2019 Audi A6 55 TFSI Quattro S line – Drive, Interior and Exterior. Color: Suzuka Grey.
As part of the launch in the European markets, Audi offers the new A6 with two powerful, smooth engines – one diesel and one gasoline unit. The gasoline unit is a 3.0 TFSI. The V6 turbocharged engine accelerates the business sedan from 0 to 100 km/h (0 – 62.1 mph) in 5.1 seconds with 250 kW (340 hp) and 500 Nm (368.8 lb-ft) of torque; the electronically limited top speed of 250 km/h (155.3 mph) is a mere technicality. The 3.0 TDI with 210 kW (286 hp) produces similar performance it delivers 620 Nm (457.3 lb-ft) of torque to the crankshaft. While the 3.0 TDI is paired with an eight-speed tiptronic, the 3.0 TFSI is coupled as standard with a seven-speed S tronic. The two engines are equipped as standard with the quattro all-wheel drive, whose design varies depending on the specific setup. In conjunction with the tiptronic it comes with the self-locking center differential; in tandem with the S tronic the setup features even more efficient ultra technology, which always activates the rear-wheel drive instantly whenever needed. All gearshifts are automatic.
In conjunction with the tiptronic transmission the optional sport differential lends the A6 even more dynamic handling by actively distributing the power between the rear wheels. Like the dynamic all-wheel steering, the controlled damping and the adaptive air suspension, it is integrated into the control function of the electronic chassis platform. These systems are closely networked for innovative precision. The driver can select various driving profiles via the Audi drive select system – the wide spread from comfort through sportiness is even more pronounced than in the outgoing model.
The new Audi A6 is noticeably sportier than the outgoing model – thanks especially to innovative solutions for the suspension. The already sporty ratio of the standard progressive steering becomes even more direct as the steering angle increases; a new damping concept also conveys intensive, finally differentiated feedback from the road. The new Audi A6 is maneuverable in town, agile on country roads, and poised and comfortable on the highway.
The dynamic all-wheel steering is a key component in this agility and maneuverability. It combines direct, sporty steering response with unshakable stability, resolving this classic conflict of aims. Depending on the speed, the steering ratio varies between 9.5:1 and 16.5:1. This is thanks to a strain wave gearing at the front. At the rear axle, a spindle drive turns the wheels as much as 5 degrees. At low speed, the wheels steer in the opposite direction to the front wheels, thus enhancing the agility of the A6 and reducing its turning circle by up to 1.1 meters (3.6 ft) to 11.1 meters (36.4 ft). All of which makes maneuvering easy despite the almost five meter (16.4 ft) exterior length of the large Sedan. At high speed the wheels turn in the same direction, thus optimizing stability when traveling in a straight line or changing lanes. Thus the A6 not only offers the driver smooth straight-line stability at high speed. Passengers also enjoy more comfort since the steering movements seem much softer on the rear seats.
The redesigned wheel suspension is also made out of lightweight aluminum in many areas. Despite the larger wheels, measuring up to 21 inches and tire sizes of up to 255/35, than on the outgoing model, the Audi A6 has improved ride and noise comfort. Brakes with fixed calipers made from aluminum are fitted to the front axle. Audi provides a choice of four variants for the suspension setup: the conventional steel spring suspension, the sport suspension, the suspension with damper control, and the adaptive air suspension, also with controlled damping.
All engines in the new A6 come with Audi’s new mild-hybrid technology. Here a belt alternator starter (BAS) works together with a lithium-ion battery. The Audi A6 can coast between 55 and 160 km/h (34.2 and 99.4 mph).
The start-stop function kicks in up to 22 km/h (13.7 mph). The engine is restarted from standstill predictively as soon as the vehicle in front of the Audi A6 starts moving. During deceleration, the BAS recovers up to 12 kW of energy. In real-world driving, the MHEV technology reduces fuel consumption by up to 0.7 liters per 100 kilometers.