Audi is taking the wraps off a new sports car – the Audi TTS, the top of the TT model line. It will be coming to dealer showrooms in the early summer. Under its hood lies a two-liter TFSI high-performance engine delivering a mighty 200 kW (272 hp) at 6000 rpm and a maximum torque of 350 Nm (258.15 lb-ft) is constantly on tap from 2,500 up to 5,000 rpm. This intense power propels the TTS Coupe to 100 km/h (62.14 mph) from a standstill in just 5.2 seconds and on to a governor-limited top speed of 250 km/h (155.34 mph). The Audi TTS is available as both a 2 + 2-seater coupe and as a roadster.
The TFSI engine fitted in the TTS summons its power from a displacement of 1984 cc, and blends two separate Audi technologies – gasoline direct injection and turbocharging – to form a partnership that is perfect for a sports car. It is with good reason that an international jury of motoring journalists has crowned the two-liter four-cylinder power unit "Engine of the Year" three times in succession since 2005.
The Coupe with manual transmission takes just 5.4 seconds to race from zero to 100 km/h (62.14 mph), while a mere 4.4 seconds are required to speed up from 80 to 120 km/h (49.71 to 74.56 mph) in fourth gear. The Roadster is almost as impressive, recording times of 5.6 and 4.6 seconds respectively for the same two exercises. The electronic limiter calls a halt to this outstanding propulsion at a speed of 250 km/h (155.34 mph) in both models.
Compared to the engine it was derived from, the two-liter power unit has undergone extensive reengineering and strengthening to ready it for operation in the TTS – overhauled areas include the engine block, the cylinder head, the pistons, the connecting rods and the turbocharger, which can build up as much as 1.2 bar of relative air pressure. The intake and exhaust systems have undergone elaborate honing to allow the refined four-cylinder engine to both breathe freely and generate a powerful, resonant soundtrack. An optimized and highly efficient intercooler lowers the temperature of the compressed air, producing a crucial increase in the quantity of air supplied for combustion.
The TFSI has impressive fuel consumption of 7.9 liters per 100 km (29.747 mpg) in the Coupe when partnered by the S tronic transmission, and just 8.0 l/100 km (29.375 mpg) in the Roadster. The two-liter engine is extremely light, weighing in at 153 kilograms (337.31 lbs). This has considerable benefits for the overall weight of the TTS as well as for the axle load distribution and, consequently, for the vehicle's handling.
