Lightweight construction through and through
A low overall weight is one of the decisive requirements to be met by any car seeking to break through the three-litre fuel consumption barrier.
Audi's technical experts have systematically reduced the weight of numerous components on the three-litre version. Compared with the A2 1.4 TDI, the suspension alone is over 80 kilograms lighter. The subframes, control arms and spring struts are made from aluminium instead of steel. The brake callipers on the front composite disc brakes and the brake drums at the rear are likewise of this lightweight metal.
Lightweight forged aluminium wheels, developed specially with a view to optimising the overall weight, reduce the unsprung masses.
Even inside the car, effective measures have been taken to reduce its weight. The weight of the rear bench seat, for example, was reduced by 19 kilograms by the use of special materials and a sandwich principle. This high-tech process of shedding weight even on the smallest features involved considerable outlay. The reward for all this effort: the weight of the A2 1.2 TDI fell compared with the A2 1.4 TDI by 135 kilograms to 855 kilograms.
The technology for agile road behaviour
The Audi A8 has demonstrated that Audi Space Frame technology provides an ideal basis for outstanding road behaviour. This is because the high structural rigidity of the body acts as a strong backbone for the suspension, thus permitting ultra-precise suspension settings. And the lower vehicle weight means that agile road behaviour can be obtained with a relatively low engine output.
The Audi A2 demonstrates that the high practical utility of a compact vehicle can be combined with maximum driving pleasure and extremely low fuel consumption.
Audi has combined the A2's suspension, which uses the proven technology of McPherson spring struts at the front and a torsion-beam rear axle, with state-of-the-art electronic components. This excellent suspension is complemented by the Electronic Stability Program ESP, a standard feature, which combines the functions of the Anti-lock Braking System ABS with Electronic Brake-force Distribution EBD and Anti-Slip Regulation ASR.
High standards of safety
As on the Audi A8, the ASF principle constitutes the ideal basis for high passive safety. This high-strength frame structure surrounds the occupants like a protective cage. It helps to protect the occupants by reducing impact energy via structural elements that are deformed in a controlled manner.
With two airbags at both the front and sides, front belt pre-tensioners and belt force limiters for all seats, the Audi A2 assures its occupants a high standard of safety, to which the optional SIDEGUARD head airbags add the finishing touch.
SIDEGUARD provides additional protection for the head and neck region of outer passengers in many side or oblique collisions. The airbag covers the side windows and A and B-posts almost completely. The chambers of this curtain-like airbag remain inflated for five seconds after triggering. The head airbag thus also provides protection in subsequent collisions.