2018 Kia Soul
Browse our directory of 2018 Kia Soul vehicles. Access instant MOT history reports, tax status, and reliability insights for any registration listed below.
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Common Problems & Reliability
The 2018 Kia Soul has 2 known issues. 2 are moderate concerns worth inspecting before purchase.
Electric Power Steering (MDPS) Flexible Coupler Wear
ModerateThe motor-driven power steering (MDPS) column contains a small star-shaped polyurethane flexible coupler that cushions the motor drive gear. Over time, heat and mechanical fatigue cause the plastic teeth to degrade, disintegrate, and create noticeable free play. Drivers experience an annoying clicking or knocking through the steering wheel when changing direction or crossing uneven surfaces. While replacement parts are inexpensive, replacing the coupler requires dropping the steering column and partially dismantling the motor housing.
Symptoms: Noticeable knocking or clicking sound when rocking the steering wheel left and right while parked, Vague on-centre steering response and small dead spot at motorway speeds...
Est. repair cost: £180–£350
1.6 CRDi Diesel Particulate Filter (DPF) and EGR Valve Soot Clogging
ModerateThe 1.6-litre CRDi diesel engine is engineered for motorway cruising and thermal efficiency, but many Souls were purchased as short-distance urban runarounds. In repeated stop-start driving, exhaust temperatures never reach the threshold required for passive DPF regeneration. Unburnt soot accumulates within the particulate filter and recirculating exhaust gas deposits carbon sludge across the EGR valve pintle. Sticking EGR valves cause hesitation under acceleration, black smoke, and eventual DPF blockage that triggers limp-home mode.
Symptoms: Illuminated DPF warning symbol or check engine light on the instrument cluster, Noticeable flat spot and sluggish acceleration below 2,000 rpm...
Est. repair cost: £300–£1,100
Buying Tips for the 2018 Kia Soul
- Inspect the steering column for a knocking or clicking sensation when rocking the wheel, signalling flexible coupler wear in the motor-driven power steering unit
- On 1.6 CRDi diesel models, inspect the exhaust tailpipe and diagnostics for soot accumulation or DPF regeneration fault codes caused by repeated short journeys
- Check rear suspension trailing arm bushes and coil springs for corrosion or fracturing, particularly on cars driven regularly over UK speed humps
- On Soul EV electric models, check the rapid charging port latch mechanism and verify high-voltage battery state of health via onboard dashboard menus
- Examine exterior alloy wheels for severe white-worm lacquer peel and check boot floor trim for water ingress around the rear lamp cluster seals
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