Drive and transmission
Like every plug-in hybrid model, the Audi Q7 TFSI e quattro relies on the power of its two hearts. One of the brand’s most modern engines serves as the combustion engine – the 3.0 TFSI. The turbocharged, refined V6 delivers an output of 250 kW (340 PS) and 450 Nm (331.9 lb-ft) of torque. It is certified according to the Euro 6d-TEMP emission standard and is fitted with a gasoline particulate filter as standard. A permanently excited synchronous motor (PSM), which is characterised by a high power density and compact design, serves as the electric motor. The PSM, which delivers a peak output of 94 kW and 350 Nm (258.1 lb-ft) of torque, is integrated in the housing of the eight-speed tiptronic. Together with the coupling, which connects the combustion engine to the drivetrain, it forms what is known as the hybrid module.
The power for the electric motor is supplied by a liquid-cooled lithium-ion battery that is positioned under the luggage compartment floor and provides an energy capacity of 17.3 kWh at a voltage of 308 volts. Its 168 prismatic cells are divided into 14 modules that lie on top of each other on two levels. The battery cooling system, which also covers the charger, forms a separate low-temperature circuit. If necessary, it can be connected to the coolant circuit for the air conditioning system or the second low-temperature circuit, which cools the electric motor and power electronics. It converts the direct current from the high-voltage battery (HV) into three-phase current to power the electric motor. During recuperation, the electric motor functions as an alternator and feeds direct current back to the lithium-ion battery.
Two power levels
The different designs of the electric motor allow Audi Q7 TFSI e quattro customers to choose between two power levels that differ in terms of their boost strategy, for example. The Q7 60 TFSI e quattro achieves a system output of 335 kW (456 PS) and has a system torque of 700 Nm (516.3 lb-ft) that’s 250 Nm (184.4 lb-ft) more than the TFSI generates alone. When both power units work together in boost mode, it accelerates from 0 to 100 km/h (62.1 mph) in 5.7 seconds and reaches an electronically limited top speed of 240 km/h (155.3 mph). Up to speeds of 135 km/h (83.9 mph) the electric motor can generate the drive alone. The Q7 55 TFSI e quattro delivers 280 kW (381 PS) and a system torque of 600 Nm (442.5 lb-ft). It sprints to 100 km/h (62.1 mph) in 5.9 seconds. The electric motor can also generate the car’s drive alone up to a speed of 135 km/h (83.9 mph), and a speed of 240 km/h (155.3 mph) can be reached in cooperation with the combustion engine.
Predictive operating strategy
The hybrid management of the Audi Q7 TFSI e quattro selects the optimum operating strategy automatically, whether you are driving short or long distances, in the city, on country roads or on the highway. It's designed so drivers are able to cover a large section of their daily journeys on electric power. The “EV” soft key in the lower of the two MMI displays allows them to decide whether and how they want to adjust the interaction of the two power units at any time.The SUV starts in fully electric “EV” mode with a loudspeaker, found in the right wheel arch, emitting a synthetic e-sound to warn pedestrians and cyclists in city traffic. In accordance with the EU guidelines, this acoustic vehicle alerting system (AVAS) can be heard clearly up to 20 km/h (12.4 mph) and gradually fades out as the speed increases. The gasoline engine is activated only when the driver depresses the right-hand pedal, the “active accelerator pedal,” beyond a specific level of resistance. “Hybrid” mode offers two operating modes: “Auto” and “Hold”. In “Auto” mode, the predictive operating strategy is activated automatically when route guidance is started in the standard MMI navigation plus. The battery charge is spread intelligently along the route, with large electric portions in the city and in stop-and-go traffic.
The Audi drive select system
In addition to the “EV” soft key, the driver of the Audi Q7 TFSI e quattro can influence the ride character at a second level: the Audi drive select system. The driver can use the ride profiles “comfort,” “efficiency,” “auto,” “dynamic,” “individual,” “allroad” (with the optional adaptive air suspension) and “offroad” to influence the setup of the drive, air spring suspension and steering. Depending on the settings, the way in which the drives work together changes when the driver depresses the accelerator pedal. In the “dynamic” profile of Audi drive select and in transmission mode “S,” the electric motor supports the 3.0 TFSI with a pronounced boost function for high levels of dynamism and agility. When the foot is taken off the accelerator pedal, freewheeling is blocked in this setting; the electric motor thus recuperates whenever the foot is taken off the right-hand pedal.
The Audi Q7 60 TFSI e quattro delivers a system output of 335 kW (456 PS) and 700 Nm (516.3 lb-ft) of system torque. Its sporty appeal is reinforced by the standard S line exterior with a full paint finish in the body colour and striking design details at the front and rear ends. The look is completed by the black styling package and the Matrix LED headlights. Red brake calipers are installed behind the 20-inch wheels and the adaptive air suspension provides a great range from taut handling to comfortable rolling. The interior of the Q7 60 TFSI e quattro features the interior S line/S line sport package. This includes sport seats with S line embossing, black headlining and aluminium inlays. When the doors are opened, LED lights in the door sills project the four rings onto the ground.