Quick Facts — Peugeot 508

Est. On UK Roads
80,000+
Years Made
2011–present
Common Engines
1.6 PureTech, 1.8 PureTech, 2.0 PureTech, 1.6 HDi, 2.0 HDi, Hybrid

6 Most Common Peugeot 508 Problems

These are the faults most frequently seen on the Peugeot 508 by UK garages — ranked by how commonly they occur and what they cost to fix.

1
Timing Chain (1.6 PureTech MK2)
High Priority
The 1.6 PureTech in the MK2 508 carries the timing chain tensioner risk shared across PSA Group. A cold-start rattle needs immediate investigation.
💷 Typical repair cost: £600–£1,800
2
DPF and EGR (2.0 HDi)
High Priority
High-mileage fleet 508 HDi models develop DPF blockages and EGR carbon buildup. Very common on ex-company car examples.
💷 Typical repair cost: £200–£1,500
3
EAT8 Gearbox Hesitation
Watch
The EAT8 automatic can develop hesitation and shudder. Software updates from Peugeot address many instances.
💷 Typical repair cost: £0–£2,000
4
Hybrid PHEV Battery (MK2)
Watch
MK2 508 PHEV models are showing reduced electric range and occasional charging system faults as batteries age.
💷 Typical repair cost: £500–£4,000
5
Air Suspension Failure (if fitted)
Watch
508 models fitted with air suspension can develop compressor and air bag faults causing uneven ride height.
💷 Typical repair cost: £400–£1,500
6
i-Cockpit Display Faults
Low Priority
The MK2's digital cockpit can develop pixel failures and connectivity issues.
💷 Typical repair cost: £200–£700

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Peugeot 508 — MOT Tips

PureTech timing chain check on MK2 models. DPF warning is a fail on diesel models. Air suspension must sit level and operate correctly. Check all warning lights are clear before booking the test.

Engine management light on before your MOT? It's an automatic fail. Run a Find Your Problem Now → to get the likely cause and repair cost before booking the test.

Peugeot 508 Tyres

Most Peugeot 508 models run 225/55 R17 or 235/45 R18 or 245/40 R19 depending on trim level and year. Always check the placard inside the driver's door for the exact size for your vehicle.

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Frequently Asked Questions

What is the most common problem with the Peugeot 508?

The most frequently reported issue on the Peugeot 508 is Timing Chain (1.6 PureTech MK2). The 1.6 PureTech in the MK2 508 carries the timing chain tensioner risk shared across PSA Group. A cold-start rattle needs immediate investigation.

How many Peugeot 508s are on UK roads?

There are an estimated 80,000+ Peugeot 508s currently on UK roads.

What tyres does the Peugeot 508 use?

Most Peugeot 508 models run 225/55 R17 or 235/45 R18 or 245/40 R19 depending on trim level and year. Always check the placard inside the driver's door for the exact size for your vehicle.

Will a warning light fail my Peugeot 508's MOT?

PureTech timing chain check on MK2 models. DPF warning is a fail on diesel models. Air suspension must sit level and operate correctly. Check all warning lights are clear before booking the test.

Similar Issues on Other Models

Audi A4 — another DPF and EGR case worth knowing about Audi A5 — shares the same DPF and EGR problem

Summary

The 508 is a genuinely stylish premium car at competitive used prices. PureTech timing chain health on the MK2 and DPF condition on fleet diesel examples are the priority checks. Service history is essential.

If your Peugeot 508 has a warning light on or a symptom you can't identify, a Find Your Problem Now → gives you likely fault causes, UK repair cost estimates and MOT risk — instantly.

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Other Peugeot Models

Peugeot 208 → Peugeot 308 → Peugeot 2008 → Peugeot 3008 →