The Hyundai Sonata VIII (DN8), particularly the facelifted version introduced in March 2023, represents a significant evolution of Hyundai’s mid-size sedan. The L2.0 (146 hp) LPG Automatic variant occupied a specific niche within the DN8 lineup, offering an alternative fuel option combined with the convenience of an automatic transmission. This model was primarily targeted towards markets where LPG (Liquefied Petroleum Gas) is a popular and readily available fuel source, offering a balance between cost savings and practicality. The DN8 generation Sonata marked a departure from its predecessors with a more expressive design language and a focus on advanced technology.
Technical Specifications
| Brand | Hyundai |
| Model | Sonata |
| Generation | Sonata VIII (DN8, facelift 2023) |
| Type (Engine) | L2.0 (146 Hp) LPG Automatic |
| Start of production | March, 2023 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 11.9-12.2 l/100 km (19.8 – 19.3 US mpg) |
| Fuel consumption (extra urban) | 8.3-8.7 l/100 km (28.3 – 27 US mpg) |
| Fuel consumption (combined) | 10.3-10.6 l/100 km (22.8 – 22.2 US mpg) |
| CO2 emissions | 134-138 g/km |
| Fuel Type | LPG |
| Weight-to-power ratio | 10.1 kg/Hp |
| Weight-to-torque ratio | 7.7 kg/Nm |
| Power | 146 Hp @ 6000 rpm |
| Power per litre | 73 Hp/l |
| Torque | 191 Nm @ 4200 rpm (140.87 lb.-ft. @ 4200 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | Smartstream |
| Engine displacement | 1999 cm3 (121.99 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine systems | Start & Stop System |
| Kerb Weight | 1480-1505 kg (3262.84 – 3317.96 lbs.) |
| Trunk (boot) space | 360 l (12.71 cu. ft.) |
| Fuel tank capacity | 64 l (16.91 US gal | 14.08 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 | 1618-1633 mm (63.7 – 64.29 in.) |
| Rear track | 1625-1640 mm (63.98 – 64.57 in.) |
| Drivetrain Architecture | Front wheel drive |
| Number of gears | 6 |
| Gearbox type | Automatic transmission |
| 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 | 205/65 R16; 215/55 R17; 235/45 R18 |
| Wheel rims size | 6.5J x 16; 7J x 17; 7.5J x 18 |
Powertrain & Engine Architecture
The heart of the Sonata L2.0 LPG Automatic is Hyundai’s Smartstream engine, a 1.999-liter inline-four cylinder powerplant specifically adapted for LPG fuel. This engine utilizes a multi-point fuel injection system, delivering fuel directly into the intake ports. The Smartstream engine family is known for its focus on efficiency and reduced emissions. While specific details regarding the LPG conversion process vary, it typically involves modified fuel injectors, a dedicated LPG fuel tank, and a control system to manage the switch between gasoline and LPG. The engine produces 146 horsepower at 6000 rpm and 191 Nm (140.87 lb-ft) of torque at 4200 rpm. This engine is paired with a six-speed automatic transmission, chosen for its smooth operation and ease of use, particularly appealing to drivers prioritizing comfort over sporty performance.
Driving Characteristics
The 146 hp output and automatic transmission configuration of the Sonata L2.0 LPG deliver a comfortable and predictable driving experience. Acceleration is adequate for everyday driving situations, but it’s not particularly brisk. The automatic transmission is tuned for fuel efficiency, resulting in relatively conservative gear ratios. Compared to the gasoline-powered Sonata variants, or those equipped with a manual transmission, the LPG model offers slightly less overall performance. However, the smooth power delivery and automatic transmission make it well-suited for urban commuting and highway cruising. The focus is on providing a relaxed and refined driving experience rather than outright speed.
Equipment & Trim Levels
The Sonata L2.0 LPG Automatic typically came equipped with a respectable level of standard features. These generally included air conditioning, power windows and locks, a basic audio system with Bluetooth connectivity, and standard safety features like ABS and airbags. Higher trim levels offered upgrades such as a larger touchscreen infotainment system, navigation, leather upholstery, and advanced driver-assistance systems (ADAS) like lane departure warning and automatic emergency braking. The specific trim levels and available options varied depending on the market.
Chassis & Braking
The Sonata DN8 utilizes a front-wheel-drive platform with a MacPherson strut front suspension and a multi-link rear suspension. The braking system consists of ventilated discs at the front and solid discs at the rear. The suspension tuning is geared towards providing a comfortable ride, prioritizing smoothness over sporty handling. The steering is electrically assisted, offering light and easy steering feel. The weight distribution is fairly balanced, contributing to stable handling characteristics.
Market Reception & Comparison
The Sonata L2.0 LPG Automatic was primarily aimed at consumers in markets where LPG is a cost-effective and widely available fuel. Critics generally praised the model for its fuel efficiency and smooth driving experience. However, the lower power output compared to gasoline variants was a common point of criticism. In terms of fuel economy, the LPG model offered comparable or slightly better efficiency than the gasoline-powered Sonata, depending on driving conditions and LPG prices. Reliability was generally good, with the Smartstream engine proving to be a durable and dependable unit.
Legacy
The Hyundai Sonata L2.0 LPG Automatic represents a practical and economical option for consumers seeking a mid-size sedan with an alternative fuel source. While LPG-powered vehicles are becoming less common in some markets, the Sonata L2.0 LPG remains a viable option in regions where LPG infrastructure is well-established. The Smartstream engine’s durability and the smooth operation of the six-speed automatic transmission contribute to the model’s long-term reliability. On the used car market, these models are often sought after by budget-conscious buyers looking for a comfortable and fuel-efficient vehicle.
