BMW 3 series is more dynamic to drive. BMW 3 series engine produces 16 HP more power than Audi A4, but torque is 10 NM less than Audi A4. Thanks to more power BMW 3 series reaches 100 km/h speed 0.5 seconds faster.
Fuel consumption
Fuel consumption (l/100km):
7.2
9.3
Real fuel consumption:
11.0 l/100km
11.1 l/100km
The BMW 3 series is a better choice when it comes to fuel economy. By specification BMW 3 series consumes 2.1 litres less fuel per 100 km than the Audi A4, which means that by driving the BMW 3 series over 15,000 km in a year you can save 315 litres of fuel. By comparing actual fuel consumption based on user reports, BMW 3 series consumes 0.1 litres less fuel per 100 km than the Audi A4.
Fuel tank capacity:
63 litres
70 litres
Full fuel tank distance:
870 km in combined cycle
750 km in combined cycle
1120 km on highway
1010 km on highway
570 km with real consumption
630 km with real consumption
Drive type
Wheel drive type:
Rear wheel drive (RWD)
Front wheel drive (FWD)
Engines
Average engine lifespan:
350'000 km
360'000 km
Engine resource depends largely on regular maintenance and the quality of the oils and fuels used.
Engine production duration:
7 years
6 years
Engine spread:
Installed on at least 2 other car models, including BMW 5 sērija, BMW 6 sērija
Used also on Audi A6
In general, the longer and for more car models an engine is produced, the better its serviceability and availability of spare parts. BMW 3 series might be a better choice in this respect.
BMW 3 sērija 2007 3.0 engine: Relatively reliable engine. Most of the problems are related to the fuel injection system, spark plugs and coils, and the Vanos phase control system. Problems with the high-pressure fuel pump were common in ... More about BMW 3 sērija 2007 3.0 engine
Audi A4 2004 3.1 engine: The engine is prone to piston ring sticking and oil consumption, often requiring replacement of the pistons with forged ones. Frequent oil changes can help mitigate this issue, as can occasional high-speed ... More about Audi A4 2004 3.1 engine
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.
