Passat 4Motion TDI is 2500kg braked a la handbook.
It's basically an A6, but in a Burton suit. Mostly chosen for its ability as a tow vehicle.
T4 is 2000kg braked.
I would have thought with fat blokes, fuel and tools etc you'll be over and if you're over, you're over - can't argue it in court, you just have to bend over.