The SEAT Leon III ST (facelift 2016) 1.5 TGI (130 Hp) is a compact station wagon produced by the Spanish automobile manufacturer SEAT from 2018 to 2020. As part of the third generation of the Leon, the ST (SportTourer) variant offered increased practicality and cargo space compared to the hatchback model. This particular version is notable for its bi-fuel capability, running on both gasoline and Compressed Natural Gas (CNG), making it a relatively environmentally conscious option within its segment, particularly in European markets where CNG infrastructure is more developed. The Leon, in general, is a key model for SEAT, representing their entry into the competitive C-segment, rivaling vehicles like the Volkswagen Golf, Ford Focus, and Opel Astra.
SEAT Leon III ST 1.5 TGI: A Bi-Fuel Compact Wagon
The facelifted Leon III ST, introduced in 2016, brought updated styling, improved technology, and refined engine options. The 1.5 TGI model specifically caters to drivers seeking lower running costs and reduced emissions. While not officially sold in the United States, the Leon is a popular choice in Europe, known for its blend of practicality, sporty handling, and value for money. The TGI designation signifies SEAT’s commitment to alternative fuel vehicles, offering a bridge between traditional gasoline engines and fully electric options.
Engine & Performance
The heart of the Leon ST 1.5 TGI is a 1.5-liter inline four-cylinder turbocharged engine. This engine is designed to run primarily on Compressed Natural Gas (CNG), with gasoline serving as a backup fuel source when CNG is unavailable. The engine produces 130 horsepower at 5000-6000 rpm and 200 Nm (147 lb-ft) of torque between 1400-4000 rpm. The direct injection system and turbocharger contribute to both efficiency and responsiveness. The engine’s power-to-weight ratio is 9.7 kg/Hp, and its torque-to-weight ratio is 6.3 kg/Nm. Acceleration from 0 to 100 km/h (0-62 mph) takes 10.1 seconds, while 0-60 mph is achieved in approximately 9.6 seconds. Fuel economy is a key benefit of the TGI system, with combined CNG consumption ranging from 3.7 to 3.8 kg/100 km, resulting in CO2 emissions of 98-102 g/km. The engine meets Euro 6 emission standards.
Design & Features
The SEAT Leon III ST is a five-door, five-seat station wagon. The ST body style provides a significant increase in cargo capacity compared to the hatchback version, making it a practical choice for families or those requiring ample space for luggage or equipment. The facelifted model features a more aggressive front fascia, updated headlights, and revised rear styling. Inside, the cabin is well-appointed with a focus on functionality and modern design. Standard features typically include air conditioning, a touchscreen infotainment system, and various driver-assistance systems. Safety features, crucial in modern vehicles, include ABS (Anti-lock Braking System) and a comprehensive airbag system. The Leon ST prioritizes a balance between sporty aesthetics and everyday usability. The vehicle’s dimensions are 4549 mm (179.09 in) in length, 1816 mm (71.5 in) in width, and 1454 mm (57.24 in) in height, with a wheelbase of 2636 mm (103.78 in).
Technical Specifications
| Brand | Seat |
| Model | Leon |
| Generation | Leon III ST (facelift 2016) |
| Type (Engine) | 1.5 TGI (130 Hp) |
| Start of production | 2018 |
| End of production | 2020 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) (CNG) | 4.9-5.1 kg/100 km |
| Fuel consumption (extra urban) (CNG) | 2.9-3.1 kg/100 km |
| Fuel consumption (combined) (CNG) | 3.7-3.8 kg/100 km |
| CO2 emissions (CNG) | 98-102 g/km |
| Fuel Type | Petrol / CNG |
| Acceleration 0 – 100 km/h | 10.1 sec |
| Acceleration 0 – 62 mph | 10.1 sec |
| Acceleration 0 – 60 mph | 9.6 sec |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 9.7 kg/Hp |
| Weight-to-torque ratio | 6.3 kg/Nm |
| Power (CNG) | 130 Hp @ 5000-6000 rpm |
| Torque (CNG) | 200 Nm @ 1400-4000 rpm |
| Engine layout | Front, Transverse |
| Engine Model/Code | DHFA |
| 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 | 12.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Turbocharger |
| Engine oil capacity | 4.3 l / 4.54 US qt | 3.78 UK qt |
| Coolant | 8 l / 8.45 US qt | 7.04 UK qt |
| Kerb Weight | 1267 kg / 2793.26 lbs |
| Max. weight | 1850 kg / 4078.55 lbs |
| Max load | 583 kg / 1285.29 lbs |
| Trunk (boot) space – minimum | 482 l / 17.02 cu. ft |
| Fuel tank capacity | 9 l / 2.38 US gal | 1.98 UK gal |
| CNG cylinder capacity | 17.7 kg |
| Max. roof load | 75 kg / 165.35 lbs |
| Permitted trailer load with brakes (12%) | 1400 kg / 3086.47 lbs |
| Permitted trailer load without brakes | 670 kg / 1477.1 lbs |
| Permitted towbar download | 80 kg / 176.37 lbs |
| Length | 4549 mm / 179.09 in |
| Width | 1816 mm / 71.5 in |
| Width including mirrors | 1975 mm / 77.76 in |
| Height | 1454 mm / 57.24 in |
| Wheelbase | 2636 mm / 103.78 in |
| Number of gears and type of gearbox | 6 gears, manual transmission |
The SEAT Leon III ST 1.5 TGI represents a practical and efficient option for those seeking a compact station wagon with alternative fuel capabilities. While not available in the US market, it remains a popular choice in Europe, offering a compelling blend of performance, economy, and versatility.
