The Citroën Relay (same basic architecture as the Peugeot Boxer / Fiat Ducato) is commonly fitted with 2.2–2.3 litre Euro6 diesel engines and a manual gearbox — a simple, durable setup but with the usual modern-diesel caveats (DPF/EGR/AdBlue systems). Relay vans come in multiple lengths and roof heights (L1–L4, H1–H3); check which size you’re getting because payload and internal cubic metres vary a lot. If the dealer lists it as a camper conversion, expect extra wiring, fittings and possible habitation work — inspect those separately, and remember commercial insurance and DOE history for a van differ from private passenger policies in Ireland.

• DPF and EGR condition — inspect service records and ask about frequent short-trip use which accelerates DPF clogging
• Clutch operation and pedal feel — manuals on 3‑year work vans can show early wear if used under load
• Signs of overload: sagging rear suspension, shorn spring shackles or uneven tyre wear
• Cargo area and bulkhead condition: floor rot/patches, racking fixings, corrosion around rear arches and loadbed
• If converted to a camper: check conversion wiring, water/gas installations and evidence of damp around windows and lockers