Question 1

What is the 1.6 HDi/BlueHDi turbo and DPF issues issue on the Peugeot 508 (Gen 1)?

Accepted Answer

Needs strict oil changes to protect the turbo. Estimated repair cost: £300–£1,200.

Question 2

What is the AdBlue System Faults (BlueHDi) issue on the Peugeot 508 (Gen 1)?

Accepted Answer

The AdBlue tank, pump and injector on later BlueHDi models can fail, triggering UREA warnings and eventually a non-start countdown. Replacing the complete tank assembly is the usual fix and is costly. Symptoms include: UREA warning light, Engine management light, No-start countdown. Estimated repair cost: £800–£1,500.

Question 3

What is the Electric Power Steering (EPAS) Failure issue on the Peugeot 508 (Gen 1)?

Accepted Answer

The electrically-assisted steering can develop heavy or unassisted feel at low speed. The EPAS column is a known PSA weak point on this generation. Symptoms include: Heavy steering at low speed, Power steering warning light, Intermittent loss of assistance. Estimated repair cost: £400–£900.

Question 4

What is the Rear Suspension Bush Wear issue on the Peugeot 508 (Gen 1)?

Accepted Answer

The rear suspension trailing arm bushes wear prematurely on UK roads, causing a knocking noise from the rear over bumps and vague handling at speed. This is a common MOT advisory item. Symptoms include: Knocking from the rear over bumps, Vague rear-end feel at motorway speed, Uneven rear tyre wear. Estimated repair cost: £150–£400.

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