MERCEDES A 180 SE D (2021)
Running costs, common problems, and reliability data based on 325 real MOT tests in 2024.
MOT Pass Rate
94%
Total Tests (2024)
325
Avg Mileage
32,806 mi
Est. Annual Cost
£1,350
Is the 2021 MERCEDES A 180 SE D reliable?
Excellent reliability. Very few MOT failures. That's 12 points above the national average of 82%. It also outperforms the MERCEDES brand average of 87%.
At 3 years old, 94% of MERCEDES A 180 SE Ds from 2021 passed their MOT first time in 2024. That's based on 325 tests across the UK. The average mileage at this age is 32,806 miles.
How does the 2021 MERCEDES A 180 SE D compare?
Mileage Analysis
The average 2021 MERCEDES A 180 SE D has 32,806 miles on the clock, which is above the expected 22,200 miles for a 3-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.
Best year to buy a MERCEDES A 180 SE D?
The most reliable year is the 2019 model with a 98% MOT pass rate, while the 2020 model has the lowest at 92%. The 2021 sits between the two at 94%.
How much does a 2021 MERCEDES A 180 SE D 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 A 180 SE D by Year
Checking a specific MERCEDES A 180 SE D?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2021 MERCEDES A 180 SE D
The 2021 MERCEDES A 180 SE D is a small family car with a 1461cc diesel engine. 325 of these vehicles were MOT tested in 2024, making it a less common model in the UK market. Among all cars from 2021, the average MOT pass rate is 92%, and this model beats that benchmark.
With an average of 32,806 miles at 3 years old, MERCEDES A 180 SE D owners cover more miles than the average driver.
2021 MERCEDES A 180 SE D Fuel Costs
The 1461cc diesel engine offers a reasonable balance between performance and economy. Expect around 55 mpg in mixed driving, which works out to roughly £905 per year at current diesel prices of 148p per litre (based on 7,400 miles per year).
What does it cost to own a 2021 MERCEDES A 180 SE D?
Total estimated annual running cost is £1,350 (£113/month), broken down as £905 fuel, £190 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 94% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
MERCEDES A 180 SE D Reliability Trend
Older MERCEDES A 180 SE Ds tend to have better MOT pass rates than newer ones, with an average decline of 5 percentage points across model years.
Buying a Used 2021 MERCEDES A 180 SE D
At 3 years old, this is still relatively fresh. You may find examples with remaining manufacturer warranty. Depreciation is slowing but hasn't bottomed out yet. If you're flexible on year, the 2019 model has the highest pass rate at 98%.
Alternatives to the 2021 MERCEDES A 180 SE D
The MERCEDES A 180 SE D is actually the most reliable option among similar diesel small family cars from this era. Here are comparable diesel cars with similar engines:
- FORD FOCUS (2019) 89% pass rate (-5%) from 93,803 tests
- MERCEDES A (2019) 91% pass rate (-3%) from 89,588 tests
- VOLKSWAGEN POLO (2019) 89% pass rate (-5%) from 65,751 tests
- KIA SPORTAGE (2019) 89% pass rate (-5%) from 58,319 tests