Air suspension parts | Air spring Audi A7 Sportback 4G The Audi A7 A7 Sportback is essentially a fast four-door version of the Audi A6 C7 series, based on the Volkswagen Group MLB platform. The A7 was launched before the more conventional A6 sedan / station wagon. Both cars share the same basic structure, drivetrain, chassis, dashboard and interior, while the A7 has its own unique exterior panel. It also differs from the A6 in that it uses aluminum for much of its front body structure. The A7 was also the first fastback to appear in the Audi C-platform series after the Avant version of the C2 Audi 100, which was discontinued in 1982.