12%) from 82,055 tests