The 2019 Santa Fe diesel is typically fitted with a 2.0-litre CRDi engine and a 6-speed manual; on the open road it returns good economy but the drivetrain does include a DPF and (on many examples) an AdBlue/NOx aftertreatment system. Higher-spec cars often have a cramped third row that’s best for occasional use or children, and manufacturer warranty from new will have expired by now — check the full service history.

• DPF and EGR condition — look for frequent regenerations, warning lights or excessive soot build-up (common if mostly used for short urban trips).
• AdBlue system (if fitted) — check filler cap, tank condition and for any dosing faults or dashboard AdBlue warnings.
• Clutch and gearbox feel — test for slipping, heavy engagement or noisy syncros which are typical wear items on a 7‑year‑old manual.
• Third-row seats and folding mechanisms — check hinges, latches and carpets for water ingress or wear (third row reduces boot space when in use).
• Underbody, rear subframe and towbar mounts — inspect for corrosion or impact damage, especially if the car has been used towing or on salted roads.