the most common lantis prob ive heard is wit the rubber door seals.. the lantis has frameless doors (which gives the car a very distinguished character coz not many cars in its class during its time has it), hence the prob.. as wit age, the rubber seals starts 2 worn out n therefore water starts leakin in.. also, had a go in a fren of mine's, n at highway speeds, theres a faint but significant wooshing noise comin from these worn out door seals.. kinda like the noise u get when theres a tiny gap at ur windows when u 4get 2 close em when u start drivin.. i know its a faint sound, but it does get really really annoying after a while..

u could consult the lantis club.. i know it existed (my fren is a member), im juz not sure whether they have a website or a forum..