First Generation (C4): The original Audi A6 was launched in 1994, replacing the Audi 100.
Engines: Initially available with gasoline engines ranging from 75 kW to 140 kW, and diesel engines up to 70 kW.
Quattro: All-wheel drive system, known as quattro, became an option on certain trim levels of the first generation A6.
Avant Variant: The estate car variant, dubbed Avant, was introduced in 1997, adding a practical and spacious body style to the lineup.
New Generation (C5): In 2002, Audi unveiled the second-generation A6 with updated styling and more advanced technology features.
W12 Model: The A6 W12 model featured a 4.0-liter V12 engine producing 331 kW, making it one of the fastest production cars in its class at that time.
Safety Features: From 2005 onwards, the Audi A6 came equipped with various advanced safety features as standard or optional, such as Electronic Stabilization Program (ESP) and six airbags.
Common Rail Diesel: In 2003, Audi introduced a common rail diesel engine that significantly improved fuel efficiency and reduced emissions in the A6 lineup.
V6 Engine Options: The second generation of the A6 was available with both gasoline and diesel V6 engines, including options for all-wheel drive and manual transmission.
Audi Drive Select: The 2011 update introduced Audi Drive Select, an optional system that allowed drivers to switch between different driving modes (Comfort, Auto, Dynamic) using a rotary control on the center console.
Quattro System Update: For the 2009 model year and onwards, the quattro system became standard across all A6 trim levels in certain markets.
C7 Generation (2011-2018): This generation brought about significant updates to the exterior design, improved infotainment systems, and additional engine options, including a more powerful diesel V6 engine.
Audi MMI System: As of 2012, the A6 featured Audi's Multi Media Interface (MMI) system with a touchscreen display that replaced traditional buttons and knobs for navigation and entertainment controls.
Driver Assistance Systems: The C7 generation introduced various driver assistance systems, such as automatic emergency braking, lane departure warning, and blind spot monitoring, depending on market and trim level.
Audi Drive Select Update: In 2015, Audi updated the A6's drive select system to include a new 'Dynamic' mode with specific calibrations for engine response and transmission shifting based on driving style and terrain.
S Line Trim Levels: The C7 generation A6 offered S line sport trim levels, featuring distinctive styling elements like revised bumpers, side skirts, and exhaust outlets, along with upgraded interior trim.
V10 TDI Engine: Although relatively rare, some European markets saw the introduction of a V10 TDI engine in the 2008 model year A6, producing up to 230 kW from its twin-turbocharged configuration.
D4 Generation (2019-): The current generation of the Audi A6 features an updated design language with sleeker lines and reduced weight due to increased use of aluminum components in the chassis and bodywork.
48V Mild Hybrid System: Starting from 2020, European markets saw the introduction of a mild hybrid system on certain engine variants, which recovers energy during coasting phases and utilizes it to assist the engine under acceleration.
Infotainment Updates: The latest A6 features an evolved MMI infotainment system with updated graphics and functionality, along with integration options for smartphones and other external devices using wireless connectivity.