Genesis G80 RG3
Weaknesses, engine ratings and buying advice
The G80 is the mid-size luxury sedan with which Genesis genuinely started to worry the established executive cars. Where a 5 Series or an E-Class show up with prestige and a price to match, the G80 counters with an exceptionally quiet, beautifully finished cabin, lots of room, and equipment you'd pay dearly for elsewhere. For the young luxury brand it's the flagship of the range — comfort-focused, composed, and a strong used-car case as long as you know the technical pitfalls.
There are three powertrains. The 2.5T SmartStream four (G4KR, around 300 hp) is the sensible entry, with dual injection to fight carbon, but it still carries issues like oil consumption, a leaking turbo oil-feed line, and — critically — the two fuel recalls (high-pressure line with fire risk, stalling low-pressure pump). The 3.5 twin-turbo V6 (G6DS, 375 hp) is the smoother, stronger unit and suits the car's character best; it too carries the fuel recalls plus GDI-typical oil consumption and carbon buildup. The trickiest is the electric model (Electrified G80, PE) on the E-GMP platform: fast, silent, and technically impressive with 800-volt charging — but affected by the serious ICCU failure that can cause a total loss of drive and was subject to a recall. On top of that there are cases outside warranty and recall, 12V deep-discharge, and a recall for a rear axle-shaft fracture.
On the vehicle side, the usual Genesis points apply: soft clear coat prone to peeling, 12V battery drain, and A/C condenser or evaporator failures. There's also a safety-related seatbelt-pretensioner recall (explosion risk) that you absolutely want confirmed as done.
When buying, the VIN recall check is everything — doubly so on the EV, because of the ICCU and the axle shaft. Anyone considering the electric G80 should make sure the ICCU matter is resolved, otherwise expensive out-of-warranty repairs loom. Bottom line, the G80 is a whole lot of luxury sedan for comparatively little money — the V6 is the most harmonious buy, the EV the most fascinating but also the riskiest. With a clean history and cleared recalls, you get a remarkable amount of car.
375 PS
3.5T · Benzin
375 hp — the G80 that actually feels like a flagship
Fun to Drive!Engine Overview
The Genesis G80 RG3 is available with 3 engine variants — from 300 to 375 hp.
2.5L SmartStream turbo four — the Theta III replacement that fixes the big mistake. Dual injection (port + direct) means intake valves stay clean: no walnut blasting at 60k. 300 hp, smooth power curve, virtually no turbo lag thanks to twin-scroll design. The fuel pump recall (2021-2023) is the serious one — complete stalling while driving, over 50,000 vehicles affected. ITMS (Integrated Thermal Management) throws false overheating warnings on some units — software update helps, hardware failures require component replacement. Still a young engine, but fundamentally more refined than the G4KL. Oil change discipline remains critical — the aluminum block tolerates zero oil neglect.
- !! Elevated oil consumption from piston-ring blowby from 40,000 km
Early 2.5T units burn oil, in cases up to one quart per 1,000 miles. Cause is oversized piston-ring end gaps and cylinder-wall wear letting oil slip past the rings into the combustion chamber.
Symptoms: Dropping oil level between changes, bluish smoke on cold start, oil warning light, occasional cold-engine piston slap. - !! Fuel leak at high-pressure pipe/rail (recall)
At the pipe-to-rail joint fuel can leak due to insufficiently secured/torqued fasteners — a fire risk. Recall covers 2.5T models (Genesis campaign 033G, Kia SC368; an earlier 2021 G80/GV80 action too).
Symptoms: Fuel smell, visible fuel traces at rail/pipe, gasoline odour in the engine bay; in many cases without driver notice. - !! Low-pressure fuel pump impeller deforms, stalling (recall)
The low-pressure fuel pump impeller can deform under heat and jam the pump. The result is interrupted fuel supply and sudden stalling while driving. Recall NHTSA 24V282 (Genesis 022G).
Symptoms: Engine hesitation, stumbling, rough idle, check engine light, sudden power loss or stall while driving.
+ 3 more engine weaknesses + vehicle weaknesses
3.5L SmartStream twin-turbo V6 — 375 hp, dual injection, twin-scroll turbos. The mechanical evolution of the G6DP with better fuel delivery and thermal management. More responsive than the 3.3T it replaces, smoother at idle, and the dual injection eliminates carbon buildup. Timing chain rattle from 20-30k miles on early production units — tensioner suspect. Turbo seal failures documented on 2024 models as low as 16k miles, with oil leaking from the right turbo. Same fuel pump recall as the 2.5T (2021-2023). CVVT phasers share architecture with older Hyundai V6 engines where longevity past 100k is questionable. Expected lifespan: 150-180k miles before major work.
- !! Recall: loose high-pressure crossover fuel pipe (fire risk)
NHTSA recall 26V-229 (Genesis 033G): the retention nuts on the high-pressure crossover fuel pipe were not torqued to spec at the factory and can loosen. Leaking fuel in the engine bay raises fire risk. 3.5 V6 only.
Symptoms: Fuel smell, gasoline leaking/pooling in the engine bay, check-engine light. Often unnoticed until the recall notice. - !! Recall: fuel pump impeller failure – engine stall
NHTSA recall 24V-282 (Genesis 022G, prior 23V-670): the fuel pump impeller can crack while driving and starve the engine of fuel. Affects 2021–2023 GV70/GV80/G80/G90. 463 reported incidents, no fires.
Symptoms: Check-engine light, hesitation or rough running, power loss, sudden engine stall, hard starting. - !! Elevated oil consumption (GDI direct injection) from 30,000 km
The 3.5T-GDI shows noticeable oil use on some cars. A 2023 GV80 owner reported a low-oil light after just 4,000 miles requiring nearly 5.5 quarts topped up; others report about 0.6 qt per 1,000 miles. Check oil level regularly.
Symptoms: Low-oil warning, dropping dipstick level between changes, occasional misfire when the level runs low.
+ 3 more engine weaknesses + vehicle weaknesses
Dual-motor EV on Hyundai's E-GMP platform — 800V architecture, 18-minute 10-80% DC fast charging. Instant torque, zero mechanical drama. The ICCU recall (2022-2024) is the defining issue: the charging control unit overheats, stops feeding the 12V battery, and the car loses drive power. Nearly 150,000 Hyundai/Kia/Genesis EVs recalled. Even after the fix — fuse replacement, software update — 12V drain persists. Genesis recommends running the car 30 minutes every few days to keep the 12V alive. That is an unacceptable workaround for a $60k+ EV. Range is 236-282 miles EPA; degradation data still limited.
- !! ICCU failure — recall (loss of drive power)
The Integrated Charging Control Unit stops charging the 12V battery; heat damage to transistors blows the fuse. The car enters fail-safe and loses drive power after 22–45 min. NHTSA recalls 24V204000/24V868000.
Symptoms: 'Check Electric Vehicle System' or '12V battery low' warning, sometimes a loud pop from the rear, then gradually reduced power until stranded. Requires towing. - !! ICCU failure outside warranty/recall from 40,000 km
Even after the recall software update the ICCU still fails; lawsuits allege replacement ICCUs share the same defect. Outside warranty/recall a new unit costs over $5,000.
Symptoms: Repeated electrical faults, loss of drive even after recall repair, loud discharge from the rear, car won't start with a dead 12V battery. - !! Rear driveshaft fracture — recall
The rear inner driveshaft was improperly heat-treated and can break under load — causing loss of rear-axle drive. NHTSA recalls 23V300000 and 24V065000 for 2023 AWD models.
Symptoms: Sudden loss of drive, clunk/crack from the rear under load, vibration when accelerating.
+ 3 more engine weaknesses + vehicle weaknesses
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| Soft Paint / Clear Coat Peeling Same paint quality concerns as the G70 — soft clear coat, easy chipping, premature peeling. Door handle clear coat delamination documented on multiple G80 units. Part of the Genesis-wide class action (Russo v. Hyundai, 2024). Symptoms: Clear coat peeling on door handles and bumpers, rock chips, swirl marks from washing | Medium |
Alternatives
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Known Problems and Issues +
A total of 22 weaknesses have been documented for the Genesis G80 RG3 (2021–2025) — 18 engine-related and 4 vehicle-related. Typical issues affect Body, Other, Electronics, HVAC.
G80 (G4KR, 2021–2025) — Be Careful: Elevated oil consumption from piston-ring blowby, Fuel leak at high-pressure pipe/rail (recall), Low-pressure fuel pump impeller deforms, stalling (recall). Power: 300 PS.
G80 (G6DS, 2021–2025) — Be Careful: Recall: loose high-pressure crossover fuel pipe (fire risk), Recall: fuel pump impeller failure – engine stall, Elevated oil consumption (GDI direct injection). Power: 375 PS.
G80 (PE, 2023–2025) — Be Careful: ICCU failure — recall (loss of drive power), ICCU failure outside warranty/recall, Rear driveshaft fracture — recall. Power: 365 PS.
What to watch out for with the Genesis G80? See the detailed listing of all engine and vehicle weaknesses in the sections above.
Frequently Asked Questions
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Last updated: February 2026 · All information without guarantee