The Genesis G90, initially launched as the Hyundai EQ900 in South Korea, represents Genesis’s flagship luxury sedan. The first generation (G90 I), produced from 2016 to 2021, underwent a significant facelift in 2018. This refresh brought updated styling, enhanced technology, and powertrain refinements. The 5.0 GDi V8 variant, producing 425 horsepower and paired with an eight-speed automatic transmission and all-wheel drive, was positioned as the top-tier offering within the G90 lineup, aimed at competing with established luxury brands like Mercedes-Benz, BMW, and Lexus. Production of this specific configuration ran from 2018 through December 2021.
Technical Specifications
| Brand | Genesis |
| Model | G90/EQ900 |
| Generation | G90 I (facelift 2018) |
| Type (Engine) | 5.0 GDi V8 (425 Hp) AWD Automatic |
| Start of production | 2018 |
| End of production | December, 2021 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 4 |
| Doors | 4 |
| Fuel consumption (urban) | 16.1 l/100 km (14.6 US mpg, 17.5 UK mpg, 6.2 km/l) |
| Fuel consumption (extra urban) | 10.7 l/100 km (22 US mpg, 26.4 UK mpg, 9.3 km/l) |
| Fuel consumption (combined) | 13.7 l/100 km (17.2 US mpg, 20.6 UK mpg, 7.3 km/l) |
| CO2 emissions | 239 g/km |
| Fuel Type | Petrol (Gasoline) |
| Power | 425 Hp @ 6000 rpm |
| Power per litre | 84.4 Hp/l |
| Torque | 520 Nm @ 5000 rpm (383.53 lb.-ft. @ 5000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | Tau / G8BE |
| Engine displacement | 5038 cm3 (307.44 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Fuel injection system | Direct injection |
| Engine oil capacity | 9.2 l (9.72 US qt | 8.09 UK qt) |
| Coolant capacity | 11.4 l (12.05 US qt | 10.03 UK qt) |
| Max. weight | 2245 kg (4949.38 lbs.) |
| Fuel tank capacity | 83 l (21.93 US gal | 18.26 UK gal) |
| Length | 5205 mm (204.92 in.) |
| Width | 1915 mm (75.39 in.) |
| Height | 1495 mm (58.86 in.) |
| Wheelbase | 3160 mm (124.41 in.) |
| Front track | 1640 mm (64.57 in.) |
| Rear track | 1639 mm (64.53 in.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears | 8 |
| Gearbox type | Automatic transmission |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
Powertrain & Engine Architecture
The heart of the G90 5.0 GDi is the Tau V8 engine, designated as the G8BE. This naturally aspirated 5.0-liter engine utilizes direct injection (GDi) technology to maximize fuel efficiency and power output. The engine features a dual overhead camshaft (DOHC) valvetrain with continuously variable valve timing (CVVT) on both intake and exhaust sides. This allows for optimized engine performance across a wider range of engine speeds. The 8-speed automatic transmission, developed in-house by Hyundai/Genesis, is designed for smooth and responsive shifting. The all-wheel-drive system employs a multi-plate clutch to distribute torque between the front and rear axles, enhancing traction and stability in various driving conditions.
Driving Characteristics
The 5.0L V8 paired with the eight-speed automatic delivers a refined and powerful driving experience. With 425 horsepower and 383 lb-ft of torque, the G90 offers brisk acceleration, capable of reaching 60 mph in around 5.3 seconds. The automatic transmission is tuned for comfort, with smooth gear changes and a focus on minimizing harshness. While not as overtly sporty as some of its European rivals, the G90 prioritizes a relaxed and composed ride. The all-wheel-drive system provides confident handling in inclement weather. Compared to the 3.3T twin-turbo V6 variant, the 5.0L V8 offers a more linear power delivery and a distinct exhaust note, appealing to drivers who prefer a traditional V8 experience. The 5.0L is noticeably quicker than the base 3.8L V6 model.
Equipment & Trim Levels
The 5.0 GDi V8 was typically offered in the highest trim level of the G90, often referred to as the “Ultimate” or “Prestige” package. Standard features included premium leather upholstery, heated and ventilated front and rear seats, a Lexicon premium sound system, a large infotainment display with navigation, a suite of advanced driver-assistance systems (ADAS) such as adaptive cruise control, lane keeping assist, and blind-spot monitoring, and power-adjustable rear seats with massage functions. Optional extras often included a rear-seat entertainment system, a head-up display, and a panoramic sunroof. The interior design emphasized luxury and spaciousness, with high-quality materials and meticulous attention to detail.
Chassis & Braking
The G90 features a fully independent suspension system, with multi-link setups at both the front and rear. This contributes to a comfortable ride and precise handling. The suspension is electronically controlled, allowing for adjustments to damping rates based on driving conditions. The G90 5.0 GDi is equipped with ventilated disc brakes on all four wheels, providing ample stopping power. The electronic stability control (ESC) system and anti-lock braking system (ABS) work in conjunction to enhance safety and control. The steering is power-assisted and offers a comfortable weight and feel.
Market Reception & Comparison
Critics generally praised the G90 5.0 GDi for its luxurious interior, smooth ride, and powerful engine. However, some reviewers noted that its styling was somewhat conservative compared to its European competitors. Fuel economy was a common criticism, with the combined fuel consumption of 17.2 US mpg being relatively low for a luxury sedan. Compared to the 3.3T V6, the 5.0L V8 offered a more prestigious driving experience but came at the cost of increased fuel consumption and a higher price tag. Reliability reports have been generally positive, with the Tau V8 engine proving to be a durable and dependable powerplant.
Legacy
The Genesis G90 5.0 GDi V8 established Genesis as a serious contender in the luxury sedan segment. While the first generation has been replaced by a newer model, the 5.0L V8 variant remains a desirable option on the used car market, particularly for buyers who prioritize a smooth, powerful, and well-equipped luxury vehicle. The Tau V8 engine has earned a reputation for reliability, and parts availability is generally good. The G90’s success paved the way for Genesis to expand its lineup and further refine its brand image, solidifying its position as a legitimate luxury automaker.
