The Grand C4 Picasso (also sold as Grand C4 SpaceTourer on some paperwork) is the seven‑seat MPV version with flexible rear seating and a larger boot than the regular C4. Diesel manuals from PSA typically use BlueHDi technology, so expect DPF and EGR hardware and an AdBlue system on Euro6 engines — these are reliable on long runs but can give trouble if the car has done mostly short trips. Manual gearboxes mean watch the clutch for wear on higher-mileage examples; MPVs of this age tend to depreciate faster than SUVs.

• DPF condition — ask for evidence of regular long runs or forced/regeneration history (smoke, persistent DPF warnings).
• AdBlue system and dosing faults — check for warning lights and that the filler cap/level sensor work.
• Clutch and gearbox feel — test for smooth engagement, no slipping and positive gear selection (manuals on family cars often see heavy use).
• Third‑row seat mechanisms, latches and carpeting — ensure seats fold/lock properly and check for water ingress or worn upholstery.
• EGR/soot build‑up signs and oil condition — excessive soot, black smoke on acceleration or shortened oil-change intervals can indicate EGR/soot issues.