Au7o mascotAu7o
Known IssuesTest Hub demo
  1. Au7o
  2. /
  3. Known Issues
  4. /
  5. Peugeot
  6. /
  7. 508
Peugeot · Known Issues

2012 Peugeot 508 Problems: 2 Known Issues

2012 model year · 65+ owner reports · Updated September 2026

Share:@au7o.io

2012 · All trims · All engines

Choose the year and equipment for your written issues and visual request.

No email neededHow interest is saved

Interest applies to the selected vehicle and configuration; it is not a reservation. Voting stores a first-party identifier for up to 180 days to prevent repeat votes. No account or email is needed. Clearing cookies or using another device may count separately. Privacy

Visual coming soon

Your interest helps us choose what to build next.

Visual Known Issues · Coming soon

$4.99/month plus taxes at launch · No payment today

Preview the XT6 example
Known IssuesMotorcycle IssuesDTC LookupDrivePricingAboutTermsPrivacyCookiesConsentData rightsCopyrightFeedback
Share:@au7o.io

Vehicle data and repair guidance on this site are compiled with AI assistance and may contain errors. Always verify with your service manual or a qualified mechanic.

Data protection representation

DataRep representative in the United KingdomDataRep representative in the European Union
Au7o · 2026
Built for DIY mechanics. Privacy-first.
Explore free Hub demo
Issue summary

According to Au7o's analysis of 65+ owner reports, the 2012 Peugeot 508 has 2 documented known issues, with 2 rated critical. The most serious are Diesel DPF Regeneration Issues ($300-$2,500 repair) and 1.6 THP (EP6) Timing Chain Stretch and Soft Chain Tensioner — Cold-Start Rattle ($900-$1,600 repair). Across all issues with published estimates, repair costs range from $300 to $2,500. DIY maintenance guides at au7o.io.

In This Article

  • 508 Emissions1
  • 508 Engine1
  • FAQ
Get Started
Back to top

In This Article

  • Emissions1
  • Engine1
  • FAQ

All 2 Known Issues

Filter:
ALL YEARS2026202520242023202220212020201920182017201620152014201320122011
Community reported
65 owners

On the 2011-2026 Peugeot 508, the 508 diesel suffers from DPF regeneration failures, particularly on first-generation models with the additive DPF system. Frequent short journeys prevent the regeneration cycle from completing, leading to progressive soot buildup.

This issue also affects: Citroen Berlingo, Citroen C4, Citroen C5 Aircross

Common Symptoms

  • DPF warning indicator
  • Power loss
  • Limp mode
  • Excessive exhaust particulates

How to Fix

Perform forced DPF regeneration via diagnostic tool. Top up the Eolys additive system. For severely blocked units, professional off-car DPF cleaning is recommended before resorting to replacement.

Typical repair cost:$300 - $2,500

Research This Issue

Based on 65 owner reports

GoogleRedditYouTubeNHTSA
Community Reported
High Confidence65 owner reports

On the 2011-2018 Peugeot 508, the 508 I's 1.6 THP petrol is the PSA/BMW-developed EP6 'Prince' engine, whose timing chain and tensioner are a documented weak point. The root problem is not the chain itself but an over-soft hydraulic chain tensioner that bleeds off oil pressure when the engine is shut down; on the next cold start the slack chain rattles against its guides for anything from a couple of seconds to half a minute until pressure builds. Left alone, the chain elongates, valve timing drifts, the engine management logs a correlation fault and — in the worst cases — the chain jumps and destroys the valvetrain. The problem became severe enough in Europe that Austrian owners organised a collective complaint action against Peugeot Austria in 2011 over elongated timing chains in 1.6 THP engines, and forum consensus is that later production ran a revised chain and tensioner that reduced but did not eliminate the fault. Diesel HDi/BlueHDi 508s do not share this engine.

This issue also affects: Peugeot 207, Peugeot 208, Peugeot 3008

Common Symptoms

  • Metallic rattle from the timing end for several seconds after a cold start
  • Rhythmic knock from the front of the engine under load
  • Engine management light with camshaft/crankshaft correlation faults
  • Rough idle and reduced power

How to Fix

Treat a cold-start rattle as the diagnostic trigger, not a nuisance — get the chain, tensioner and guides inspected the first time it appears rather than waiting for a fault code. Replace the chain kit as a set (chain, tensioner, guides and sprockets); replacing a stretched chain while leaving the original soft tensioner is the classic repeat-failure. Keep oil changes short and use the correct low-SAPS specification, because tensioner and chain wear on this engine track directly with oil condition and stretched intervals. Budget roughly EUR 1,000-1,500 for the chain job; a quote several times that indicates consequential valvetrain damage has already occurred.

Typical repair cost:$900 - $1,600

Research This Issue

GoogleRedditYouTubeNHTSA
Community Reported
Low ConfidenceVerifiedReviewed Aug 2026
🔧
A mechanic who knows YOUR exact car
Answers tuned to your year, make, model & trim — not generic advice. Save your garage so it always has the right context.
Get ahead of Peugeot 508 problems — free
Leave your email and we'll alert you the moment there's a new recall or known issue for your Peugeot 508. Free, no account needed.

Don't see your problem? Describe your symptoms to get a diagnosis, or get a full repair guide.

Other Peugeot Models

Peugeot 3089Peugeot 30089Peugeot 2069Peugeot 2088Peugeot 50086Peugeot 20084

Frequently Asked Questions

What are the most common Peugeot 508 problems?

According to Au7o's analysis of 65+ owner reports, the 2012 Peugeot 508 has 2 documented issues. The most frequently reported are: Diesel DPF Regeneration Issues, 1.6 THP (EP6) Timing Chain Stretch and Soft Chain Tensioner — Cold-Start Rattle. Of these, 2 are rated critical and should be addressed promptly.

Is the Peugeot 508 reliable?

The 2012 Peugeot 508 has 2 known issues documented across 65+ owner reports. 2 issues are rated critical: Diesel DPF Regeneration Issues and 1.6 THP (EP6) Timing Chain Stretch and Soft Chain Tensioner — Cold-Start Rattle. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Peugeot 508 problems?

Repair costs for known Peugeot 508 issues range from $300 to $2,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Diesel DPF Regeneration Issues, typically costs $300-$2,500 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2011-2026 Peugeot 508 Diesel DPF Regeneration Issues?

The 508 diesel suffers from DPF regeneration failures, particularly on first-generation models with the additive DPF system. Frequent short journeys prevent the regeneration cycle from completing, leading to progressive soot buildup. Repairs typically run $300-$2,500. Severity: high.

What is the 2011-2018 Peugeot 508 1.6 THP (EP6) Timing Chain Stretch and Soft Chain Tensioner — Cold-Start Rattle?

The 508 I's 1.6 THP petrol is the PSA/BMW-developed EP6 'Prince' engine, whose timing chain and tensioner are a documented weak point. The root problem is not the chain itself but an over-soft hydraulic chain tensioner that bleeds off oil pressure when the engine is shut down; on… Repairs typically run $900-$1,600. Severity: high.

Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.

Data sourced from 65+ owner reports, NHTSA recalls, TSBs, and automotive forums.