What is it?
This, the new A8, has the greatest capability for autonomous driving of any production car in the world. That, at least, is according to Audi - and
 even then will only apply once the full complement of 40-plus 
driver-assistance systems get rolled out, after deliveries have 
commenced early next year.
The delay stems from the fact that Audi remains at the mercy of the 
differing statutory frameworks of the markets it operates in. But what 
exactly should this comprehensively re-engineered, fourth-generation A8 eventually trim from the job description of chauffeurs the world over?
Audi seems proudest of software it calls Traffic Jam Pilot, which 
allows the driver to relinquish control of this 5.2-metre-long, 
two-tonne saloon at speeds of up to 37mph, as long as there is a 
physical barrier separating both directions of traffic. Other autonomous
 functions will be able to park the car at the touch of a button (even 
if that involves pulling into a garage) and should greatly reduce the 
risk of collision - more on which in a moment.
When the new A8 arrives in UK dealerships in December,
 it will do so with either a turbocharged diesel or petrol V6, making 
282bhp or 225bhp respectively. A twin-turbo 4.0-litre V8 version will 
come in 2018 (availability in the UK to be confirmed), along with a 
443bhp plug-in hybrid and 557bhp W12 to top the range. Quattro 
four-wheel drive is standard, as is an eight-speed torque-converter 
transmission. There’s also a new 48V electrical system – first seen in the SQ7 – that bestows ‘mild hybrid’ status on the A8 and allows for engine-off coasting and extended stop-start capabilities.


