Thanks to its aluminum hybrid construction, the body of the new A7 Sportback weighs some 15 percent less than a comparable body made entirely of steel. This explains the low weight of this large five-door coupe. An unladen A7 Sportback 2.0 TFSI (no driver) weighs a mere 1,655 kilograms (3,648.7 lb), setting a new benchmark in its class.
More than 20 percent of the body is made of aluminum. Lightweight aluminum sections serve as struts in the engine compartment and as cross-members behind the front and rear bumpers. The strut domes at the front end and the mounting bracket for the upper trailing arms are made of die-cast aluminum. Each dome weighs some four kilograms (8.8 lb) less than a comparable steel component. The front fenders, engine hood, long trunk lid, doors and integral member behind the instrument panel all consist of sheet aluminum.
At Audi, the principle of lightweight design means using the right material in the right place to achieve optimum function. The body of the new A7 Sportback therefore incorporates a large number of high-end steels in different strength classes. The strongest of these are hot-shaped steels. A radical increase in temperature during shaping gives them their extremely high strength. They require relatively thin wall thickness and are accordingly lightweight.
Hot-shaped steels constitute a robust backbone for the passenger cell of the new Audi A7 Sportback. Audi also uses tailored blanks in many areas. These are panels of various thicknesses that are thicker and stronger in areas subjected to higher loads.
This vehicle’s body has other strengths as well. It achieves best-in-class figures for static and dynamic torsional rigidity, thus providing the basis for excellent quality of manufacture, sporty and precise handling, and a quiet ride. Hydraulic elements minimize vibrations of the wheel suspensions, rear subframe and engine. Safety films in the windshield and front windows promote superb noise comfort; there are also three sealing strips per door. As an option, Audi will also fit the A7 Sportback with insulating/acoustic glass and tinted privacy windows.
In a frontal collision, the front cross-member distributes the forces to the two side members, which undergo defined deformation to dissipate these forces. The support for the engine and front axle acts as an additional impact buffer by diverting forces in a controlled manner into the strong floor and tunnel structure of the occupant cell. The cell itself provides a high level of protection thanks to the hot-shaped steel components.
In the interior, the Audi adaptive restraint system provides excellent protection through the precisely coordinated interaction of its components and networking with the Audi pre sense safety system. The adaptive restraint system comprises two airbags at the front, two in the backrests of the front seats (and optionally also in the rear), two in the roof frame, the Audi integral head restraint system and the power belt force limiters for the front seats. ISOFIX child-seat anchor points in the rear are also standard.
The base version of the new Audi A7 Sportback achieves a drag coefficient of 0.28 and has a frontal area of 2.29 m2 (24.6 sq ft). Its paneled underbody, which protects the vehicle against moisture and stone impact, results in only negligible aerodynamic drag. Loss of airflow through the engine compartment is also kept to a minimum.
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.