Timing belt usually needs to be replaced more often than the chain, but it is usually significantly cheaper. Timing belt motors are generally quieter and less vibrating than chain motors.
Performance
Power:
163 HP
180 HP
Torque:
350 NM
380 NM
Acceleration 0-100 km/h:
9 seconds
8.3 seconds
Audi A6 is a more dynamic driving. Audi A4 engine produces 17 HP less power than Audi A6, whereas torque is 30 NM less than Audi A6. Due to the lower power, Audi A4 reaches 100 km/h speed 0.7 seconds later.
Fuel consumption
Fuel consumption (l/100km):
6.9
7.2
Real fuel consumption:
6.9 l/100km
7.7 l/100km
The Audi A4 is a better choice when it comes to fuel economy. By specification Audi A4 consumes 0.3 litres less fuel per 100 km than the Audi A6, which means that by driving the Audi A4 over 15,000 km in a year you can save 45 litres of fuel. By comparing actual fuel consumption based on user reports, Audi A4 consumes 0.8 litres less fuel per 100 km than the Audi A6.
Fuel tank capacity:
70 litres
70 litres
Full fuel tank distance:
1010 km in combined cycle
970 km in combined cycle
1290 km on highway
1250 km on highway
1010 km with real consumption
900 km with real consumption
Engines
Average engine lifespan:
440'000 km
480'000 km
Engine resource depends largely on regular maintenance and the quality of the oils and fuels used, but under equal conditions the average life of a Audi A6 engine could be longer.
Engine production duration:
5 years
4 years
Engine spread:
Installed on at least 2 other car models, including Volkswagen Passat, Skoda Superb
Used also on Audi A4
In general, the longer and for more car models an engine is produced, the better its serviceability and availability of spare parts. Audi A4 might be a better choice in this respect.
Dimensions
Length:
4.59 m
4.93 m
Width:
1.77 m
1.86 m
Height:
1.43 m
1.46 m
Audi A4 is smaller. Audi A4 is 34 cm shorter than the Audi A6, 9 cm narrower, while the height of Audi A4 is 3 cm lower.
Trunk capacity:
442 litres
565 litres
Audi A6 has more luggage space. Audi A4 has 123 litres less trunk space than the Audi A6.
Turning diameter:
11.1 meters
12 meters
The turning circle of the Audi A4 is 0.9 metres less than that of the Audi A6, which means Audi A4 can be easier to manoeuvre in tight streets and parking spaces.
Audi A4 has slightly fewer faults. Deffect rate in annual technical inspection is similar for both cars, it's slightly higher for Audi A6, so Audi A4 quality could be a bit better.
