I drive 2001 IS300 and according to my friend, a Lexus mechanic, this is one of the most reliable car Lexus made that year. So far the car been very reliable (keeping my fingers crossed) and the only thing I have to do is the maintenance, which is more expensive then Toyota/Honda for same similar parts. If you going to get a used IS, then get a IS350, not IS250. The same mechanic says the IS350 is more reliable as he sees the IS250 more often at the shop. This might not be a fair assessment because there are IS250 out of the road than the IS350….