The self-locking center differential of the quattro permanent all-wheel drive is integrated into the housing of the eight-speed tiptronic. Lightweight and compact, its optimized locking range provides for excellent traction and handling characteristics. Under normal driving conditions, the center differential distributes the power between the front and rear axle in a 40:60 ratio.
If the wheels of one axle lose traction, the purely mechanical component can redistribute the power with no delay – up to 70 percent to the front and a maximum of 85 percent to the rear. The self-locking center differential works closely with the wheel-selective torque control. During fast cornering, the control software uses finely modulated interventions to brake the inside wheels, which are under a reduced load. This makes the SUV’s self-steering behavior even more agile and precise, and the grip even better.
Sporty agility and top comfort: the chassis
The Q7 e-tron quattro handles highway runs comfortably and with aplomb. It masters winding interurban roads with precision and agility. Compared with the previous generation of the Q7, its center of gravity has been lowered by 50 millimeters (2.0 in), in part due to the lower installed position of the engine.
The SUV’s chassis is over 100 kilograms (220.5 lb) lighter, with the axles alone accounting for 60 kilograms (132.3 lb). Redesigned five-link constructions of aluminum and high-strength steel guide the wheels front and rear.
The pivot bearings are forged aluminum; the propshafts of the front axle are hollow. The elastomer bearings and the separate springs and dampers at the rear axle respond extremely sensitively.
Audi offers the adaptive air suspension – a pneumatic suspension with adjustable damping – as an option. It is managed via a newly developed chassis control unit that controls all the body control systems in the Audi Q7 e-tron quattro. The system varies the body’s ride height depending on the situation. On the highway, the body is lowered by as much as 30 millimeters (1.2 in), which improves stability and the flow of air around the car. When driving slowly off-road, ground clearance increases by up to 60 millimeters (2.4 in). Sports suspension is also available as an option.
The electromechanical power steering is very efficient. It provides a direct, precise steering feel and works closely with several driver assistance systems. Its servo boost adapts to the driving speed.
A central control unit called ECP (Electronic Chassis Platform), which governs all body control systems, regulates the operation of the shock absorbers within milliseconds for each wheel individually, for example. Electromagnetically actuated valves inside vary the flow of hydraulic fluid – this concept allows an especially large spread between sporty and comfortable rolling. The position of the car relative to the horizon in the lateral and longitudinal directions is computed in the ECP and shown on a display in the MMI.
Up to seven modes: Audi drive select dynamic handling system
Audi drive select, the standard dynamic handling system, incorporates multiple technical components, including the eight-speed tiptronic, electromechanical power steering, the engine characteristic and the engine sound of the 3.0 TDI. It also controls the optional adaptive air suspension. If the car is equipped with the air suspension, Audi drive select offers seven modes: efficiency, comfort, auto, dynamic, individual, allroad and lift/offroad.
The Q7 e-tron quattro comes from the factory equipped with standard 19- or optional 20‑inch wheels with an e-tron specific design and 255/55‑series tires. Audi also offers 21‑inch wheels.
Large, internally ventilated discs with a diameter of 400 millimeters (15.7 in) up front stop the SUV safely and reliably. They are gripped by six-piston aluminum calipers. The electromechanical parking brake features convenient hill hold and startup functions.
Off-road, the Audi Q7 e-tron quattro benefits from its high ground clearance (up to 245 millimeters (9.6 in)) and the greatest possible axle twist. An optional display presents the pitch and body roll angle; standard electronic hill descent control maintains the desired speed. An off-road mode for the electronic stabilization control ESC is also standard.
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.