The Mercedes burns up 0.2 l less fuel in the combined cycle in relation to the Audi A8 D3 Sedan 4.2 i V8 40V quattro 335HP manual 4x4. The Mercedes, which is classified in „F” class burns up by 1.3 l more amount of fuel than the average in its segment. The average fuel consumption in this class in the combined cycle is 10.2 l.
The Mercedes burns up 2 % less in city traffic than the Audi. The difference in the amount of 2 percent is not significant in daily use of the automobile but in a several months it would allow you to make a real savings.
The boot of the Mercedes S-Class W220 is only 1 liter bigger than the Audi A8 D3. However, the difference is not big it would be right to say that both vehicles have similar trunk space.
The wheelbase of a car is the length between its front and rear wheels. The wheelbase notably affects the driving due to more appropriate vehicle's weight distribution. Mercedes S-Class W220 has 1 percent longer wheelbase distance in relation to Audi A8 D3 Sedan 4.2 i V8 40V quattro 335HP manual 4x4. Wheelbase dimensions are important to the balance and steering. Thus, the mass of Mercedes S-Class W220 should be better distributed and driving should be smoother and safer.
The Mercedes S-Class W220 has by 95 cc bigger engine displacement in relation to the Audi A8 D3 Sedan 4.2 i V8 40V quattro 335HP manual 4x4. This may have a little impact on vehicle's performance, as both figures does not differ much.
If you are a tall driver or you happen to carry in the trunk stuffs of large dimensions, the Mercedes S-Class W220 4.3 V8 (430) 279HP automatic, which is by 2 mm higher than the Audi, would be better pick for you. However, these two cars do not vary much it the aspect of its height and it should not be much noticeable.
Automatic gearbox which is in the Mercedes in spite of having a few minuses gives much more better comfort of driving. After a long time spent at the steering wheel you probably would be more relaxed. Also automatic puts less strain on the engine thanks to the factory settings of changing gears in specific revs range.