The Audi A7 Sport-back is an mid-size luxury car produced by Audi since 2010. A five-door lift-back, it features a fastback-like sloping roofline with a steeply raked rear window and integrated boot lid, and four frameless doors. The A7 is in essence, a five-door hatchback coupe version of the C7-series Audi A6, based on the Volkswagen Group MLB platform. The A7 was released before the more conventional A6 saloon. Both cars share the same core structure, drive-train, chassis, dashboard and interior, whilst the A7 has its own unique exterior panelwork. It also differs from the A6 in that it uses aluminium for much of its front body structure. The vehicle was unveiled in Pinakothek der Moderne art museum in Munich on 26 July 2010, and later in 2010 Paris Motor Show, 2011 New York Auto Show, Worthersee Tour 2011. The 2011 model year A7 introduces FlexRay high speed databus that controls all the driver assistance systems from the A8, but it adds head-up display and active lane assist. Full LED headlamps with Automatic high beam switching or Audi adaptive light (Xenon) with variable headlight range control. The A7 has a 2.0 TFSI V4 engine, seven-speed automatic transmission with D and S driving modes, optional Dynamic all-wheel steering with continuously variable steering boost and ratio, high-gloss black protective grille with honeycomb structure at the front of the car, add-on parts in matte aluminum, power extending spoiler, two elliptical tailpipe trims, a choice of body colours, optional matt aluminum and carbon styling packages, footrest, pedals and soft keys in the standard MMI navigation plus terminal in an aluminum-look finish; decorative trim below the retractable monitor in piano finish, carbon inlays (four optional additional materials), headlining in black cloth (optional lunar silver or black Alcantara), optional power-adjustable comfort seats with memory function, contoured rear seats, xenon headlights, a tire pressure monitoring system, the parking system plus, three-zone automatic air conditioning, cruise control, Audi sound system, MMI navigation plus, adaptive cruise control with stop & go function including Audi pre sense front.