The SEAT Leon IV 1.5 eTSI (116 Hp) Mild Hybrid DSG represents the fourth generation of SEAT’s popular compact hatchback. Introduced in July 2024, this model is a key component of SEAT’s strategy to offer more efficient and technologically advanced vehicles. While SEAT vehicles are not officially sold in the United States, the Leon is a significant player in the European market, competing with vehicles like the Volkswagen Golf, Ford Focus, and Opel Astra. The Leon IV builds upon the success of its predecessors, offering a blend of practicality, style, and modern technology, with this particular variant focusing on fuel efficiency through its mild hybrid powertrain.
SEAT Leon IV 1.5 eTSI: A Detailed Overview
The Leon IV represents a substantial evolution in SEAT’s design and engineering. It’s built on the Volkswagen Group’s MQB Evo platform, which allows for greater flexibility in powertrain options and improved structural rigidity. The 1.5 eTSI variant specifically targets drivers seeking a balance between performance and economy, utilizing a 48-volt mild hybrid system to enhance fuel efficiency and reduce emissions. This model is positioned as a mainstream offering within the Leon lineup, appealing to a broad range of buyers.
Engine & Performance
At the heart of the SEAT Leon IV 1.5 eTSI is a 1.5-liter inline four-cylinder gasoline engine. This engine produces 116 horsepower at 5000-6000 rpm and 220 Nm (162.26 lb.-ft.) of torque between 1500-3000 rpm. The engine features direct fuel injection and a turbocharger with an intercooler, optimizing both power delivery and efficiency. The “eTSI” designation indicates the inclusion of a 48-volt mild hybrid system. This system comprises a belt starter generator (BSG) and a small 48V battery. The BSG allows for extended engine-off periods while coasting, regenerative braking to recapture energy, and provides a power boost during acceleration. This mild hybridization contributes to a combined fuel consumption of 5.3-5.6 liters per 100 kilometers (44.4 – 42 US mpg), and CO2 emissions of 120-127 grams per kilometer. Power is delivered to the front wheels via a seven-speed dual-clutch transmission (DSG), providing smooth and rapid gear changes. Acceleration from 0 to 100 km/h (0-62 mph) takes 10.4 seconds, while 0-60 mph is achieved in approximately 9.9 seconds. The vehicle has a maximum speed of 197 km/h (122.41 mph).
Design & Features
The SEAT Leon IV boasts a modern and dynamic exterior design. As a hatchback, it offers a practical five-door layout with seating for five passengers. The vehicle’s dimensions are 4368 mm (171.97 in) in length, 1799 mm (70.83 in) in width, and 1442-1456 mm (56.77 – 57.32 in) in height. The wheelbase measures 2686 mm (105.75 in). The interior of the Leon IV is characterized by a minimalist design with a focus on technology. A key feature is the large central touchscreen infotainment system, which controls many of the vehicle’s functions. Standard and optional features include advanced driver-assistance systems (ADAS) such as adaptive cruise control, lane keeping assist, and automatic emergency braking. Safety is a priority, with the Leon IV incorporating a robust suite of passive safety features, including multiple airbags and a reinforced body structure. The trunk offers a versatile 380 liters (13.42 cu. ft.) of space with the rear seats up, expanding to 1301 liters (45.94 cu. ft.) when the seats are folded down.
Technical Specifications
| Brand | Seat |
| Model | Leon |
| Generation | Leon IV |
| Type (Engine) | 1.5 eTSI (116 Hp) Mild Hybrid DSG |
| Start of production | July, 2024 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 5 |
| Combined fuel consumption (WLTP) | 5.3-5.6 l/100 km (44.4 – 42 US mpg) |
| CO2 emissions (WLTP) | 120-127 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 10.4 sec |
| Acceleration 0 – 62 mph | 10.4 sec |
| Acceleration 0 – 60 mph | 9.9 sec |
| Maximum speed | 197 km/h (122.41 mph) |
| Emission standard | Euro 6 EA |
| Weight-to-power ratio | 11.1 kg/Hp |
| Weight-to-torque ratio | 5.9 kg/Nm |
| Power | 116 Hp @ 5000-6000 rpm |
| Torque | 220 Nm @ 1500-3000 rpm (162.26 lb.-ft.) |
| Engine layout | Front, Transverse |
| Engine Model/Code | DXD |
| Engine displacement | 1498 cm3 (91.41 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 74.5 mm (2.93 in.) |
| Piston Stroke | 85.9 mm (3.38 in.) |
| Compression ratio | 12:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Turbocharger, Intercooler |
| Kerb Weight | 1293 kg (2850.58 lbs.) |
| Max. weight | 1860 kg (4100.6 lbs.) |
| Max load | 567 kg (1250.02 lbs.) |
| Trunk (boot) space – minimum | 380 l (13.42 cu. ft.) |
| Trunk (boot) space – maximum | 1301 l (45.94 cu. ft.) |
| Fuel tank capacity | 45 l (11.89 US gal) |
| Length | 4368 mm (171.97 in.) |
| Width | 1799 mm (70.83 in.) |
| Height | 1442-1456 mm (56.77 – 57.32 in.) |
| Wheelbase | 2686 mm (105.75 in.) |
| Number of gears and type of gearbox | 7 gears, automatic transmission DSG |
The SEAT Leon IV 1.5 eTSI Mild Hybrid DSG represents a compelling option in the competitive compact hatchback segment. Its combination of fuel efficiency, modern technology, and practical design makes it a popular choice for European drivers. While not available in the US market, it exemplifies the advancements being made in powertrain technology and vehicle design within the global automotive industry.
