The first generation S3 is built on the same A platform of the Audi A3.
The inline four 20v 1.8 L turbocharged petrol engine comes in two versions of power output: 210 PS (154 kW; 207 hp) and 225 PS (165 kW; 222 hp). Early models (1999–2001) had 210 PS (154 kW; 207 hp) which is said to be a de-tuned Audi TT engine, and was said to be reduced to lessen brand competition with the more powerful TT. The engine provides a maximum 280 N·m of torque, most of which is available from 2200 through to 5500 rpm. This is the first time a small four-cylinder engine has been used in an Audi S-series car.
Although dubbed "quattro", the S3 uses a different "on-demand" four-wheel drive system. The Haldex Traction coupling adjusts the bias of torque distribution from the front to rear axle as grip requirements change - most of the time it operates as a front-wheel drive.
Standard features include xenon HID headlamps with high pressure washers and auto levelers, front fog lamps, 17" "Avus" alloy wheels with 225/45R17 tyres, electrically adjustable Recaro leather seats, climate control, alarm and Electronic Stability Programme (ESP) with traction control (ASR).
Options include a Bose sound system, boot/trunk or in-dash mounted 6 disc CD changer, metallic paint, 18 inch 9-spoke RSTT wheels, glass sunroof, centre arm rest, privacy glass (B-pillar backwards), auto dipping rear view mirror, parking assist, luggage net, heated front seats, cruise control, aluminium door mirror casings and part leather/alcantara combination seat coverings.
Source: Wikipedia, 2011