Audi will launch new petrol-electric plug-in hybrid versions of the A6, A7 Sportback, A8 and Q5 model lines at the Geneva Motor Show, to be badged as TFSI e models. All variants will have an electric range of more than 25 miles according to WLTP, and all models are due during 2019.
A6, A7 Sportback and Q5 TFSI e models will be available in a choice of two configurations with either a comfort or performance orientation and corresponding outputs and equipment packages.
In the future, the “e-tron” label will be reserved exclusively for purely electrically driven cars in the Audi portfolio, while the new expanded range of plug-in hybrids will be identifiable by way of their “TFSI e” badging. Depending on the model series, a choice of two variants with differing performance and equipment will be available: a comfort model (50 TFSI e) and a variant with a higher output and more of a performance focus (55 TFSI e or, for the A8 specifically, 60 TFSI e).
The plug-in hybrid electric vehicles (PHEVs) offer zero-emissions urban driving when in electric-only mode, and freedom from range anxiety when driving long distances.
An electric-only range of more than 25 miles will be possible in each TFSI e model based on WLTP test data.
The fundamental TFSI e concept brings together a turbocharged petrol engine with direct injection and an electric motor that is integrated in the transmission. A lithium-ion battery beneath the luggage compartment floor supplies the electrical energy. As a result, the electric motor can support the combustion engine during acceleration.
The configuration also offers potential for energy harvesting thanks to recuperation technology based on the system used by the new purely electrically driven Audi e-tron. The electric motor can take care of the majority of everyday braking activations involving gentle, gradual deceleration, and under more moderate braking the task is divided between the motor and the hydraulic wheel brakes. Only when braking force exceeds 0.4g do the hydraulic brakes assume sole responsibility for deceleration.
The A8 L 60 TFSI e quattro combines a 3.0-litre, six-cylinder TFSI combustion engine with a permanently excited synchronous electric motor. This is integrated together with the clutch in the eight-speed tiptronic which channels its torque to the quattro permanent all-wheel drive system.
In unison, the two power sources of the Audi A8 L 60 TFSI e quattro provide 330 kW (449 metric horsepower) of system output and 700 Nm of system torque. The A8 is available in standard and extended wheelbase A8 L forms.
The Audi A6 and A7 Sportback models with plug-in hybrid drive use the same powertrain, with a battery capacity that is identical to that of the Audi A8 PHEV, but in these cases a four-cylinder 2.0 TFSI petrol engine linked to a seven-speed S tronic transmission transfers torque to the quattro system with ultra technology. The dual-clutch transmission integrates the electric motor.
Both models are available in two output levels with different boost performance. For the 50 TFSI e, the system output is 220 kW (299 metric horsepower); for the 55 TFSI e, it is as high as 270 kW (367 metric horsepower). Peak system torque is 450 and 500 Nm respectively.The powertrain in the Audi Q5 PHEV follows the same concept as the Audi A6 and A7. The SUV will be available as a 50 TFSI e quattro with 220 kW (299 metric horsepower) system output and as a 55 TFSI e quattro with 270 kW (367 metric horsepower).