With stricter anti pollution measures enforced by the government the HX engine just feels slower and less powerful than the 2 models before it. Other than that, yeah, rust.
Rust in floor panels, sills, doors and around the firewall
Cracks in chassis around firewall
Smoke
Bottom end noise
Transmission failures
Sagging suspension in sedans and wagons due to heavy towing
Carburettor fuel leaks
Warped disc brakes
Collapsing seats
Flat spots in hard acceleration
Power loss in post pollution models