The first‑generation 508 was offered with petrol engines (commonly 1.6 naturally aspirated or 1.6 turbo 'THP') and manuals are common — petrol variants avoid diesel-specific items like DPFs or AdBlue but have less low‑down torque for heavy motorway overtakes. Manuals mean watch the clutch and gearbox wear; turbo petrols are peppier but benefit from timely servicing. Parts and independent support are widely available in Ireland, but resale for Peugeots of this age is generally only average.

• Clutch condition and biting point — check for slipping under load and heavy clutch wear (important on an 11‑year‑old manual).
• Manual gearbox synchro feel (especially mid gears) and smooth gear selection; listen for crunching or false neutrals.
• Rust and corrosion around wheel arches, sills and the underside/boot floor — age and Irish conditions can show through.
• Suspension bushes, drop links and rear axle noise; check for rattles and uneven tyre wear.
• Function of electrics/infotainment and convenience items (central locking, electric windows, parking brake if fitted) — older 508s can have intermittent electrical niggles.