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Peugeot 508 reliability, MPG and running costs

Figures updated

The Peugeot 508 is a large family car. In 2024 MOT tests it scored 105 for reliability (100 is average), ranking 227 of 442, and 28.8% failed first time against a UK average of 28.5%. Its most common MOT failure is tread depth (3.9% of tests).

105Above average

Ranked 227 of 442 cars in the 2024 MOT Reliability League, and 12 of 16 large family cars

In 2024, 18,394 Peugeot 508s aged 3 to 20 had an MOT and 28.8% failed first time (UK average 28.5%). Taking age and mileage into account, the Peugeot 508 is 5% less likely to fail than the average car of the same age and mileage. At the first MOT, at three years old, 19.0% failed (UK 12.7%).

First-time fail rate

28.8%

UK 28.5%

Fail rate at 3 years

19.0%

UK 12.7%

Average miles a year

10,900

Typical age at test: 10 years

Peugeot 508 MOT failure rate by age

0%10%20%30%40%35791113UK average 39%508 33%

Most common Peugeot 508 MOT faults

  1. Tread depth: tread depth below requirements of 1.6mm3.9% of tests
  2. Coil spring: fractured or broken3.3% of tests
  3. Brake pads: less than 1.5 mm thick3.0% of tests
  4. Registration plate lamp(s): inoperative in the case of a single lamp or all lamps2.5% of tests
  5. Wipers: does not clear the windscreen effectively2.4% of tests
  6. Joints: constant velocity boot split or insecure, no longer prevents the ingress of dirt2.3% of tests

What the Peugeot 508 fails on

AreaTests failingvs similar cars
Lights and electrics10.3%▼ 14% less often
Suspension7.9%▼ 18% less often
Tyres7.8%About average
Brakes6.5%About average
Visibility5.2%▲ 1.1× as often
Body and structure3.1%About average
Exhaust and emissions2.3%▼ 27% less often
Steering1.0%▼ 55% less often
Seat belts and airbags0.6%▼ 35% less often
Wheels0.6%▲ 1.2× as often

What MPG does the Peugeot 508 do?

Official economy for the Peugeot 508 ranges from 42.3 to 80.7mpg across the 147 versions listed by the Vehicle Certification Agency (2012–2024). A typical petrol version manages 44mpg and a typical diesel 62mpg. Expect 10–15% less in real-world driving.

Work out a journey's fuel cost

How much is road tax on a Peugeot 508?

Any Peugeot 508 first registered from April 2017 pays the standard rate of £200 a year after its first year (2026/27 rates). A Peugeot 508 registered between March 2001 and March 2017 is taxed on its CO2: £20 to £275 a year.

Work out tax for a specific car

Peugeot 508 specs and running costs

Official figures for 147 versions sold in the UK between 2012 and 2024.

Fuel types

Diesel, Hybrid, Petrol, Plug-in hybrid

Official economy

42.3–80.7 mpg

CO2

23–154 g/km

Power

96–224 PS

VersionFuelEconomyCO2Car taxCompany car tax
508 SW PureTech 130 (VL)96 PS · A8 · listed 2024Petrol49.5 mpg128g£20031%
508 PureTech 130 (VL)96 PS · A8 · listed 2024Petrol49.5 mpg128g£20031%
508 PureTech 130 (VL) (GT)96 PS · A8 · listed 2024Petrol49.5 mpg128g£20031%
508 PureTech 130 (VH)96 PS · A8 · listed 2024Petrol42.3 mpg150g£20036%
508 PureTech 130 (VH) (GT)96 PS · A8 · listed 2024Petrol42.3 mpg150g£20036%
508 SW PureTech 130 (VH)96 PS · A8 · listed 2024Petrol42.7 mpg150g£20036%
508 SW PLUG-IN HYBRID 225 (VH)133 PS · A8 · listed 2024Plug-in hybrid193.6 mpg41g£20014%
508 HYBRID 225 (VH)133 PS · A8 · listed 2024Plug-in hybrid193.6 mpg41g£20014%
508 HYBRID 225 (VH) (GT)133 PS · A8 · listed 2024Plug-in hybrid193.6 mpg41g£20014%
508 SW PLUG-IN HYBRID 225 (VL)133 PS · A8 · listed 2024Plug-in hybrid274.8 mpg28g£20014%
508 HYBRID 225 (VL)133 PS · A8 · listed 2024Plug-in hybrid274.8 mpg28g£20014%
508 HYBRID 225 (VL) (GT)133 PS · A8 · listed 2024Plug-in hybrid274.8 mpg28g£20014%
508 SW PLUG-IN HYBRID 360147 PS · A8 · listed 2024Plug-in hybrid141.9 mpg45g£20016%
508 Fastback Blue HDI 130131 PS · M6 · listed 2023Diesel63.6 mpg116g£20033%
508 SW Blue HDI 130131 PS · M6 · listed 2023Diesel63.6 mpg116g£20033%

Economy and CO2 are official WLTP figures. Car tax is the yearly rate at current rates for a car first registered in the year listed, before any expensive car supplement. Company car tax is the 2026/27 benefit-in-kind rate. Showing the 15 most recent of 147 versions.

What a Peugeot 508 costs to fuel

  • petrol, typical official 44mpg…
  • diesel, typical official 62mpg…

Official figures are usually 10–15% better than real-world driving.

Work out a journey in a Peugeot 508

Buying a used Peugeot 508?

Check the MOT history of the exact car: every result, advisory and mileage reading, free.

Compare the Peugeot 508 with other large family cars

Reliability, economy, car tax and running costs side by side.

Other Peugeot models

Frequently asked questions

›Is the Peugeot 508 reliable?

Its MOT record is better than average: the Peugeot 508 is 5% less likely to fail than the average car of the same age and mileage, with a reliability score of 105 in our 2024 league (100 is average).

›What are common problems with the Peugeot 508?

The most common MOT fault is “Tread depth: tread depth below requirements of 1.6mm”, found in 3.9% of tests.

›What MPG does the Peugeot 508 do?

Official economy for the Peugeot 508 ranges from 42.3 to 80.7mpg across the 147 versions listed by the Vehicle Certification Agency (2012–2024). A typical petrol version manages 44mpg and a typical diesel 62mpg. Expect 10–15% less in real-world driving.

›How much is road tax on a Peugeot 508?

Any Peugeot 508 first registered from April 2017 pays the standard rate of £200 a year after its first year (2026/27 rates). A Peugeot 508 registered between March 2001 and March 2017 is taxed on its CO2: £20 to £275 a year.

›How many Peugeot 508s fail their MOT?

28.8% of Peugeot 508s aged 3 to 20 failed their MOT first time in 2024, and 19.0% failed at their first MOT.

Sources: DVSA anonymised MOT tests 2024, all versions of the Peugeot 508 combined (Open Government Licence v3.0); official economy and CO2 from Vehicle Certification Agency data, © Crown copyright. VCA cannot accept liability for its accuracy. How we calculate the league.