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Peugeot 508 II faults

6 faults documented by at least two sources, listed by version then by mileage at onset when known.

Extra caution
Reliability
2.5/5

6 known faults

PureTech 130 EAT8

  1. Degraded “wet” timing belt (1.2 PureTech)

    Severity 3/3 · Serious

    On the 1.2 PureTech, the timing belt runs in oil and can disintegrate. Its debris clogs the oil strainer, causing oil pressure to drop, which can destroy the engine. Stellantis extended the belt warranty to 10 years or 175,000 km, subject to servicing conditions, and introduced a new-generation belt in June 2022.

    Versions
    PureTech 130 EAT8
    Onset
    not documented
    Repair
    not documented

PureTech 180 EAT8

  1. Faulty electronic throttle body (1.6 PureTech 180)

    Severity 1/3 · Annoying

    On 1.6 PureTech 180s built up to September 2019, the electronic throttle body can malfunction: a diagnostic warning light and loss of power. Its body was later changed from plastic to aluminium, and Peugeot agreed to cover the repair outside warranty. CarVerif then reports mainly isolated cases.

    Versions
    PureTech 180 EAT8
    Onset
    not documented
    Repair
    not documented

BlueHDi 130 EAT8

  1. Premature wear of the timing chain (1.5 BlueHDi)

    Severity 2/3 · Costly

    On the 1.5 BlueHDi (DV5), the timing chain can stretch prematurely because of oil carbonisation; the first sign is a rattle on cold start. A break can damage the engine. Vehicles built between 6 December 2017 and 31 January 2023 are subject to a recall.

    Versions
    BlueHDi 130 EAT8
    Onset
    not documented
    Repair
    not documented

  2. Faulty AdBlue tank and system (BlueHDi diesels)

    Severity 2/3 · Costly

    Owner reviews of the 508 II 2.0 BlueHDi 180 (2018 and 2020) cite AdBlue as a weak point: AdBlue crystallisation in the tank, with towing and several weeks off the road; Peugeot's contribution to the bill was limited to about half in one case. CarVerif also lists the AdBlue system among the warnings on the 1.5 BlueHDi and advises against a car showing an AdBlue or emissions message.

    Versions
    BlueHDi 130 EAT8, BlueHDi 160 EAT8, BlueHDi 180 EAT8
    Onset
    not documented
    Repair
    not documented

BlueHDi 160 EAT8

  1. Faulty AdBlue tank and system (BlueHDi diesels)

    Severity 2/3 · Costly

    Owner reviews of the 508 II 2.0 BlueHDi 180 (2018 and 2020) cite AdBlue as a weak point: AdBlue crystallisation in the tank, with towing and several weeks off the road; Peugeot's contribution to the bill was limited to about half in one case. CarVerif also lists the AdBlue system among the warnings on the 1.5 BlueHDi and advises against a car showing an AdBlue or emissions message.

    Versions
    BlueHDi 130 EAT8, BlueHDi 160 EAT8, BlueHDi 180 EAT8
    Onset
    not documented
    Repair
    not documented

BlueHDi 180 EAT8

  1. Faulty AdBlue tank and system (BlueHDi diesels)

    Severity 2/3 · Costly

    Owner reviews of the 508 II 2.0 BlueHDi 180 (2018 and 2020) cite AdBlue as a weak point: AdBlue crystallisation in the tank, with towing and several weeks off the road; Peugeot's contribution to the bill was limited to about half in one case. CarVerif also lists the AdBlue system among the warnings on the 1.5 BlueHDi and advises against a car showing an AdBlue or emissions message.

    Versions
    BlueHDi 130 EAT8, BlueHDi 160 EAT8, BlueHDi 180 EAT8
    Onset
    not documented
    Repair
    not documented

Hybrid 225 e-EAT8

  1. Battery fire-risk recalls (plug-in hybrid)

    Manufacturer recall

    Several recall campaigns target the traction battery of the plug-in hybrid 508: abnormal cell voltage on vehicles built from 1 October to 13 December 2019, with a risk of overheating and, in extreme cases, fire (recall detailed by Caradisiac), then further campaigns on batteries built from 2019 (overheating, battery management software, water ingress, according to the car-recalls.eu aggregator). Check with the serial number that all the campaigns have been completed.

    Fixed free of charge by a dealer and not counted in the reliability score: ask for proof the work was done (invoice, or a VIN check at a dealer).

    Versions
    Hybrid 225 e-EAT8
    Onset
    not documented
    Repair
    not documented

Price and diagnose repairs

Read fault codes

An OBD scanner plugged in under the steering wheel shows stored fault codes, even with warning lights off: useful during the test drive.

Parts and maintenance

Compare prices of parts for the Peugeot 508 II (timing, brakes, filters) to estimate the repairs to plan for.

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