You want to use the Audi A3 also as a towing vehicle for trailers? In order to answer this topic the car must be considered from all points of view, such as whether a trailer hitch (AHK) is available at all, the torque, and the maximum towing capacity.
The maximum towing capacity of this cars is given as 1400 kg and is thus quite sufficient for the "normal consumer". You can pull a small caravan with it, and also sometimes the moving trailer.
torque affects the Audi A3 how much the trailer load affects acceleration. Torque is available at 350 Nm, which is already a decent value and guarantees that you won't have any problems getting off the mark as a rule.
However, this deal does not yet include trailer coupling and must be separately ordered.
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