The Hyundai Sonata VIII (DN8), particularly the facelifted 2023 model year, represents a significant evolution of Hyundai’s mid-size sedan. Introduced in March 2023, the G2.5 T-GDi variant, equipped with a 290 horsepower turbocharged engine and a dual-clutch transmission (DCT), occupies the top performance tier within the DN8 Sonata lineup. This model aimed to provide a more engaging driving experience and compete directly with established players in the segment, such as the Honda Accord and Toyota Camry, offering a blend of style, technology, and performance. The DN8 generation, launched in 2019, marked a departure from previous Sonata designs with its more expressive and coupe-like silhouette.
Technical Specifications
| Brand | Hyundai |
| Model | Sonata |
| Generation | Sonata VIII (DN8, facelift 2023) |
| Type (Engine) | G2.5 T-GDi (290 Hp) DCT |
| Start of production | March, 2023 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 10.6 l/100 km (22.2 US mpg) |
| Fuel consumption (extra urban) | 7.1 l/100 km (33.1 US mpg) |
| Fuel consumption (combined) | 9 l/100 km (26.1 US mpg) |
| CO2 emissions | 152 g/km |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 5.6 kg/Hp |
| Weight-to-torque ratio | 3.8 kg/Nm |
| Power | 290 Hp @ 5800 rpm |
| Power per litre | 116.1 Hp/l |
| Torque | 421 Nm @ 1650-4000 rpm (310.51 lb.-ft. @ 1650-4000 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | Smartstream |
| Engine displacement | 2497 cm3 (152.38 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Turbocharger, Intercooler |
| Engine systems | Start & Stop System |
| Kerb Weight | 1610 kg (3549.44 lbs.) |
| Trunk (boot) space (minimum) | 480 l (16.95 cu. ft.) |
| Fuel tank capacity | 60 l (15.85 US gal | 13.2 UK gal) |
| Length | 4910 mm (193.31 in.) |
| Width | 1860 mm (73.23 in.) |
| Height | 1445 mm (56.89 in.) |
| Wheelbase | 2840 mm (111.81 in.) |
| Front track | 1610 mm (63.39 in.) |
| Rear (Back) track | 1617 mm (63.66 in.) |
| Drivetrain Architecture | Front wheel drive |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 8 gears, automatic transmission DCT |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 245/40 R19 |
| Wheel rims size | 8J x 19 |
Powertrain & Engine Architecture
The heart of the Sonata G2.5 T-GDi is Hyundai’s Smartstream 2.5-liter turbocharged inline-four cylinder engine. This engine utilizes direct injection technology to maximize fuel efficiency and power output. The Smartstream engine family is known for its focus on reducing friction and optimizing combustion. The engine produces 290 horsepower at 5800 rpm and 421 Nm (310.51 lb.-ft.) of torque between 1650 and 4000 rpm, providing a broad torque curve for responsive acceleration. The turbocharger, coupled with an intercooler, helps to manage intake air temperature and maintain consistent performance. The engine is paired with an 8-speed dual-clutch transmission (DCT). DCTs offer faster and more precise gear changes compared to traditional automatic transmissions, contributing to a more sporty driving experience. The DCT in the Sonata is tuned for both performance and fuel efficiency, with smooth transitions between gears.
Driving Characteristics
The 290 hp output and the DCT transmission give the Sonata G2.5 T-GDi a noticeably more spirited driving experience than lower-trim models. Acceleration is brisk, and the engine provides ample power for highway merging and overtaking. The DCT contributes to quick and seamless gear changes, enhancing the overall responsiveness. While not a dedicated sports sedan, the G2.5 T-GDi offers a level of performance that is competitive within its class. Compared to the naturally aspirated 2.5-liter engine found in other Sonata trims, the turbocharged version delivers significantly more torque at lower engine speeds. The suspension is tuned to provide a balance between comfort and handling, offering a reasonably composed ride even on less-than-perfect road surfaces. The steering is precise and well-weighted, providing good feedback to the driver.
Equipment & Trim Levels
The G2.5 T-GDi trim typically comes well-equipped with standard features. These often include leather upholstery, a panoramic sunroof, a premium sound system, a large touchscreen infotainment system 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 could include a head-up display, ventilated front seats, and a wireless charging pad. The interior design emphasizes a modern and minimalist aesthetic, with high-quality materials and a focus on user-friendliness. The overall cabin ambiance is upscale and refined.
Chassis & Braking
The Sonata G2.5 T-GDi utilizes a front-wheel-drive platform with a MacPherson strut front suspension and a multi-link rear suspension. This suspension setup is designed to provide a comfortable ride while maintaining good handling characteristics. The braking system consists of ventilated discs at the front and solid discs at the rear. Anti-lock braking system (ABS) is standard, along with electronic stability control and traction control. The steering system employs an electric power steering (EPS) system, which provides precise and responsive steering feel. The 245/40 R19 tires offer good grip and contribute to the vehicle’s overall handling performance.
Market Reception & Comparison
The Sonata G2.5 T-GDi was generally well-received by automotive critics, who praised its stylish design, spacious interior, and strong performance. The turbocharged engine and DCT transmission were highlighted as key strengths. Fuel economy figures, while not class-leading, were considered acceptable for a vehicle with this level of performance. Compared to other trims in the Sonata lineup, the G2.5 T-GDi offered a significant performance upgrade, but at a higher price point. It positioned itself as a competitor to the Honda Accord 2.0T and the Toyota Camry XSE, offering a compelling alternative with a more modern design and a longer warranty.
Legacy
The Smartstream engine family, including the 2.5-liter T-GDi, has proven to be relatively reliable in early reports. The DCT transmission, while offering performance benefits, requires regular maintenance (fluid changes) to ensure long-term durability. As the DN8 Sonata ages, the G2.5 T-GDi variant is expected to hold its value relatively well due to its desirable performance characteristics. On the used car market, these models are sought after by buyers looking for a stylish and capable mid-size sedan with a bit more punch than the standard offerings. The 2023 facelift further enhanced the Sonata’s appeal, solidifying its position as a competitive player in the mid-size sedan segment.
