The SEAT Leon III (facelift 2016) 1.5 TGI (130 Hp) DSG is a compact hatchback produced by the Spanish automobile manufacturer SEAT from 2018 to 2020. As part of the third generation of the Leon, this model represents a significant step towards alternative fuel vehicles within the European market. The “TGI” designation indicates a dedicated Compressed Natural Gas (CNG) powertrain, offering a bi-fuel capability – running on both CNG and gasoline. This model was primarily aimed at environmentally conscious consumers in Europe, where CNG infrastructure is more developed, and government incentives often favor lower-emission vehicles. The facelifted Leon III, introduced in 2016, brought styling updates and technological enhancements to the range, including this efficient CNG variant.
SEAT Leon III (Facelift 2016) 1.5 TGI: A Bi-Fuel Hatchback
The Leon III, launched in 2012, was a crucial model for SEAT, representing a move upmarket in terms of design, quality, and technology. The 2016 facelift refined the design further, with revised front and rear styling, updated interior materials, and the introduction of new technology features. The 1.5 TGI variant, introduced in 2018, capitalized on the growing demand for alternative fuel vehicles. It offered a compelling combination of fuel efficiency, reduced emissions, and a familiar driving experience. While not officially sold in the United States, the Leon competes with vehicles like the Volkswagen Golf, Ford Focus, and Opel Astra in the European C-segment hatchback market.
Engine & Performance
The heart of the Leon 1.5 TGI is a 1.5-liter inline four-cylinder turbocharged engine (DHFA engine code) specifically designed to run on Compressed Natural Gas (CNG). This engine produces 130 horsepower at 5000-6000 rpm and 200 Nm (147 lb-ft) of torque between 1400 and 4000 rpm. The engine operates on the Miller cycle, enhancing thermal efficiency. The bi-fuel system allows the vehicle to seamlessly switch between CNG and gasoline, ensuring continued operation even when CNG refueling is unavailable. The gasoline tank has a relatively small capacity (9 liters / 2.38 US gallons) acting as a reserve. Acceleration from 0 to 100 km/h (0-62 mph) takes 9.9 seconds, and 0 to 60 mph is achieved in approximately 9.4 seconds. The engine’s power-to-weight ratio is 9.7 kg/Hp, and the torque-to-weight ratio is 6.3 kg/Nm. The engine meets Euro 6 emission standards, demonstrating SEAT’s commitment to reducing its environmental impact.
Design & Features
The SEAT Leon III (facelift 2016) 1.5 TGI retains the sporty and contemporary design language of the third-generation Leon. As a five-door hatchback, it offers a practical and versatile body style suitable for both urban commuting and longer journeys. The facelift brought subtle but noticeable changes to the front fascia, including redesigned headlights and a revised grille. Inside, the cabin features a driver-focused layout with a modern infotainment system. Key features include ABS (Anti-lock Braking System), electric power steering, and a seven-speed DSG (Direct-Shift Gearbox) automatic transmission. The DSG transmission provides smooth and efficient gear changes, enhancing the driving experience. Safety features were a priority, with the Leon III achieving high scores in Euro NCAP crash tests. The trunk space is 275 liters (9.71 cubic feet) with the rear seats up, providing adequate storage for everyday needs. The vehicle’s kerb weight is 1259 kg (2775.62 lbs), and it has a maximum load capacity of 581 kg (1280.89 lbs).
Technical Specifications
| Brand | Seat |
| Model | Leon |
| Generation | Leon III (facelift 2016) |
| Type (Engine) | 1.5 TGI (130 Hp) DSG |
| Start of production | 2018 |
| End of production | 2020 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) (CNG) | 4.5-4.9 kg/100 km |
| Fuel consumption (extra urban) (CNG) | 2.9-3.1 kg/100 km |
| Fuel consumption (combined) (CNG) | 3.5-3.9 kg/100 km |
| CO2 emissions (CNG) | 95-98 g/km |
| Fuel Type | Petrol / CNG |
| Acceleration 0 – 100 km/h | 9.9 sec |
| Acceleration 0 – 62 mph | 9.9 sec |
| Acceleration 0 – 60 mph | 9.4 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 |
| 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 | 1259 kg / 2775.62 lbs |
| Max. weight | 1840 kg / 4056.51 lbs |
| Max load | 581 kg / 1280.89 lbs |
| Trunk (boot) space – minimum | 275 l / 9.71 cu. ft |
| Fuel tank capacity | 9 l / 2.38 US gal | 1.98 UK gal |
| CNG cylinder capacity | 17.7 kg |
| Length | 4282 mm / 168.58 in |
| Width | 1816 mm / 71.5 in |
| Height | 1459 mm / 57.44 in |
| Wheelbase | 2636 mm / 103.78 in |
| Number of gears and type of gearbox | 7 gears, automatic transmission DSG |
The SEAT Leon III (facelift 2016) 1.5 TGI (130 Hp) DSG represents a practical and environmentally conscious option within the European compact hatchback segment. Its bi-fuel capability, combined with efficient engine technology and a well-appointed interior, made it an appealing choice for drivers seeking to reduce their carbon footprint without compromising on driving pleasure.
