SEAT Leon ST 1.4 TGI

With the SEAT Leon 1.4 TGI, SEAT is impressively reinforcing its claim to the title of technology leader in the field of CNG engines – a role intended for the marque within the Volkswagen Group.  

Enjoying a market share of almost 25 per cent, SEAT’s compact car is the most successful model powered by compressed natural gas (CNG) on the German market. And this is not without good reason: the SEAT Leon 1.4 TGI combines outstanding all-round qualities with an efficient CNG engine that is easy on the environment and the pocket in equal measure.


Whether in the form of the estate known as the ‘Leon ST’ or the classic five-door model, with its low CNG consumption of 3.6 kg per 100 km and CO2 emissions of just 96 g/km, the CNG-powered Seat Leon is one of the most eco-friendly and efficient vehicles on the market fitted with a combustion engine.


On the road, the SEAT ST Leon 1.4 TGI simultaneously demonstrates in impressive style that a vehicle powered by CNG is by no means associated with sacrifice. The bivalent 1.4-litre engine in the SEAT Leon 1.4 TGI, which can use conventional petrol as well as CNG, is capable of 81 kW (110 hp).


The maximum torque for both drive systems is 200 Nm at 1,500 rpm; the top speed is 194 km/h. On a full tank, the CNG alone is sufficient for a range of around 400 kilometres. The fuel is stored in two tanks located beneath the boot, which can hold 15 kilograms of CNG between them.

SEAT Leon 1.4 TGI: fuel consumption, combined: 5.4–5.3 l/100 km (petrol-powered) and 5.4 m³ CNG/100 km (gas-powered); CO2 emissions, combined: 124–123 g/km (petrol-powered) and 96 g/km (gas-powered); CO2 efficiency class: B (petrol-powered) and A+ (gas-powered)


Further information on the official fuel consumption and the official specific CO2 emissions of new cars can be found in the ‘Guide on the fuel economy, CO2 emissions and power consumption of all new passenger car models’ available free of charge at all points of sale in Germany and from DAT Deutsche Automobil Treuhand GmbH, Hellmuth-Hirth-Strasse 1, 73760 Ostfildern-Scharnhausen, Germany (


A vehicle’s fuel consumption and CO2 emissions and deviations from the figures stated do not just depend on how efficiently the vehicle uses the fuel and other factors (such as wheel and tyre choice), but are also influenced by driving behaviour and other non-technical factors.