I just picked up an is300 three weeks ago here in Victoria too. Where are you getting yours?
I can tell you a few things to have the service inspector look for in detail, or you can ask who ever you are buying it from if the following has been done:
- timing belt, water pump, and seals at the front of the engine.
- spark plugs and valve cover gaskets should be done.
- front suspension refresh. The lower control/castor arm
bushings only last about 5 years, allowing excessive toe out and massive
inner tire wear and shudder under braking. Ask if these were done.
- also check ball joints, upper and lower, there was an
issue some people were having causing their lower ball joints to let go while driving.
- also have them check the radiator and hoses