Lowest-in-class CO₂ output for new Audi A8

The last word in luxury and the height of efficiency converge in the all-new Audi A8, which makes its world public debut this week at the Design Miami exhibition in Florida, USA. Crafted entirely from lightweight aluminium like its forebears, and bristling with new technology that not only contributes to best-in-class economy and exemplary comfort but also to even greater dynamic accomplishment, the elegant new flagship of the Audi saloon range opens for UK order this month priced from £54,760 OTR.   

Packed inside the even lighter and 24 per cent more rigid evolution of the aluminium Audi Space Frame (ASF) which forms the ‘skeleton’ of the new A8 are myriad new technological advances. These of course include fundamentals such as economy and emissions advantages for the three significantly reworked FSI and TDI engines that will be available from launch – the 3.0-litre V6 TDI with 250PS and 550Nm of torque (up from 233PS and 450Nm), the 4.2-litre V8 TDI with 350PS and 800Nm (up from 326PS and 650Nm) and the 4.2-litre V8 FSI with 372PS and 445Nm (up from 350PS and 440Nm).

The upgraded 4.2-litre FSI benefits from a 13 per cent improvement in fuel economy, taking its combined figure to 29.7mpg and dropping CO₂ output to 219g/km. The equivalent V8 TDI gets a 19 per cent boost to 37.2mpg with CO₂ emissions down to 199g/km, while the 3.0-litre TDI moves to the top of the luxury saloon class in economy terms with a 22 per cent economy hike to 42.8mpg with CO₂ of 174g/km.

During 2010, an even more economy and emissions-focused version of the 3.0-litre TDI unit will be added. Driving the front wheels only, it will combine a 204PS power peak with 47.1mpg economy on the combined cycle and CO₂ emissions of just 159g/km.

All engines are complemented by recuperation technology which provides further fuel and CO₂ savings by recycling a proportion of the wasted kinetic energy which is generated under normal braking and normally dissipated as heat, and storing this temporarily in the vehicle battery to reduce the engine load when the car subsequently accelerates again. The A8 3.0 TDI also saves fuel through its engine start-stop function, cutting engine power at idle when the brake pedal is depressed, and then restarting in just two-tenths of a second when it is released.

The much improved efficiency of these enhanced engines is matched by the new eight-speed tiptronic automatic transmission with which all of them work. With an especially high overall gear ratio of 7.0:1, it reduces overall fuel consumption by around six per cent, but is equally notable for its quick and virtually seamless changes.

New Audi A8 SE Models