Both cars are available with petrol and diesel engines. Audi A3 is available also with hybrid engines. Hybrid engines offer superior fuel efficiency and reduced emissions compared to conventional engine types.
Audi A4 petrol engines consumes on average 1.9 litres more fuel per 100 km than Audi A3. On average, Audi A4 equipped with diesel engines consume 0.8 litres more fuel per 100 km than the Audi A3. This comparison does not take engine capacity into account, so to compare the fuel consumption of specific engines, select the car version!
Audi A4 is larger. Audi A4 is 39 cm longer than the Audi A3, 4 cm wider the height of the cars does not differ significantly.
Trunk capacity:
490 litres
380 litres
Trunk max capacity: with rear seats folded down
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1220 litres
Audi A4 has more luggage capacity. Audi A4 has 110 litres more trunk space than the Audi A3.
Turning diameter:
11.4 meters
10.9 meters
The turning circle of the Audi A4 is 0.5 metres more than that of the Audi A3, which means Audi A4 can be harder to manoeuvre in tight streets and parking spaces.
