Look for an old Passat estate (around 2000-2005 although pre 2000 ones are a good bet)
Just make sure you check:-
Turbo is all good,
Gearbox /Clutch is good (wobbly flywheel when idling, not going into gear, high bite point, mushy pedal…that kind of stuff)
All the electrics work (They hold water in the plenum under the windscreen if not cleaned out which leads to water ingress and damaged convenience modules)
Front Suspension bushes are all good.
Mine’s on nearly 190K, 2001 and still drives really nicely. Had it 3 years and it’s passed it’s MOT with no drama each year. You can pick one up for under a grand easy. The pre 2000 ones I think are a bit more robust in the engine department being non PD engines. They’re like tanks
It is luck of the draw but the issues I’ve listed are the main expensive ones