Hi there. I am driving a Toyota Avensis 2002 diesel. It has 250,000kms on the clock and I get it serviced every year. It has recently had a new alternator and some body work done. Am I better off at this stage changing for a new model. I was thinking of a second hand Prius as I am a bit low on finance. Also, is it possible to trade in an ex-taxi against a second-hand car? Is that something that garages do? I've never bought a car before and am in bad need of some advice here. Thanks