Kia Sorento (UM) Common Problems & Reliability
The third-generation Kia Sorento (UM, 2015–2020) is a spacious, seven-seat large SUV that offers exceptional value, high towing capacity, and refined long-distance cruising comfort. Powered predominantly by the durable 2.2-litre CRDi diesel engine mated to a robust torque-converter automatic and Dynamax AWD system, it remains a favourite for families, caravanners, and towing enthusiasts across the UK.
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Detailed fault breakdown, symptoms, and estimated repair bills by production year.
Most Common Kia Sorento (UM) Faults & Repair Costs
2.2 CRDi EGR Valve Carbon Clogging & DPF Issues
Urban short trips cause soot buildup in the EGR valve and cooler, leading to sticking valves, reduced power, and frequent DPF warning lights.
Check Engine Light with EGR fault codes, Sluggish acceleration below 2,000 rpm, Excessive black smoke under load
- Check DPF soot loading levels with diagnostic scan
- Inspect EGR valve history
- Take on extended test drive up to motorway speeds
AWD Dynamax Electro-Hydraulic Coupling Wear
The Magna Dynamax AWD coupling can suffer internal clutch pack wear or pump failure if tyres are unevenly worn or fluid changes are ignored.
Binding or shuddering during tight full-lock turns, Whining sound from the rear differential, AWD warning light on dash
- Perform slow full-lock turns on tarmac
- Inspect all four tyre tread depths for uneven wear
- Check service history for differential oil changes
Rear Suspension Self-Levelling Damper Leaks
Higher-spec models fitted with rear self-levelling shock absorbers (Nivomat) can develop hydraulic leaks, causing the rear end to sag and bounce over road undulations.
Rear of car sitting low after standing, Excessive bounce over speed humps, Oily fluid weeping down rear dampers
- Visually inspect rear dampers for fluid misting
- Check ride height on level ground
- Review MOT records for rear shock advisories
Buying a used Kia Sorento (UM)? Always check for hidden finance and write-off history.
Mechanical problems are only half the battle. Over 1 in 3 UK used cars checked have unpaid finance or accident write-off records that could cause you to lose the car or thousands in value.