161 of 203 relevant owner complaints are about the engine, transmission or fuel system
79% of relevant owner complaints filed with NHTSA on the 2018 Kia Soul are about the engine, transmission or fuel system. Well over half of everything owners reported is the drivetrain. That is a severe model-level pattern; every model year we track at this level has a documented failure behind it.
Worse than 98% of the 1,230 model years we track (2010–2023).
Excludes 15 airbag, lighting and seat-belt recall complaints that would otherwise mask the signal (unadjusted: 74%).
The percentage is each model year's drivetrain complaint share. No elevated signal describes the model year, not any one car; a well-kept example of a flagged model can still be the right buy, and any of these still needs an inspection.
What owners reported
ENGINE09/09/2026
This Kia has an oil consumption issue I need to add oil every 3 to 4 hundred miles also my oil gets black at least 1 week after an oil change.
ENGINE09/09/2026
This Kia has an oil consumption issue I need to add oil every 3 to 4 hundred miles also my oil gets black at least 1 week after an oil change.
ENGINE09/09/2026
This Kia has an oil consumption issue I need to add oil every 3 to 4 hundred miles also my oil gets black at least 1 week after an oil change.
Three of 161 drivetrain complaints. The full report shows more, with quotes about the engine in the car you are looking at first.
Recall campaigns on this model year (1)
AIR BAGS
Kia Motors America (Kia) is recalling certain 2017-2019 Sedona, Soul, Soul EV, 2017-2018 Forte, and 2017 Forte Koup vehicles. The Air Bag Control Unit (ACU) cover may co…
This does not say whether a particular car has an open, unrepaired recall. That depends on the VIN.
Before you buy a 2018 Kia Soul
Ask the seller whether the engine has ever been repaired or replaced, and whether the car has shown stalling, loss of power, rough idle, oil consumption or a check-engine light.
Drive it from a cold start and long enough to warm up. Many engine faults hide once the car is warm.
Get an independent pre-purchase inspection from a mechanic you choose, and tell them to focus on the engine.
1 recall campaign on this model year. Whether a specific car still has one open depends on the VIN; the report checks that.
Ask for service records. A engine already replaced under warranty is a different car from one that was not.
Have the VIN?Paste it and get the full report for that car. First report free, then a 30-day pass covers a whole car search.
Experimental model-level information. This is not a vehicle inspection, vehicle-history
report, financial advice or purchase recommendation. It describes patterns across a model year, not the condition
of any individual vehicle.