The SEAT Leon IV 1.0 eTSI (110 Hp) Mild Hybrid DSG, produced from January 2021 to July 2024, represents the fourth generation of SEAT’s popular compact hatchback. While SEAT is not a brand officially sold in the United States, the Leon is a significant model in the European market, competing with vehicles like the Volkswagen Golf, Ford Focus, and Opel Astra. The fourth-generation Leon introduced a new design language, increased technology, and a focus on fuel efficiency, particularly with the introduction of mild-hybrid powertrains like the 1.0 eTSI. This model aimed to balance performance with reduced emissions, catering to increasingly stringent European regulations and consumer demand for greener vehicles.
SEAT Leon IV 1.0 eTSI: Overview and Market Position
The Leon IV marked a substantial evolution for the SEAT Leon, built on the Volkswagen Group’s MQB Evo platform. This platform allowed for improvements in body rigidity, safety, and packaging. The 1.0 eTSI variant specifically targeted buyers seeking a cost-effective and fuel-efficient option within the Leon range. The “eTSI” designation indicates the inclusion of a 48-volt mild-hybrid system, designed to assist the gasoline engine and improve overall efficiency. The DSG (Direct-Shift Gearbox) transmission further enhances the driving experience with smooth and rapid gear changes. In Europe, the Leon is positioned as a stylish, practical, and technologically advanced hatchback, appealing to a broad demographic.
Engine & Performance
The heart of the Leon IV 1.0 eTSI is a 999 cc, three-cylinder turbocharged gasoline engine producing 110 horsepower at 5500 rpm and 200 Nm (147.51 lb.-ft.) of torque between 2000 and 3000 rpm. This engine utilizes direct fuel injection and an intercooler to optimize performance and efficiency. The mild-hybrid system, a 48-volt setup, incorporates a belt starter generator (BSG) and a small battery. The BSG allows for extended engine-off periods during coasting and deceleration, reducing fuel consumption. It also provides a power boost during acceleration, improving responsiveness. The engine’s power-to-liter ratio is an impressive 110.1 hp/liter. Performance figures include a 0-100 km/h (0-62 mph) acceleration time of 10.8 seconds and a top speed of 192 km/h (119.3 mph). The 0-60 mph time is calculated at 10.3 seconds. The front-wheel-drive configuration and seven-speed DSG transmission work in tandem to deliver a balanced driving experience.
Design & Features
The SEAT Leon IV 1.0 eTSI is a five-door hatchback with a sleek and modern design. The exterior features sharp lines, a distinctive front grille, and full LED headlights. The interior is characterized by a minimalist aesthetic, with a focus on digital connectivity. A key feature is the free-standing central infotainment touchscreen, which controls many of the vehicle’s functions. Safety features are comprehensive, including ABS (Anti-lock Braking System), and a suite of driver-assistance systems. The Leon IV offers a practical interior with a trunk capacity ranging from 380 liters (13.42 cu. ft.) with the rear seats up to 1301 liters (45.94 cu. ft.) with them folded down. The vehicle’s kerb weight is 1255 kg (2766.8 lbs), and it has a maximum permissible weight of 1860 kg (4100.6 lbs). The suspension utilizes an independent McPherson strut setup at the front and a coil spring elastic beam at the rear, providing a comfortable and controlled ride.
Technical Specifications
| Brand | Seat |
| Model | Leon |
| Generation | Leon IV |
| Type (Engine) | 1.0 eTSI (110 Hp) Mild Hybrid DSG |
| Start of production | January, 2021 |
| End of production | July, 2024 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 5 |
| Combined fuel consumption (WLTP) | 5.5-5.8 l/100 km (42.8 – 40.6 US mpg) |
| CO2 emissions (WLTP) | 124-132 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 10.8 sec |
| Acceleration 0 – 62 mph | 10.8 sec |
| Acceleration 0 – 60 mph | 10.3 sec |
| Maximum speed | 192 km/h (119.3 mph) |
| Emission standard | Euro 6 AP |
| Weight-to-power ratio | 11.4 kg/Hp |
| Power | 110 Hp @ 5500 rpm |
| Torque | 200 Nm @ 2000-3000 rpm (147.51 lb.-ft.) |
| Engine layout | Front, Transverse |
| Engine Model/Code | DLA |
| Engine displacement | 999 cm3 (60.96 cu. in.) |
| Number of cylinders | 3 |
| Engine configuration | Inline |
| Cylinder Bore | 74.5 mm (2.93 in.) |
| Piston Stroke | 76.4 mm (3.01 in.) |
| Compression ratio | 11.5:1 |
| Engine oil capacity | 4 l (4.23 US qt | 3.52 UK qt) |
| Coolant | 8 l (8.45 US qt | 7.04 UK qt) |
| Kerb Weight | 1255 kg (2766.8 lbs.) |
| Max. weight | 1860 kg (4100.6 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 | 9.9 UK gal) |
| Length | 4368 mm (171.97 in.) |
| Width | 1800 mm (70.87 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 |
| Front brakes | Ventilated discs, 288×25 mm |
| Rear brakes | Disc, 272×10 mm |
| Tires size | 205/50 R17 93V; 225/40 R18 92Y |
The SEAT Leon IV 1.0 eTSI Mild Hybrid DSG represents a significant step towards more efficient and environmentally friendly motoring in the compact hatchback segment. Its combination of a turbocharged engine, mild-hybrid technology, and a sophisticated DSG transmission delivers a compelling package for European drivers.
