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Genesis · Luxury · 2023–2025

Genesis G90 RG3.5

Weaknesses, engine ratings and buying advice

★★★★★
3.0 / 5.0 · Based on 1 engine variants

Engine Overview

The Genesis G90 RG3.5 is available with one engine variant at 379 hp.

3.5T · Petrol· 375 PS
2023 2025
Be Careful 5 weaknesses
Show all weaknesses →

The Genesis 3.5T (Petrol, 375 PS) has the G6DS (3.5L Twin-Turbo (SmartStream)) — rated: "Be Careful", 5 known weaknesses.

Vehicle Weaknesses

WeaknessCost
✖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
Ad HDA corner radar Genesis G90ADAS software update G90
 Low
●Sunroof / Headliner Rattle

Panoramic sunroof produces rattling and creaking over uneven surfaces. Shade roll-up assembly not properly torqued during factory assembly. Dealer fix involves dropping the headliner and re-torquing fasteners. Unacceptable in a $90k+ sedan.

Symptoms: Rattle from ceiling area over bumps, creaking from sunroof frame, slapping sound from headliner fabric
Ad sunroof shade assembly Genesis G90headliner clip Genesis G90
 Low

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Known Problems and Issues

A total of 8 weaknesses have been documented for the Genesis G90 RG3.5 (2023–2025) — 5 engine-related and 3 vehicle-related. Typical issues affect Other, Electronics.

G90 (G6DS, 2023–2025) — Be Careful: Turbocharger Failure, ITMS Overheating (Thermal Management), Fuel Pump Failure (Stalling Recall). 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? +
The Genesis G90 RG3.5 has 5 known engine weaknesses and 3 vehicle weaknesses.
What should I look for when buying a used Genesis G90 RG3.5? +
faq.watch_a_none
Which engine is recommended? +
Be careful: G6DS (3.5L Twin-Turbo (SmartStream)). No engine is rated 'Good Choice'. The most fun to drive is the G6DS (3.5L Twin-Turbo (SmartStream)).
Which Genesis G90 RG3.5 engine is the most fun? +
The {code} ({displacement}) offers the most driving fun in the Genesis G90 RG3.5 — rated: "Decent". {description} The G90 throws everything at the wall: rear-seat entertainment, massaging seats, e-supercharger on higher trims. The 3.5T delivers smooth, effortless power. Highway Driving Assist recall (false braking) is unsettling. Battery drain issues and mirror motor noises are early-adopter territory. The concierge service model means no traditional dealer — great concept, inconsistent execution. Depreciation will be brutal, making the used market the play.
Is the Genesis G90 RG3.5 worth buying used? +
The Genesis G90 RG3.5 requires careful consideration — choosing the right engine variant is crucial.
What horsepower variants are available for the Genesis G90 RG3.5? +
The Genesis G90 RG3.5 is available with engine variants from 379 to 379 hp. Petrol: G6DS (3.5L Twin-Turbo (SmartStream)).

Last updated: February 2026 · All information without guarantee