Most 2022 Sorentos with diesel use Kia’s 2.2 CRDi engine paired to an 8‑speed automatic; many examples are AWD and fitted with a third row. The diesel has good long‑distance economy but uses a DPF and AdBlue system, so it prefers regular longer runs rather than only short urban trips. Kia’s long factory warranty is often still relevant on a 4‑year old example — check whether it’s remaining/transferable and that any recalls were completed.

• DPF / EGR and AdBlue: look for warning lights, excessive smoke or a strong diesel smell on cold start; ask whether the car has been regularly used on long runs to allow DPF regeneration.
• Automatic gearbox behaviour: test for smooth, timely up/down shifts and check whether the dealer can show any gearbox fluid/service history or software updates.
• Third row operation and wear: fold/unfold the 3rd row, check latches, seat straps and boot space with 7 seats in place.
• Tow gear and rear suspension: inspect the towbar electrics, wiring and check for rear‑end sag or premature spring/shock wear (common where vehicles have been used for regular towing).
• Underside and wheel‑arch condition: check for stone‑chip corrosion or scrapes around the rear arches and tailgate area, and uneven tyre wear which can signal tracking or suspension issues.