Genesis G90 RG3.5
Weaknesses, engine ratings and buying advice
The G90 is Genesis's full-size flagship — the big statement sedan with which the brand attacks the very top, where the S-Class, 7 Series, and A8 normally hold court. And the G90 pulls it off surprisingly convincingly: a cabin that goes toe-to-toe with the establishment, exceptional quiet, chauffeur-grade rear seating, and a depth of equipment rarely seen at this price. For a young luxury brand, that's a statement — a lot of car without the prestige markup of the German rivals.
Under the hood there's only the 3.5 twin-turbo V6 (G6DS) with 375 hp — the one right engine for a car in this class. It's the refined evolution of the older twin-turbo V6, with dual injection and twin-scroll turbos, strong from low revs and pleasantly hushed. It's not worry-free, though: there are the two serious fuel recalls — a loose high-pressure fuel line with fire risk, and a fuel-pump impeller that can cause the engine to stall. Add GDI-typical oil consumption, the occasional oil-level sensor false alarm (P250F), oil leaks at the turbochargers, and valve carbon buildup. None of it is unusual for a modern turbo direct-injection engine, but the fuel recalls are safety-related.
On the vehicle side, the G90 is comparatively trouble-free but not flawless: the Highway Driving Assist is prone to phantom braking (recall), there's the recurring Genesis 12V battery drain, and rattles from the sunroof or headliner. For a sedan meant to be a quiet retreat, the rattles are annoying, but usually fixable.
When buying, the VIN recall check is mandatory — the fuel line, the pump impeller, and the HDA assist must all be cleared. A documented oil-service history is a given on the V6, as is a test drive with an ear for roof rattles and an eye on the driver-assist systems. Bottom line, the G90 may be the boldest Genesis of all: a genuine full-size luxury sedan that gets surprisingly close to the segment kingpins while staying noticeably cheaper. With completed recalls and clean maintenance, you get an unusual amount of luxury for the money.
Engine Overview
The Genesis G90 RG3.5 is available with one engine variant at 375 hp.
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
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| Highway Driving Assist False Braking (Recall) The HDA corner radar may falsely detect a vehicle, causing sudden unintended braking while driving. Affects 2023-2026 G90. Software update available from dealer. Unsettling at highway speeds. Symptoms: Sudden hard braking with no obstacle, HDA warning, phantom vehicle detection | Low |
Alternatives
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Known Problems and Issues +
A total of 9 weaknesses have been documented for the Genesis G90 RG3.5 (2023–2025) — 6 engine-related and 3 vehicle-related. Typical issues affect Other, Electronics, Body.
G90 (G6DS, 2023–2025) — 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.
What to watch out for with the Genesis G90? See the detailed listing of all engine and vehicle weaknesses in the sections above.
Frequently Asked Questions
What problems and weaknesses does the Genesis G90 RG3.5 have? +
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Last updated: February 2026 · All information without guarantee