Only 28 of these cars will be available for the South African market which will ensure that this final, high performance incarnation of the TT will become a much sought after machine.
The TT Sport embodies a purist approach combined with stunning looks and exceptional performance, more output and less weight.
The engine and transmission have undergone extensive changes.
The 1.8-litre turbo unit now delivers 176 kW up from 162 kW of the standard TT.
In addition, torque is rated at 320 Nm, an increase of 20 Nm, produced lower down the rev range from 2 300 to 5 000 r/min.
As a result Audi says the TT quattro sport accelerates at sea level from 0 to 100 km/h in 5.9 seconds and achieves an electronically limited top speed of 250 km/h.
Extensive technical measures have been taken in response to the engine's gain in output.
The transmission casing for the four-cylinder engine houses the ring gear of the six-speed gearbox adopted from the top-of-the-range TT 3.2 quattro manual not sold in South Africa.
The bodyshell is the same as that of the 1.8T except for the rear floor, which has likewise been adopted from the TT 3.2. This has made it possible to switch the battery to the rear to optimise weight distribution.
The rear seat bench seat has been completely removed, instead of which there are now a transverse brace and a net partition for securing items of luggage.
Audi has replaced the standard sports seats with Recaro racing bucket seats, and is also possible for customers to retro fit a racing harness.
Compared with a normal TT 1.8T (165 kW), the TT quattro Sport has shed an impressive 75 kg bringing it down to 1 390 kg.
The striking two-colour finish is the most immediate evidence that it is different. The roof is painted in Phantom Black pearl effect, and the body is available in the pearl effect colours Avus Silver, Misano Red, Mauritius Blue, Silver or Phantom Black.
The colours of the vehicle body are also echoed by the backs of the bucket seats. The two-colour paint finish is the most striking visual change, but many other details distinguish the TT quattro sport from other TT models.
The S line exterior package with its special bumpers and modified side sills accentuates its performance appeal.
At the rear, the diffuser trim with its two black tailpipes is a particularly noticeable feature.
In keeping with the two-colour theme the air inlets at the front, the exterior mirror housings and the rear spoiler and diffuser are in a contrasting colour.
The TT comes with large 18-inch wheels as standard. The newly designed cast aluminium wheels of 15-spoke design provide a glimpse of the red brake calipers. The wheels are fitted with 235/40 R 18 tyres.
Exclusive materials dominate the interior. The steering wheel, handbrake and gear lever knob are trimmed in Alcantara, to match the Alcantara/leather seat upholstery.
The standard equipment includes xenon headlights and the luggage net.
All South African destined TT quattro Sport models have climate control air-conditioning as standard.
The standard features can be extended by such items as Bose sound or the navigation system option
The Audi TT quattro sport, which is built by quattro GmbH, carries a price tag of R380 000 including a five-year or 100 000 km Freeway maintenance plan.