Peugeot 508 Hybrid 225 Mk2 Reliability

Stylish executive plug-in hybrid combining a 1.6 PureTech petrol engine with a 81 kW electric motor for around 50 km of EV range. Comfortable cruiser with a sharp interior, popular as a company car in Western Europe. Battery overheating recall affects most early cars - VIN check is essential before purchase.· more· less

Refined hybrid drivetrain Generous standard equipment

Battery overheating recall Auxiliary belt failures reported

Buy if: You want a comfortable plug-in executive sedan with a verified battery recall fix and full Peugeot service history.

Avoid if: The car has any pending recall, unexplained battery warnings, or no documented dealer hybrid health check.

Maintenance costs

€1,000 - €1,700/year

15,000 km/year

Fixed costs

€600-1,000

Risk buffer

€400-700

Common Problems

High-voltage battery overheating (recall)

€0 - 8,0001 of 5

Recall affects most 2019-2022 cars - faulty battery cells can overheat and cause fire · more· less

A major safety recall covers Peugeot 508 PHEV vehicles built between 12 March 2019 and 8 December 2022 (over 43,000 cars worldwide). Affected high-voltage batteries can overheat and ignite. Under recall, Peugeot performs a software update and inspects/replaces the battery free of charge. If completed, risk is removed; if pending, the car should not be charged until the recall is performed. Always verify recall status by VIN with a Peugeot dealer before purchase.

Auxiliary/alternator drive belt failure

€600 - 2,5002 of 5

Auxiliary belt snaps prematurely due to poor tension or alternator bearing wear · more· less

Multiple PHEV 508 owners report auxiliary belt failures, often well before the 100,000 km service interval. Causes include poor factory tension, alignment issues, and alternator bearing wear. When the belt snaps it can damage other components. Inspection at every service is essential, and many specialists recommend preventive replacement around 60,000-80,000 km on PHEV variants.

Hybrid system faults and limp mode

€300 - 3,5003 of 5

‚Hybrid system fault' warning and reduced power, often linked to battery management · more· less

Forum reports describe cars going into limp mode after extended hybrid driving, with speed dropping from 90 km/h to 35 km/h as a protective measure tied to battery thermal management. Many cases are resolved by software updates - one owner reportedly needed 12 updates to fully fix a 12V drain issue. Software remedies are usually free at the dealer, but if the high-voltage battery itself is degraded, costs escalate quickly.

12V battery drain and electronic glitches

€150 - 8004 of 5

12V battery flattens within days due to module wake-up faults · more· less

A widely reported software glitch keeps modules awake after shutdown, draining the 12V battery within 3-7 days. Multiple firmware updates were issued. Many cars on the used market have already had the fix applied, but verify the latest dealer software is installed. A simple battery replacement plus update typically resolves the issue.

e-EAT8 transmission shift quality

€150 - 1,5005 of 5

Rough or hesitant shifts in stop-start traffic, often due to fluid degradation · more· less

The Aisin-sourced e-EAT8 8-speed automatic can develop jerky 1-2 shifts or torque converter shudder in slow traffic once the fluid has degraded. Peugeot does not officially require a fluid change, but specialists recommend a flush around 80,000-100,000 km to prevent this. A flush is relatively cheap; ignoring it can lead to mechatronic wear.

Recall and hybrid health checks are essential

The 508 Mk2 PHEV is comfortable and well-equipped but carries a serious battery overheating recall plus a track record of auxiliary belt and hybrid system glitches. A car with the recall completed, recent software updates, and a documented battery health check is much lower risk than one without.

Pre-Purchase Inspection Checklist

General checks

Service history
Full Peugeot dealer or specialist records, with hybrid health checks documented.
Tires
Check tread depth, age, and uneven wear - PHEVs are heavy and chew through tires.
Cold start
Start engine cold, listen for belt squeal or unusual noises.
Test drive
Minimum 30 minutes including highway and stop-start traffic to test hybrid behavior.

Specific for this vehicle

Verify battery overheating recall completed
Critical safety recall on 2019-2022 cars. Check VIN with Peugeot dealer before purchase.
Confirm latest software updates installed
12V drain and hybrid management updates must be applied. Ask dealer for update log.
Inspect auxiliary belt condition
Look for cracks, fraying, or alternator noise. Consider preventive replacement after 60,000 km.

+ 3 more checksShow less

Test full EV range on a charged battery
Charge fully and drive in EV mode. Should achieve at least 40 km in mixed driving.
Check for hybrid system warning lights
Any past or present ‚Hybrid system fault' message warrants a dealer scan before buying.
Check e-EAT8 shift quality
Test stop-start traffic for jerky 1-2 shifts or torque converter shudder.

Recalls and Technical Service Bulletins

High-voltage traction battery overheating, fire risk (2019-2022) Critical - verify completed

Charging cable / wiring related campaigns on early PHEV cars Verify completed

Software updates for hybrid management and 12V drain Verify applied

Contact a Peugeot dealer with the VIN to verify all recalls have been completed. The traction battery recall is critical - do not buy or charge an affected car until the work is documented.

Warranty Status

Factory warranty (2 years) Expired on most cars

Hybrid battery warranty (8 years / 160,000 km, 70% capacity) Active on most 2019-2023 cars

Rust perforation warranty 12 years

The 8-year traction battery warranty is the most valuable remaining coverage. Check capacity test results at the dealer to confirm the battery is still above the 70% threshold.

Sources: Research draws on model-specific owner forums and owner communities, recall information from official authorities, German automotive press, and multiple workshop cost references cross-checked against each other.

This report is for informational purposes only and does not constitute professional advice. Estimates may be inaccurate. Always have a qualified specialist inspect the vehicle before purchase. We accept no liability for decisions made based on this information.

Peugeot 508 Hybrid 225 Mk2

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