i'm looking for any advice on what to look out for when buying a GT?
what model/engine you looking at - JTS/JTD/V6?
V6 is superb. if buying one, then i suggest:
*ensure cambelt is done as required: may differ over there, but here it is '3 years or 60K km's'
*ensure you fit Q2 diff (ignore this and the above at your own peril)
*xenons: worth having if possible
*rear parking sensors: worth having if possible
*check pads/discs for wear and sings of warping on the front (will judder under light braking at low speeds)
*if ride quality isn't ideal for you, then upgrade dampers +/- springs
i would only buy secondhand if the car is in excellent condition with full service history and 'low kilometers'. speak with the service department for an opinion of the car.