2024 GENESIS G70

Typical onset: 30,000-80,000 mi

Symptoms: Metallic knocking from engine bay at idle, Low oil pressure warning, Metal shavings in oil during changes, Sudden catastrophic failure with seized engine

Fix: This is the notorious Theta-II bearing defect carried over from Hyundai/Kia applications. Requires complete short block replacement or engine rebuild with updated bearings and crankshaft. 18-25 labor hours depending on approach. Many covered under Hyundai Motor Group's extended warranty, but out-of-pocket is brutal.

Estimated cost: $8,000-14,000

Typical onset: 40,000-90,000 mi

Symptoms: Transmission fluid puddles under car, Burnt transmission fluid smell, Harsh or delayed shifting when fluid is low, Check engine light with transmission temp codes

Fix: Oil cooler lines corrode at connection points or cooler itself develops pinhole leaks. Requires dropping exhaust, sometimes subframe, to access. 4-6 hours labor plus fluid refill and programming.

Estimated cost: $1,200-2,000

Typical onset: 50,000-100,000 mi

Symptoms: Clunking when shifting from park to drive, Excessive vibration at idle in gear, Jerky acceleration from stop, Visible torn rubber on mount during inspection

Fix: Hydraulic transmission mount separates or leaks fluid. Common on models with spirited driving. 2-3 hours labor, straightforward replacement but requires supporting transmission.

Estimated cost: $400-700

Typical onset: 60,000-110,000 mi

Symptoms: Long cranking before engine starts, Rough idle and misfires, Loss of power under acceleration, P0087 fuel pressure too low code, Car stalls or fails to start

Fix: Direct-injection HPFP on 2.0T wears prematurely, contaminating fuel system with metal debris. Requires pump replacement plus injector cleaning or replacement if contaminated. 3-5 hours labor.

Estimated cost: $1,500-3,000

Typical onset: 20,000-60,000 mi

Symptoms: Rattling noise at cold start or idle, Sound disappears under boost, No performance loss, More pronounced in cold weather

Fix: Wastegate actuator arm develops play, causing rattle but not affecting function immediately. Can be lived with, but eventually leads to boost control issues. Turbo replacement required. 6-8 hours labor for turbo R&R.

Estimated cost: $2,000-3,500

Typical onset: 60,000-100,000 mi

Symptoms: Rough idle when warm, Hesitation on acceleration, Reduced fuel economy, Misfires under load, Failed emissions testing

Fix: Direct-injection engines bypass intake valves with fuel, allowing carbon deposits. Requires walnut blasting intake ports with manifold removed. 4-6 hours labor. Preventive catch-can installation recommended.

Estimated cost: $600-1,100