First generation
The production model was launched as a coupe in September 1998, followed by a roadster in August 1999, based on the Volkswagen A platform used for the Volkswagen Golf, Skoda Octavia and others. The TT uses a transversely mounted engine with front or quattro all wheel drive. It was first available with a 1.8 L turbocharged inline four cylinder 20-valve engine.
For the first two years of production, both front wheel drive and quattro models featured a 180 PS (132 kW) version of this engine. In 2001, a more powerful Quattro model was released which was equipped with a 225 PS (165 kW) engine which shares the same basic design but features a larger turbocharger, an additional intercooler on the driver’s side, forged connecting rods, a dual exhaust, and a few other internals designed to accommodate the increase in turbo boost from roughly 10 psi peak to 15.
All TT models were recalled in late 1999/early 2000 following concerns over the car’s handling which was considered unstable under high-speed cornering as the result of throttle lift-off oversteer – a number of modifications were made, which were subsequently incorporated into all future examples: rear-wing spoilers were fitted (to reduce lift) and suspension settings were altered (to increase understeer). The original four cylinder engine range was complemented with a 250 PS (184 kW) 3.2 L VR6 in early 2003, which comes with the quattro all-wheel drive system. In October 2004 a new DSG (dual-clutch) gearbox, which improves acceleration through drastically reduced shift time, was offered along with a stiffer suspension.
Audi has developed the TT with some notable improvements, including a lightened and power-boosted “quattro Sport” model, and 240 PS (176 kW) and a top speed of 250 km/h (155 mph), however the handling and steering are considered by many (including BBC’s Top Gear presenter, Jeremy Clarkson), to be “boring”. It compares with the Nissan 350Z which has more grip. It should be noted, however, that the TT’s handling character is deliberate, as Audi vehicles are generally designed to exhibit understeer (a characteristic determined by suspension design, the effect of the quattro all-wheel drive system, and other factors). Understeer is inherently a safer handling characteristic, as it is easier for novice and casual drivers to predict and control the vehicle (and thus the car can appeal to a much broader market). Sports car purists and driving enthusiasts,however, generally favor power oversteer (which the Nissan 350Z exhibits) to understeer, as the former makes for a more involving and spirited driving experience.
