hi, the lexus is 300 is a great car to drive and the fuel economy is not that much different from the is 200. i upgraded recently from a 200 to a is 300 and you notice the difference in terms of performance and all the extra gadgets such as sat nav, electric leather heated seats, triptonic gearbox/ auto gearbox. better sound system with more speakers. The is 300 looks exactly like the is 200 but when you sit insude you notice the difference and especially in the acceleration. insurance aint that bad either. im paying under £500.