This new 1.4-liter petrol engine is one of Volkswagen’s latest EA211 series of small engines. This features lightweight aluminum construction, an integrated (into the head) exhaust manifold, and a toothed-belt drive for its double overhead camshaft valvetrain that incorporates variable intake and exhaust timing.
The only aspect to be carried over from the EA111 engine that preceded it is the 82 mm cylinder spacing. The cylinder bore was decreased by 2 mm (to 74.5mm) while the stroke was increased to 80mm, a change which not only helps compactness, but also increases torque and presents an ideal canvas for adding boost (turbocharging or supercharging)—something the engineers at Volkswagen have spent many years perfecting.
The 1.4-liter TSI® engine in the Jetta features a 10.0:1 compression ratio, direct fuel injection, and turbocharging to produce 150hp at 5000 rpm. This engine’s turbocharging system offers incredible boost response thanks to its cleverly designed intake manifold, which enables the use of a surprisingly small, single-scroll compressor. The intercooler, uniquely, is integrated directly into the injection-molded induction pipe. This design generates maximum torque of 250Nm at 1400 rpm.
