The Genesis G90 II LWB 3.5 T-GDi e-S/C V6, producing 415 horsepower, represents the pinnacle of Genesis’s full-size luxury sedan offering. Introduced in 2022, this long-wheelbase (LWB) variant builds upon the foundation of the second-generation G90 (internally known as the EQ900 in some markets), aiming to compete directly with established German and Japanese luxury flagships. Positioned as the top-tier trim, it emphasizes rear passenger comfort and a sophisticated driving experience. The “e-S/C” designation indicates the engine utilizes both turbocharging and a supercharger, coupled with a 48V mild-hybrid system for improved efficiency and responsiveness. This model is primarily targeted at the North American and Asian markets, where large luxury sedans remain popular.
Technical Specifications
| Brand | Genesis |
| Model | G90/EQ900 |
| Generation | G90 II LWB |
| Type | 3.5 T-GDi e-S/C V6 (415 Hp) Mild Hybrid AWD Automatic 5 Seat |
| Start of production | 2022 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 14.1 l/100 km (16.7 US mpg, 20 UK mpg, 7.1 km/l) |
| Fuel consumption (extra urban) | 10 l/100 km (23.5 US mpg, 28.2 UK mpg, 10 km/l) |
| Fuel consumption (combined) | 12.2 l/100 km (19.3 US mpg, 23.2 UK mpg, 8.2 km/l) |
| CO2 emissions | 209 g/km |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 5.5 kg/Hp, 180.8 Hp/tonne |
| Weight-to-torque ratio | 4.2 kg/Nm, 239.2 Nm/tonne |
| Battery voltage | 48 V |
| Power | 415 Hp @ 5800 rpm |
| Power per litre | 119.6 Hp/l |
| Torque | 549 Nm @ 1300-4500 rpm (404.92 lb.-ft. @ 1300-4500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | Smartstream / G6DV |
| Engine displacement | 3470 cm3 (211.75 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Turbocharging and Supercharger, Intercooler |
| Engine oil capacity | 7 l (7.4 US qt | 6.16 UK qt) |
| Coolant capacity | 10.96 l (11.58 US qt | 9.64 UK qt) |
| Kerb Weight | 2295 kg (5059.61 lbs.) |
| Fuel tank capacity | 73 l (19.28 US gal | 16.06 UK gal) |
| Length | 5465 mm (215.16 in.) |
| Width | 1930 mm (75.98 in.) |
| Height | 1490 mm (58.66 in.) |
| Wheelbase | 3370 mm (132.68 in.) |
| Front track | 1655 mm (65.16 in.) |
| Rear track | 1660 mm (65.35 in.) |
| Front overhang | 850 mm (33.46 in.) |
| Rear overhang | 1245 mm (49.02 in.) |
| Drivetrain Architecture | ICE and electric motor drive rear wheels, with on-demand front wheel drive |
| Drive wheel | All wheel drive (4×4) |
| Number of gears | 8 |
| Gearbox type | Automatic transmission |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Steering type | Steering rack and pinion |
| Power steering | Electric |
| Wheel rims size | 20 |
Powertrain & Engine Architecture
The heart of the G90 II LWB is the Smartstream 3.5 T-GDi engine, designated G6DV. This engine is a 3.5-liter, naturally aspirated V6, augmented by both a twin-scroll turbocharger and an electric supercharger. This dual-charging system aims to eliminate turbo lag and provide instant power delivery across the rev range. Direct injection further enhances efficiency and performance. The engine’s output of 415 horsepower at 5800 rpm and 404.92 lb-ft of torque between 1300-4500 rpm is substantial. The 48V mild-hybrid system incorporates a belt-driven starter generator (BSG) that assists the engine during acceleration and enables a smoother start-stop function. The engine is longitudinally mounted, driving all four wheels through an eight-speed automatic transmission. This transmission is designed for smooth and responsive shifts, with adaptive learning capabilities to suit the driver’s style.
Driving Characteristics
The combination of the powerful engine, all-wheel drive, and eight-speed automatic transmission results in a refined and capable driving experience. While not overtly sporty, the G90 II LWB delivers strong acceleration and effortless cruising. The mild-hybrid system provides a noticeable boost during initial acceleration, contributing to a feeling of responsiveness. The automatic transmission is well-tuned, offering seamless gear changes and intelligent shift logic. Compared to potential lower-trim G90 variants (if offered with a smaller engine), this 3.5 T-GDi model provides a significant performance advantage. The long wheelbase contributes to a comfortable ride, effectively absorbing road imperfections. The all-wheel-drive system provides enhanced traction and stability in various weather conditions.
Equipment & Trim Levels
The G90 II LWB 3.5 T-GDi e-S/C V6 is comprehensively equipped as standard. Interior features typically include premium Nappa leather upholstery, heated and ventilated front and rear seats with massage functions, a multi-zone climate control system, and a Lexicon premium sound system. A large infotainment screen with navigation, Apple CarPlay, and Android Auto compatibility is standard. Advanced driver-assistance systems (ADAS) are also abundant, including adaptive cruise control, lane-keeping assist, blind-spot monitoring, and a surround-view monitor. Optional extras may include a rear-seat entertainment system, a head-up display, and unique exterior color options.
Chassis & Braking
The G90 II LWB utilizes a multi-link suspension system at all four corners, optimized for ride comfort and handling balance. The suspension is electronically controlled, allowing for adjustments to damping rates based on road conditions and driving mode. Ventilated disc brakes are fitted on all wheels, providing ample stopping power. The electronic stability control (ESC) system integrates with the anti-lock braking system (ABS) and traction control system to enhance safety and stability. The steering system is an electric power-assisted rack-and-pinion setup, offering precise and responsive steering feel.
Market Reception & Comparison
The Genesis G90 II LWB has been generally well-received by automotive critics, praised for its luxurious interior, comfortable ride, and strong performance. Fuel economy, however, is a common point of criticism, with the combined fuel consumption of 19.3 US mpg being typical for a vehicle of this size and performance. Compared to its rivals, such as the BMW 7 Series, Mercedes-Benz S-Class, and Lexus LS, the G90 II LWB offers a compelling value proposition, often undercutting its competitors in price while providing a comparable level of luxury and technology. Reliability data is still emerging, but Genesis has demonstrated a commitment to quality and customer satisfaction.
Legacy
The G90 II LWB 3.5 T-GDi e-S/C V6 represents a significant step forward for the Genesis brand, establishing it as a serious contender in the luxury sedan segment. The Smartstream engine, with its innovative dual-charging system and mild-hybrid technology, showcases Genesis’s engineering prowess. While long-term reliability remains to be fully assessed, the G90 II LWB is expected to hold its value reasonably well in the used car market, appealing to buyers seeking a luxurious and well-equipped sedan at a competitive price. The combination of performance, comfort, and technology positions this variant as a desirable and sophisticated choice for discerning luxury car buyers.
