Petrol direct injection and twin charger
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, at 90
kilowatts or 121 hp per litre of swept volume.