The Genesis G90 II LWB 3.5 T-GDi e-S/C V6 represents the pinnacle of Genesis’s full-size luxury sedan offerings. Introduced in 2022, this long-wheelbase variant builds upon the foundation of the second-generation G90 (internally known as the EQ900 in some markets), aiming to compete directly with established rivals like the BMW 7 Series, Mercedes-Benz S-Class, and Lexus LS. The “LWB” designation signifies an extended wheelbase, prioritizing rear passenger comfort and interior space. This particular configuration, featuring a 3.5-liter twin-turbocharged V6 engine paired with a mild-hybrid system and an eight-speed automatic transmission, is positioned as the primary powertrain option for the US market, balancing performance with efficiency and refinement.
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 4 Seat |
| Start of production | 2022 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Sedan |
| Seats | 4 |
| 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 | 5.7 kg/Hp, 177 Hp/tonne |
| Weight-to-torque ratio | 4.3 kg/Nm, 234.1 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 | 2345 kg (5169.84 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
At the heart of the G90 II LWB 3.5 T-GDi lies the Smartstream G6DV engine, a 3.5-liter V6 employing both turbocharging and a supercharger (hence the “e-S/C” designation). This combination aims to deliver both immediate low-end response from the supercharger and sustained high-end power from the turbocharger, minimizing turbo lag. Direct injection further enhances efficiency and power output. The engine produces 415 horsepower at 5800 rpm and a substantial 404.92 lb-ft of torque available from a low 1300 rpm all the way to 4500 rpm. The mild-hybrid system, operating on a 48V architecture, provides a small power boost during acceleration and enables features like start-stop functionality for improved fuel economy. The engine is longitudinally mounted, driving power to all four wheels through an eight-speed automatic transmission. This transmission is tuned for smooth and refined shifts, prioritizing comfort over aggressive performance.
Driving Characteristics
The G90 II LWB 3.5 T-GDi delivers a driving experience focused on comfort and effortless power. The combination of the twin-turbocharged V6 and the eight-speed automatic provides ample acceleration for highway merging and passing maneuvers. While not overtly sporty, the car feels surprisingly agile for its size, thanks in part to the all-wheel-drive system. The automatic transmission’s gear ratios are optimized for relaxed cruising, with taller gearing in higher gears to reduce engine noise and improve fuel efficiency. Compared to a hypothetical rear-wheel-drive version, the AWD system provides enhanced traction in inclement weather. The mild-hybrid system is largely transparent to the driver, providing a subtle boost during acceleration but not dramatically altering the driving experience.
Equipment & Trim Levels
The G90 II LWB 3.5 T-GDi typically comes standard with a comprehensive suite of luxury features. Expect premium leather upholstery, heated and ventilated front and rear seats, a large infotainment touchscreen with navigation, a premium sound system, and a host of advanced driver-assistance systems (ADAS) including adaptive cruise control, lane-keeping assist, and automatic emergency braking. The long wheelbase translates to generous rear legroom, often including power-adjustable rear seats with massage functions. Optional extras can include a rear-seat entertainment system, a head-up display, and upgraded interior trim materials. The focus is on providing a luxurious and technologically advanced experience for both the driver and passengers.
Chassis & Braking
The G90 II LWB utilizes a sophisticated chassis design aimed at maximizing ride comfort and handling stability. It features a multi-link suspension system at all four corners, with electronically controlled dampers to adjust to varying road conditions. The long wheelbase contributes to a smoother ride by absorbing bumps and imperfections in the road surface. Braking duties are handled by ventilated discs at all four wheels, providing ample stopping power. Anti-lock braking system (ABS) and electronic stability control (ESC) are standard features, enhancing safety and control. The steering is electrically assisted, offering a light and precise 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. However, some reviewers have noted that it lacks the brand cachet of its established European rivals. Fuel economy, at 19.3 US mpg combined, is typical for a large luxury sedan with this level of performance. Compared to other G90 trims, the 3.5 T-GDi offers a compelling balance of power and efficiency, making it a popular choice for buyers who prioritize a refined driving experience. Reliability data is still emerging, but Genesis has demonstrated a commitment to quality and customer satisfaction.
Legacy
The Genesis G90 II LWB 3.5 T-GDi represents a significant step forward for the Genesis brand, establishing it as a serious contender in the luxury sedan segment. The Smartstream engine and mild-hybrid technology showcase Genesis’s commitment to innovation and efficiency. While long-term reliability remains to be fully assessed, the G90 II LWB is poised to become a desirable and well-regarded luxury car in the used car market, offering a compelling alternative to traditional German and Japanese competitors.
