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:
163 HP
140 HP
Torque:
340 NM
320 NM
Acceleration 0-100 km/h:
8.3 seconds
9.8 seconds
BMW 3 series is more dynamic to drive. BMW 3 series engine produces 23 HP more power than Audi A4, whereas torque is 20 NM more than Audi A4. Thanks to more power BMW 3 series reaches 100 km/h speed 1.5 seconds faster.
Fuel consumption
Fuel consumption (l/100km):
6.7
5.8
Real fuel consumption:
7.3 l/100km
7.3 l/100km
The Audi A4 is a better choice when it comes to fuel economy. By specification BMW 3 series consumes 0.9 litres more fuel per 100 km than the Audi A4, which means that if you drive 15,000 km in a year, the BMW 3 series could require 135 litres more fuel.
Fuel tank capacity:
61 litres
70 litres
Full fuel tank distance:
910 km in combined cycle
1200 km in combined cycle
1150 km on highway
1480 km on highway
830 km with real consumption
950 km with real consumption
Audi A4 gets more mileage on one fuel tank.
Drive type
Wheel drive type:
Rear wheel drive (RWD)
Front wheel drive (FWD)
Engines
Average engine lifespan:
390'000 km
420'000 km
Engine resource depends largely on regular maintenance and the quality of the oils and fuels used.
Engine production duration:
9 years
5 years
Engine spread:
Used also on BMW 1 sērija
Installed on at least 2 other car models, including Audi A6, Audi A3
In general, the longer and for more car models an engine is produced, the better its serviceability and availability of spare parts.
Dimensions
Length:
4.52 m
4.59 m
Width:
1.82 m
1.77 m
Height:
1.42 m
1.43 m
BMW 3 series is 7 cm shorter than the Audi A4, 5 cm wider, while the height of BMW 3 series is 1 cm lower.
Trunk capacity:
460 litres
460 litres
Trunk max capacity: with rear seats folded down
no data
720 litres
Turning diameter:
11 meters
11.1 meters
The turning circle of the BMW 3 series is 0.1 metres less than that of the Audi A4.
Audi A4 has slightly fewer faults. Deffect rate in annual technical inspection is similar for both cars, it's slightly higher for BMW 3 series, so Audi A4 quality could be a bit better.
