The A5 Sportback is 4.71 meters (15.45 ft) long; the Coupé and the Cabriolet 4.63 meters (15.19 ft). All models are 1.85 meters [6.07 ft] wide; their height ranges from 1.37 meters (4.49 ft) for the Coupé to 1.39 meters (4.56 ft) for the Sportback. The basic version of the A5 Coupé has a frontal area of 2.17 m2 (23.36 sq ft) and the vehicle’s drag coefficient is just 0.29 – thanks to extensive, sophisticated tweaking and an underbody covered completely with panels.
On all three models, the vehicle bodies integrate a number of high-strength and ultra-high-strength steel panels which – in turn – reduce the car’s weight while enhancing its rigidity, vibrational comfort and overall safety. The front fenders are made of aluminum for improved axial load distribution. An empty A5 Coupé 1.8 TFSI (no driver) weighs a mere 1,425 kg (3,141.59 lb).
In the core of the passenger compartment – at the center tunnel, B-posts, inner sills and bulkhead transverse member – hot-formed steel units constitute a robust array. Their exceptional tensile strength is the result of the metal sheets undergoing a special type of heat treatment. Additional reinforcement components for the A5 Cabriolet offset its lack of a hardtop. A new front-end capsule made of aluminum, for instance, further refines vibrational comfort.
A special structural adhesive is used extensively during assembly of the body to further bolster the strength of joints. In the doors and at the sills, another high-end technology is used: remote laser welding. A nearly invisible zero-gap joint unites the side panels with the roof. This joint created via intricate plasma brazing illustrates the great precision with which Audi produces its vehicles.
An array of precisely arranged metal sections with defined deformation properties will protect passengers in an accident. Both front airbags acknowledge the precise positions of the driver and front-seat passenger to provide excellent protection for passengers of all sizes. In addition, there are side airbags in the front and – optionally in the A5 Sportback – in the rear, as well. Last but not least, a head airbag system also stands at the ready. In lieu of that, the A5 Cabriolet features head-and-thorax side airbags in the front, complemented by a special system: If a roll-over accident is imminent, then sturdy aluminum plates behind the rear head restraints will instantaneously thrust upward.
An integral head-restraint system is standard for all models. It diminishes the risk of whiplash in the event of a rear-end collision by supporting the upper body parts and heads of front-seat passengers. And the seatbelt tensioners ensure that passengers remain safely seated during a severe rear-end collision. ISOFIX child-seat anchors are standard for the rear seats and optionally available for the front-passenger seat.
All three body versions in the A5 family offer generous cargo capacities. The Coupé features a base capacity of 455 liters (16.07 cubic ft); for the Cabriolet, it is 380 liters (13.42 cubic ft) with the top closed and 320 liters (11.30 cubic ft) with the top open; for the Sportback, it is 480 liters (16.95 cubic ft). It is standard in all models that the rear seat backs can be folded down separately; doing so in the A5 Sportback increases cargo capacity to as much as 1,263 liters (44.60 cubic ft). The trunk lid of the A5 Coupé opens automatically.
Fastening rings are standard equipment in all models. Audi also offers nets, retaining hooks and a load-through hatch (not in the Cabriolet). Last but not least, there is a wide selection of accessories such as special carriers, holders and transport boxes.
The equipment and data specified in this document refer to the model range offered in Germany. Subject to change without notice; errors and omissions excepted.