The hatchback generally has more luggage space thanks to a larger trunk door opening and the ability to convert the rear of the passenger compartment into luggage space. Sedans tend to be quieter than hatchbacks, due to a more isolated rear area.
Audi A3 is more dynamic to drive. Audi A3 engine produces 3 HP less power than Audi A4, but torque is 25 NM more than Audi A4. Despite less power, Audi A3 reaches 100 km/h speed 0.6 seconds faster.
Fuel consumption
Fuel consumption (l/100km):
7.5
8.2
The Audi A3 is a better choice when it comes to fuel economy. Audi A3 consumes 0.7 litres less fuel per 100 km than the Audi A4, which means that by driving the Audi A3 over 15,000 km in a year you can save 105 litres of fuel.
Fuel tank capacity:
55 litres
70 litres
Full fuel tank distance:
730 km in combined cycle
850 km in combined cycle
Audi A4 gets more mileage on one fuel tank.
Engines
Average engine lifespan:
320'000 km
460'000 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 A4 engine could be longer.
Engine production duration:
1 years
5 years
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:
4.29 m
4.59 m
Width:
1.76 m
1.77 m
Height:
1.42 m
1.43 m
Audi A3 is smaller. Audi A3 is 30 cm shorter than the Audi A4, 1 cm narrower, while the height of Audi A3 is 1 cm lower.
Trunk capacity:
370 litres
460 litres
Trunk max capacity: with rear seats folded down
1120 litres
720 litres
Audi A3 has 90 litres less trunk space than the Audi A4. The maximum boot capacity (with all rear seats folded down) is larger in Audi A3 (by 400 litres).
Turning diameter:
10.7 meters
11.1 meters
The turning circle of the Audi A3 is 0.4 metres less than that of the Audi A4, which means Audi A3 can be easier to manoeuvre in tight streets and parking spaces.
Audi A3 has slightly fewer faults. Deffect rate in annual technical inspection is similar for both cars, it's slightly higher for Audi A4, so Audi A3 quality could be a bit better.