PEUGEOT 508 (2021)
Running costs, common problems, and reliability data based on 1,948 real MOT tests in 2024.
MOT Pass Rate
88%
Total Tests (2024)
1,948
Avg Mileage
35,816 mi
Est. Annual Cost
£1,632
Is the 2021 PEUGEOT 508 reliable?
Good reliability. Occasional issues but generally solid. That's 6 points above the national average of 82%. It also outperforms the PEUGEOT brand average of 83%.
At 3 years old, 88% of PEUGEOT 508s from 2021 passed their MOT first time in 2024. That's based on 1,948 tests across the UK. The average mileage at this age is 35,816 miles.
How does the 2021 PEUGEOT 508 compare?
Mileage Analysis
The average 2021 PEUGEOT 508 has 35,816 miles on the clock, which is well above the expected 22,200 miles for a 3-year-old car. Check service history carefully, as high-mileage cars need consistent maintenance to stay reliable.
Best year to buy a PEUGEOT 508?
The most reliable year is the 2018 model with a 95% MOT pass rate, while the 2013 model has the lowest at 77%. The 2021 sits between the two at 88%.
How much does a 2021 PEUGEOT 508 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.
PEUGEOT 508 by Year
Checking a specific PEUGEOT 508?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2021 PEUGEOT 508
The 2021 PEUGEOT 508 is a family car with a 1997cc diesel engine. 1,948 of these vehicles were MOT tested in 2024, making it a reasonably common sight on UK roads. It sits in the bottom 83% of 2021 cars for MOT pass rates.
With an average of 35,816 miles at 3 years old, PEUGEOT 508 owners cover more miles than the average driver. High-mileage examples should be checked carefully for wear on suspension, brakes, and drivetrain components.
2021 PEUGEOT 508 Fuel Costs
The 1997cc 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).
What does it cost to own a 2021 PEUGEOT 508?
Total estimated annual running cost is £1,632 (£136/month), broken down as £1037 fuel, £190 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 88% pass rate. Keeping on top of servicing will help avoid surprises.
PEUGEOT 508 Reliability Trend
Newer PEUGEOT 508s show better MOT pass rates than older ones, with an average improvement of 9 percentage points.
Buying a Used 2021 PEUGEOT 508
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 2018 model has the highest pass rate at 95%.
Alternatives to the 2021 PEUGEOT 508
If reliability is your priority, there are 3 similar cars with a higher MOT pass rate. Here are comparable diesel cars with similar engines:
- FORD FOCUS (2019) 89% pass rate (+1%) from 93,803 tests
- FORD KUGA (2019) 91% pass rate (+3%) from 72,831 tests
- VOLKSWAGEN POLO (2019) 89% pass rate (+1%) from 65,751 tests
- FORD TRANSIT CUSTOM (2019) 87% pass rate (-1%) from 59,814 tests