A little background research into a particular models strengths and weaknesses can often help........ like discovering that, for instance, the early 1.6 and 1.8 vvt-i engines have a potentially serious oil usage problem if they haven't been serviced with regular oil changes and the specified oil for that engine. An hour or two on google can give you a real insight into what to look out for with the particular car you're going to see. Beyond that Konrad is right, condition,history and paperwork are what counts over mileage every time I have a 1ZZ-FE and not afraid to use it :)