Hi, I have been driving a sharan for a few years (I recommend) 1.9 tdi 110 KM AFN made at 145KM, 1-2 times a week to Belgium, France see what's stamped in the proof, maybe 1800, 1900, 2000 kg on the hook. depends on gearbox, capacity.
I had controls a few times, for example on the sharan tow truck - continued, of course, also Sharan - the German said nothing. On the Sharan highway, whether it's a golf or a BMW 5, it is not strange.
A tow truck, its weight, e.g. 500-600 kg plus a car 1450 = around 2000 kg - no one will tell you or do anything, of course it would be appropriate to have a minimum of B + E in the driving license - but this is not in the question.
Ps, in general, from 1996 to 2014, I drove various sets, tow trucks, a tow truck with a turntable, etc. once a few years and a few kilometers I got a ticket of 20 euros for a safety rope, which I did not put on the eyelet due to haste.