The Seat Leon III ST (facelift 2016) 1.4 TSI (150 Hp) ACT DSG represents a compelling blend of practicality, performance, and advanced engineering within the highly competitive European compact segment. As a product of Seat, the Spanish arm of the Volkswagen Group, the Leon series has consistently carved out a niche for itself by offering a sportier design aesthetic and more dynamic driving experience compared to its platform siblings, while still delivering the robust engineering and reliability characteristic of the VW family. This particular variant, produced between 2016 and 2018, showcases the refreshed third-generation Leon in its Station Wagon (ST, or Sport Tourer) guise, catering to families and individuals who demand versatility without compromising on engaging driving dynamics. Its powertrain, featuring the sophisticated 1.4-liter TSI engine with Active Cylinder Technology (ACT) mated to a quick-shifting DSG automatic transmission, positions it as a highly efficient and responsive choice for the discerning European motorist.
Driving Dynamics and Efficiency: The Seat Leon III ST (facelift 2016) 1.4 TSI (150 Hp) ACT DSG
The Seat Leon III ST (facelift 2016) 1.4 TSI (150 Hp) ACT DSG was engineered to provide a balanced driving experience, combining agile handling with remarkable fuel efficiency. Seat, known for injecting a dose of Mediterranean passion into its vehicles, ensures that even this family-oriented station wagon retains a degree of sportiness inherent to the brand. The 2016 facelift brought subtle yet effective enhancements to its overall package, solidifying its appeal in a market where both practicality and driving pleasure are highly valued. The vehicle’s architecture, featuring an internal combustion engine driving the front wheels, is optimized for everyday usability and predictable handling characteristics.
A cornerstone of this model’s efficiency is its advanced powertrain. The 1.4-liter TSI engine, delivering 150 horsepower, is paired with Active Cylinder Technology (ACT). This innovative system allows the engine to seamlessly deactivate two of its four cylinders under light load conditions, such as cruising at a steady speed. This intelligent management of engine operation significantly reduces fuel consumption and CO2 emissions without the driver ever noticing the transition, ensuring a smooth and uninterrupted ride. The result is an impressive combined fuel economy of 48 US mpg (4.9 l/100 km) and CO2 emissions of just 116 g/km, placing it firmly within the Euro 6 emission standard category. This makes the Leon ST a highly economical choice for long commutes and family trips alike.
Further enhancing its performance and efficiency is the 7-speed automatic DSG (Direct-Shift Gearbox) transmission. This dual-clutch unit is renowned for its lightning-fast and ultra-smooth gear changes, providing a seamless flow of power to the front wheels. The DSG’s ability to pre-select the next gear ensures there’s virtually no interruption in torque delivery, contributing to both a sporty feel and optimized fuel economy. This combination allows the Leon ST to accelerate from 0 to 60 mph in a brisk 7.8 seconds, with a top speed reaching 133.59 mph (215 km/h), demonstrating that efficiency does not come at the expense of lively performance.
Powertrain Sophistication: Engine and Performance
At the heart of the Seat Leon III ST (facelift 2016) 1.4 TSI (150 Hp) ACT DSG lies a highly refined 1.4-liter TSI (Turbocharged Stratified Injection) gasoline engine, identified by the engine code CZEA. This inline-four cylinder unit, with a displacement of 1395 cubic centimeters (85.13 cu. in.), is a testament to Volkswagen Group’s expertise in developing compact yet powerful and efficient engines. It produces a robust 150 horsepower at a broad rpm range of 5000-6000, ensuring ample power delivery across various driving scenarios. The power per liter stands at an impressive 107.5 Hp/l, highlighting the engine’s advanced design and forced induction capabilities.
Torque delivery is equally impressive, with a peak of 250 Nm (184.39 lb.-ft.) available from a remarkably low 1500 rpm and sustained up to 3500 rpm. This wide torque band is crucial for real-world driving, providing strong acceleration from a standstill and excellent in-gear flexibility, reducing the need for frequent downshifts. The engine’s layout is front, transverse, which is typical for front-wheel-drive compact vehicles, optimizing space and weight distribution. With a compression ratio of 10:1 and direct fuel injection, the engine operates with high thermal efficiency, further contributing to its performance and fuel economy.
The integration of Active Cylinder Technology (ACT) is a standout feature of this engine. When the engine’s power output is not fully required, such as during light throttle applications or highway cruising, the ACT system temporarily closes the intake and exhaust valves of two cylinders (cylinders two and three) and interrupts their ignition. This effectively turns the four-cylinder engine into a two-cylinder unit, significantly reducing pumping losses and improving fuel efficiency. The transition between two and four-cylinder operation is imperceptible to the driver, demonstrating the seamless integration of this complex technology. An intercooler combined with the turbocharger ensures that the incoming air charge remains cool and dense, maximizing power output and efficiency.
The engine features a four-valve per cylinder design, enhancing volumetric efficiency, while its bore of 74.5 mm (2.93 in.) and stroke of 80 mm (3.15 in.) contribute to its responsive nature. The engine oil capacity is 4 liters (4.23 US qt), and the cooling system holds 8 liters (8.45 US qt) of coolant, ensuring optimal operating
