The Genesis G80 I 5.0 GDi V8, produced from 2017 to 2020, represents the flagship powertrain offering for the first generation of Genesis’s mid-size luxury sedan. Introduced as a standalone brand spun off from Hyundai, Genesis aimed to establish itself as a premium automotive manufacturer, and the G80 – previously known as the Hyundai Genesis – was central to this strategy. The 5.0-liter V8 model occupied the top tier of the G80 lineup, providing a significant step up in performance and refinement compared to the 3.8-liter V6 and 2.0-liter turbocharged four-cylinder options. This variant was primarily marketed towards buyers seeking a powerful, comfortable, and technologically advanced luxury sedan, competing with established players like the BMW 5 Series, Mercedes-Benz E-Class, and Audi A6.
Technical Specifications
| Brand | Genesis |
| Model | G80 |
| Generation | G80 I |
| Type (Engine) | 5.0 GDi V8 (420 Hp) AWD Automatic |
| Start of production | 2017 |
| End of production | 2020 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 14.7-15.7 l/100 km (16-19 US mpg) |
| Fuel consumption (extra urban) | 9.8-10.2 l/100 km (23.1-24 US mpg) |
| Fuel consumption (combined) | 12.4-13.1 l/100 km (18-19 US mpg) |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 5.1 kg/Hp |
| Weight-to-torque ratio | 4.1 kg/Nm |
| Power | 420 Hp @ 6000 rpm |
| Power per litre | 83.4 Hp/l |
| Torque | 519 Nm @ 5000 rpm (382.79 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 |
| Cylinder Bore | 96 mm (3.78 in.) |
| Piston Stroke | 87 mm (3.43 in.) |
| Compression ratio | 12:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC, D-CVVT |
| Engine oil capacity | 9.2 l (9.72 US qt | 8.09 UK qt) |
| Coolant capacity | 11.3 l (11.94 US qt | 9.94 UK qt) |
| Kerb Weight | 2139 kg (4715.69 lbs.) |
| Max. weight | 2570 kg (5665.88 lbs.) |
| Max load | 431 kg (950.19 lbs.) |
| Trunk (boot) space | 433 l (15.29 cu. ft.) |
| Fuel tank capacity | 77 l (20.34 US gal | 16.94 UK gal) |
| Length | 4990 mm (196.46 in.) |
| Width | 1890 mm (74.41 in.) |
| Height | 1480 mm (58.27 in.) |
| Wheelbase | 3010 mm (118.5 in.) |
| Front track | 1620 mm (63.78 in.) |
| Rear track | 1633 mm (64.29 in.) |
| Front overhang | 845 mm (33.27 in.) |
| Rear overhang | 1135 mm (44.69 in.) |
| Ride height (ground clearance) | 130 mm (5.12 in.) |
| Drag coefficient (Cd) | 0.27 |
| Minimum turning circle | 11.4 m (37.4 ft.) |
| Drivetrain Architecture | All wheel drive (4×4) |
| Number of gears | 8 |
| Gearbox type | Automatic transmission |
| Front suspension | Coil spring, Independent multi-link suspension, Transverse stabilizer |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs, 360 mm |
| Rear brakes | Disc, 315 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Front tires | 245/40 R19 |
| Rear tires | 275/35 R19 |
| Front wheel rims | 8.5J x 19 |
| Rear wheel rims | 9J x 19 |
Powertrain & Engine Architecture
At the heart of the G80 5.0 GDi V8 lies the Tau V8 engine, designated as the G8BE. This naturally aspirated 5.0-liter engine is a cornerstone of Genesis’s engineering prowess. It features direct injection (GDi) technology, which precisely meters fuel directly into the combustion chambers, enhancing efficiency and power output. The engine utilizes a double overhead camshaft (DOHC) valvetrain with continuously variable valve timing (D-CVVT) on both intake and exhaust valves, optimizing engine breathing across the rev range. The 8-speed automatic transmission, sourced from ZF, is a crucial component, providing smooth and responsive gear changes. This transmission is known for its efficiency and durability, contributing to the overall refined driving experience. The engine produces 420 horsepower at 6,000 rpm and 382.79 lb-ft of torque at 5,000 rpm.
Driving Characteristics
The G80 5.0 GDi V8 delivers a distinctly different driving experience compared to its four and six-cylinder siblings. The substantial torque output of the V8 engine provides effortless acceleration in all driving situations. While not overtly sporty, the G80 V8 offers a confident and composed ride, thanks to its well-tuned suspension and all-wheel-drive system. The 8-speed automatic transmission is programmed for comfort, with smooth upshifts and downshifts. Compared to the more fuel-efficient models, the V8 prioritizes performance and refinement over outright economy. The all-wheel-drive system provides enhanced traction and stability, particularly in inclement weather conditions.
Equipment & Trim Levels
The 5.0 GDi V8 trim typically came standard with a comprehensive suite of luxury features. These included leather upholstery, heated and ventilated front seats, a premium sound system (often Lexicon branded), a large infotainment touchscreen with navigation, and a suite of advanced driver-assistance systems (ADAS) such as adaptive cruise control, lane keeping assist, and automatic emergency braking. Optional extras included a panoramic sunroof, rear seat entertainment, and upgraded interior trim materials. The G80 V8 was positioned as the top-of-the-line model, offering the highest level of luxury and technology.
Chassis & Braking
The G80 I featured a robust chassis with a multi-link suspension system at both the front and rear. The V8 models often received slightly stiffer suspension tuning compared to the lower trims to better manage the increased weight and power. Braking duties were handled by ventilated disc brakes at all four corners, with larger rotors on the front axle. The G80 was equipped with an anti-lock braking system (ABS) and electronic stability control (ESC) as standard safety features. The all-wheel-drive system contributes to enhanced braking performance and stability, particularly on slippery surfaces.
Market Reception & Comparison
Critics generally praised the G80 5.0 GDi V8 for its powerful engine, comfortable ride, and luxurious interior. However, some reviewers noted that the fuel economy was relatively poor compared to its competitors. Compared to the 3.8-liter V6, the V8 offered a significant performance upgrade but came at a higher price point. The 2.0-liter turbocharged four-cylinder provided better fuel economy but lacked the V8’s effortless power and refinement. The G80 V8 successfully positioned Genesis as a credible contender in the luxury sedan segment, challenging established brands with its combination of value, performance, and features.
Legacy
The Genesis G80 I 5.0 GDi V8 has proven to be a relatively reliable powertrain. The Tau V8 engine is known for its durability, and the ZF 8-speed automatic transmission is widely regarded as one of the best in the industry. On the used car market, these models hold their value reasonably well, attracting buyers who appreciate the combination of luxury, performance, and reliability. While maintenance costs for a V8 engine are generally higher than those for smaller engines, the G80 V8 remains a desirable option for those seeking a premium luxury sedan with a powerful and refined driving experience.
