TSI.

Volkswagen unveiled its first petrol direct injection engine with turbocharger in the guise of the 2.0 FSI turbo in the Golf GTI. Volkswagen is now heralding in the second stage of its offensive, with TSI technology: the outcome is a high-tech engine delivering plenty of power and torque, yet with low fuel consumption. The new 1.4 TSI consequently exhibits parallels with TDI technology that go beyond its mere name.

The unique feature of TSI technology, which Volkswagen is the first and only manufacturer in the world to offer, is the combination of petrol direct injection and a twin supercharger. The twincharger, a mechanical supercharger in conjunction with a secondary exhaust turbocharger, boasts one of the best output per litre figures of any production four-cylinder engine in the passenger car sector, at 90 kilowatts or 121 hp per litre of swept volume.

The peak torque of 240 Nm is available from as low an engine speed as 1,750 rpm and is maintained at this high level right up to 4,500 rpm. This figure is equivalent to the potential of a naturally aspirated engine with a displacement of around 2.3 litres. By comparison, the fuel consumption of the 1.4 TSI is nevertheless around 20 percent lower.

TSI technology is available in the new Golf GT, which achieves a notably low fuel consumption of 7.2 litres per 100 kilometres (combined cycle, according to MVEG; CO2 emissions, combined cycle: 173 g/km). A second performance version of the TSI engine developing 103 kW (140 hp) and a peak torque of 220 Newton-metres is now also available for the Touran. Volkswagen furthermore has plans to make TSI technology available in other models, too.