Engine chain usually needs to be replaced less often than the timing belt, but the cost of replacing the chain is usually higher. Chain motors are considered to be more reliable, but noisier and more vibration generating.
Performance
Power:
150 HP
116 HP
Torque:
190 NM
168 NM
Acceleration 0-100 km/h:
12 seconds
13.9 seconds
BMW 5 series is more dynamic to drive. BMW 5 series engine produces 34 HP more power than Audi A6, whereas torque is 22 NM more than Audi A6. Thanks to more power BMW 5 series reaches 100 km/h speed 1.9 seconds faster.
Engine resource depends largely on regular maintenance and the quality of the oils and fuels used.
Engine production duration:
6 years
5 years
Engine spread:
Used only for this car
Installed on at least 2 other car models, including Audi 80, Audi 100
In general, the longer and for more car models an engine is produced, the better its serviceability and availability of spare parts. Audi A6 might be a better choice in this respect.
Dimensions
Length:
4.72 m
4.80 m
Width:
1.75 m
1.78 m
Height:
1.41 m
1.43 m
Both cars are similar in size. BMW 5 series is 8 cm shorter than the Audi A6, 3 cm narrower, while the height of BMW 5 series is 2 cm lower.
Trunk capacity:
460 litres
510 litres
Audi A6 has more luggage space. BMW 5 series has 50 litres less trunk space than the Audi A6.
Turning diameter:
11 meters
11.4 meters
The turning circle of the BMW 5 series is 0.4 metres less than that of the Audi A6, which means BMW 5 series can be easier to manoeuvre in tight streets and parking spaces.
BMW 5 series has fewer problems. According to annual technical inspection data Audi A6 has serious deffects in 15 percent more cases than BMW 5 series, so BMW 5 series quality is probably better
