Rust, rust oh and err, rust.
Sills and rear arches, boot floor and inner wings.
Chassis at the back end
Wear and play in the steering, axle swivels are difficult to replace compared with D1
Corrosion on the ACE pipes and leaky air bags at the back
play in the steering column
brake problems and rusty callipers
auto clunks and reluctance to change gear, slips when changing up
air conn not working, likewise cruise
leaky sunroofs
can't think of anything else but it's mostly obvious.