The 2017 Kia Forte is generally reliable transportation, but the 2.0L engine (particularly in the Forte5 SX) suffers from catastrophic engine bearing failures due to metal debris contamination during manufacturing. The 1.8L is less problematic but not immune.
Theta II 2.0L Engine Bearing Failure (Connecting Rod and Main Bearings)
Occasional · high severityTypical onset: 60,000-100,000 mi
Symptoms: Metallic knocking or ticking from engine bay, especially at cold start, Low oil pressure warning light, Engine seizing without warning, Metal shavings in oil during changes, Rough idle or loss of power
Fix: This is part of the widespread Theta II engine failure issue. Metal debris from manufacturing wasn't properly cleared, leading to bearing wear and catastrophic failure. Requires complete engine replacement or rebuild with new short block, pistons, rings, bearings, and head gaskets. 12-16 labor hours for replacement, often covered under extended warranty/recall if owner can prove maintenance.
Estimated cost: $5,500-8,500
Transmission Oil Cooler Leaks
Common · medium severityTypical onset: 70,000-110,000 mi
Symptoms: Transmission fluid dripping from front of vehicle, Low transmission fluid warning or slipping, Pink or red fluid pooling under car, Transmission overheating
Fix: The external transmission oil cooler lines corrode or the cooler itself develops leaks where it mounts to the radiator. Requires replacement of cooler and lines, fluid flush. 2-3 labor hours.
Estimated cost: $450-750
Broken Transmission Mounts
Common · low severityTypical onset: 80,000-120,000 mi
Symptoms: Clunking when shifting from Park to Drive/Reverse, Excessive vibration at idle, Engine movement visible when accelerating hard, Thud when letting off throttle
Fix: The hydraulic transmission mount fails, causing drivetrain movement and harshness. Straightforward replacement, but requires supporting the engine/transmission. 1.5-2 labor hours.
Estimated cost: $250-450
Premature Front Wheel Bearing Wear
Occasional · medium severityTypical onset: 60,000-90,000 mi
Symptoms: Humming or growling noise that increases with speed, Noise changes when turning (louder on one side), Vibration through steering wheel, Potential ABS light if bearing damage affects sensor
Fix: Front wheel bearing assemblies wear faster than expected, particularly on higher-trim models with larger wheels. Requires hub assembly replacement. 1.5-2 hours per side.
Estimated cost: $300-500 per side
Trunk Latch Failure (Recall 19V-362)
Occasional · medium severitySymptoms: Trunk won't open from inside or outside, Trunk latch doesn't engage fully, Warning light indicates trunk is open when closed, Latch mechanism sticks or feels loose
Fix: Manufacturing defect in striker causes latch to fail, potentially trapping occupants if they climb into trunk. Covered under recall - dealer replaces latch assembly free. 0.5 labor hours but schedule with dealer.
Estimated cost: $0 (recall repair)
Fuel Pump Failure
Occasional · high severityTypical onset: 90,000-130,000 mi
Symptoms: Engine cranks but won't start, Loss of power under acceleration, Sputtering at highway speeds, Whining noise from rear of vehicle, Stalling in hot weather
Fix: Fuel pump assembly fails, leaving you stranded. Requires dropping fuel tank, replacing pump module. 2-3 labor hours.
Estimated cost: $600-950
Buy the 1.8L without hesitation, avoid the 2.0L unless it's already had engine replacement or you have extended warranty—otherwise solid budget transportation.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.