The wagon generally has more cargo space due to a larger trunk door opening, a roof that extends as far back as possible, and the ability to convert the rear of the passenger compartment into cargo space. Sedans tend to be quieter than wagons due to a more isolated rear area.
Gearbox:
Automatic
Manual
Engine:
3.2 Petrol
3.0 Petrol
Performance
Power:
260 HP
220 HP
Torque:
330 NM
300 NM
Acceleration 0-100 km/h:
7.7 seconds
7.3 seconds
Audi A8 engine produces 40 HP more power than Audi A4, whereas torque is 30 NM more than Audi A4. Despite the higher power, Audi A8 reaches 100 km/h speed 0.4 seconds later.
Fuel consumption
Fuel consumption (l/100km):
11.0
11.2
Audi A8 consumes 0.2 litres less fuel per 100 km than the Audi A4, which means that by driving the Audi A8 over 15,000 km in a year you can save 30 litres of fuel.
Audi A8 is larger. Audi A8 is 50 cm longer than the Audi A4, 12 cm wider, while the height of Audi A8 is 1 cm higher.
Trunk capacity:
500 litres
442 litres
Audi A8 has more luggage capacity. Audi A8 has 58 litres more trunk space than the Audi A4.
Turning diameter:
12.1 meters
11.1 meters
The turning circle of the Audi A8 is 1 metres more than that of the Audi A4, which means Audi A8 can be harder to manoeuvre in tight streets and parking spaces.
Audi A4 has fewer problems. According to annual technical inspection data Audi A8 has serious deffects in 10 percent more cases than Audi A4, so Audi A4 quality is probably slightly better
