The SEAT Leon III, particularly the facelifted version introduced in 2016, represents a significant evolution in the Spanish automaker’s compact hatchback offering. Positioned within the highly competitive C-segment, the Leon aimed to blend practicality, sporty styling, and advanced technology. The 1.4 TGI (110 Hp) CNG DSG variant, produced from 2016 to 2018, is a particularly interesting model, showcasing SEAT’s commitment to alternative fuel technologies and efficient powertrain options. While SEAT is not a major player in the US market, the Leon is a popular vehicle in Europe, competing with models like the Volkswagen Golf, Ford Focus, and Opel Astra.
SEAT Leon III (Facelift 2016) 1.4 TGI CNG: An Overview
The Leon III, launched in 2012, was a pivotal model for SEAT, marking a shift towards a more mature and sophisticated design language. The 2016 facelift brought revised styling, updated technology, and refined engine options. The 1.4 TGI variant distinguishes itself through its bi-fuel capability, running on both gasoline and Compressed Natural Gas (CNG). This allows drivers to benefit from the lower running costs and reduced emissions associated with CNG, while retaining the flexibility of gasoline power when a CNG refueling station is unavailable. The inclusion of a dual-clutch gearbox (DSG) further enhances the driving experience, providing smooth and rapid gear changes.
Engine & Performance
The heart of the Leon 1.4 TGI is a 1.4-liter inline four-cylinder engine, designated CPWA or CZBA. This engine produces 110 horsepower at 4800-6000 rpm and 200 Nm (147.51 lb.-ft.) of torque between 1500-3500 rpm. The engine utilizes direct fuel injection and a turbocharger to optimize performance and efficiency. When running on CNG, the engine delivers comparable power, albeit with slightly altered characteristics. The power-to-weight ratio stands at 11.9 kg/Hp, or 83.8 Hp/tonne, indicating a reasonably sprightly performance. Acceleration from 0 to 100 km/h (0-62 mph) takes 10.9 seconds, while 0-60 mph is achieved in approximately 10.4 seconds. The vehicle boasts a maximum speed of 194 km/h (120.55 mph). Fuel economy is a key strength, with a combined consumption of 5.3 l/100 km (44.4 US mpg) on gasoline and 5.3 kg/100 km when running on CNG. CO2 emissions are correspondingly low, at 121 g/km on gasoline and 94 g/km on CNG, meeting Euro 6 emission standards.
Design & Features
The SEAT Leon III is a five-door hatchback, offering a practical and versatile body style. The facelifted model features a more aggressive front fascia, with redesigned headlights and a larger grille. The interior is well-appointed, with a focus on ergonomics and build quality. The 2016 update included improvements to the infotainment system and the addition of more advanced driver-assistance features. Standard equipment typically includes air conditioning, power windows, central locking, and an audio system. Safety features, crucial in modern vehicles, include ABS (Anti-lock Braking System), electronic stability control, and multiple airbags. The Leon offers a comfortable and spacious cabin for five occupants, with a trunk capacity of 275 liters (9.71 cu. ft.) – adequate for everyday use. The vehicle’s dimensions are 4282 mm (168.58 in.) in length, 1816 mm (71.5 in.) in width, and 1459 mm (57.44 in.) in height.
Technical Specifications
| Brand | Seat |
| Model | Leon |
| Generation | Leon III (facelift 2016) |
| Type (Engine) | 1.4 TGI (110 Hp) CNG DSG |
| Start of production | 2016 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (economy) – combined | 5.3 l/100 km |
| Fuel consumption (economy) – combined (CNG) | 5.3 kg/100 km |
| CO2 emissions | 121 g/km |
| CO2 emissions (CNG) | 94 g/km |
| Fuel Type | Petrol / CNG |
| Acceleration 0 – 100 km/h | 10.9 sec |
| Acceleration 0 – 62 mph | 10.9 sec |
| Acceleration 0 – 60 mph | 10.4 sec |
| Maximum speed | 194 km/h (120.55 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 11.9 kg/Hp |
| Weight-to-torque ratio | 6.6 kg/Nm |
| Power | 110 Hp @ 4800-6000 rpm |
| Torque | 200 Nm @ 1500-3500 rpm (147.51 lb.-ft.) |
| Engine layout | Front, Transverse |
| Engine Model/Code | CPWA, CZBA |
| Engine displacement | 1395 cm3 (85.13 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 74.5 mm (2.93 in.) |
| Piston Stroke | 80 mm (3.15 in.) |
| Compression ratio | 10.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Turbocharger |
| 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 | 1313 kg (2894.67 lbs.) |
| Max. weight | 1870 kg (4122.64 lbs.) |
| Max load | 557 kg (1227.97 lbs.) |
| Trunk (boot) space – minimum | 275 l (9.71 cu. ft.) |
| Fuel tank capacity | 50 l (13.21 US gal | 11 UK gal) |
| Permitted trailer load with brakes (12%) | 1400 kg (3086.47 lbs.) |
| Length | 4282 mm (168.58 in.) |
| Width | 1816 mm (71.5 in.) |
| Height | 1459 mm (57.44 in.) |
| Wheelbase | 2636 mm (103.78 in.) |
| Front track | 1534-1549 mm (60.39 – 60.98 in.) |
| Rear (Back) track | 1508-1520 mm (59.37 – 59.84 in.) |
| Minimum turning circle (turning diameter) | 10.3 m (33.79 ft.) |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 7 gears, automatic transmission DSG |
The SEAT Leon III 1.4 TGI CNG DSG represents a compelling option for drivers seeking an economical and environmentally conscious compact hatchback. Its bi-fuel capability, combined with a refined powertrain and practical design, makes it a noteworthy vehicle within its segment, particularly in European markets where CNG infrastructure is more readily available.
