The 2013 Audi A8 comes with a supercharged 3.0-liter V6 engine that produces 333 horsepower. An eight-speed automatic transmission and all-wheel drive are standard. A turbocharged 4.0-liter V8 and a 6.3-liter W12 are optional, which produce 420 and 500 horsepower, respectively. The EPA reports that the base A8 gets 18/28 mpg city/highway, which
High specific engine power: 257 kW/350 bhp out of 4.2 litres (15 bhp more than MPI engines) High torque: 440 Nm out of 4.2 litres. Reduction of fuel consumption by approx. 5 % (~360 g/kWh at 2000 rpm and 2 bar) Short and compact design. Modular engine concept based on V6 FSI engine for V8 and V10 FSI (synergy) High idling quality.
We have found the following to be good ways of improving the performance of the EFI 4.2 engine:-. 1: The airflow meter, with its spring loaded sensing flap, is an obvious restriction to flow, amounting to about 12% loss of power according to our own measurements. Ideally from a performance point of view one would dispense with it, but to do soPRICE AS TESTED: $72,466 (base price: $69,946) ENGINE TYPE: DOHC 40-valve V-8, aluminum block and heads, Bosch Motronic ME 7.0 engine-control system with port fuel injection Displacement: 255 cu
.