The 2017 Genesis G80 3.8L V6 is a solid luxury sedan, but early examples suffered from catastrophic engine failures due to metal debris contamination during manufacturing. The 8-speed automatic transmission also shows weakness in its cooling and mounting systems.
Theta II Engine Failure - Metal Debris Contamination
Occasional · high severityTypical onset: 40,000-90,000 mi
Symptoms: Knocking or ticking noise from engine block, Metal shavings in oil during changes, Sudden loss of oil pressure, Catastrophic bearing failure leading to seized engine
Fix: Complete engine replacement or full rebuild including crankshaft, pistons, bearings, and rings. Manufacturing defect left metal debris in crankshaft oil passages that destroys bearings. 25-35 labor hours for short block replacement, 40+ hours for complete teardown and rebuild.
Estimated cost: $8,000-15,000
Transmission Oil Cooler Failure
Common · medium severityTypical onset: 60,000-100,000 mi
Symptoms: Transmission fluid leaking from radiator area, Pink or red coolant in overflow tank (cross-contamination), Harsh shifting or slipping after cooler fails, Overheating transmission under load
Fix: Replace external transmission oil cooler and flush both cooling system and transmission. If coolant entered transmission, full trans service required. 3-5 labor hours for cooler replacement, add 2-3 hours if transmission flush needed.
Estimated cost: $800-1,800
Transmission Mount Deterioration
Common · low severityTypical onset: 70,000-120,000 mi
Symptoms: Clunking when shifting from Park to Drive/Reverse, Vibration at idle in gear, Excessive drivetrain movement during acceleration, Visible cracks or separation in rubber mount
Fix: Replace transmission mount assembly. OEM mounts use soft rubber that deteriorates faster than expected in this application. 2-3 labor hours with proper support equipment.
Estimated cost: $400-700
ABS Control Module Failure
Occasional · high severitySymptoms: ABS warning light illuminated, ESC/traction control lights on, Loss of anti-lock braking function, Module codes C1611, C1612 stored
Fix: Replace ABS/ESC hydraulic control unit. Subject of recall 19V-395 but not all affected vehicles were caught. Module suffers internal electrical shorts. 2-3 labor hours plus brake system bleed and calibration.
Estimated cost: $1,200-2,000
Fuel Filter Clogging (GDI System)
Occasional · medium severityTypical onset: 80,000-130,000 mi
Symptoms: Hard starting after sitting overnight, Loss of power under acceleration, Engine stumbling or hesitation, Low fuel pressure codes P0087, P0089
Fix: Replace in-tank fuel pump module and filter assembly. GDI systems are sensitive to fuel quality and filter can clog prematurely. Tank must be dropped. 4-5 labor hours.
Estimated cost: $900-1,500
Starter Solenoid Sticking
Occasional · medium severityTypical onset: 60,000-110,000 mi
Symptoms: Click but no crank when starting, Intermittent no-start condition, Grinding noise from starter area, Multiple start attempts needed
Fix: Replace starter assembly. Solenoid contacts wear and stick, covered under recall 20V-074 but only certain build dates qualified. 1.5-2 labor hours on V6 model with decent access.
Estimated cost: $500-800
Buy only with documented engine replacement/rebuild or proof the engine block passed Hyundai's knock sensor software update; otherwise this is a ticking time bomb that'll strand you with a $12K repair bill.
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.