I must admit she does look her age and is no race car but she starts every time and has never left me stranded (apart from a snapped throttle cable which was rescued by a large cable tie holding the throttle open all the way home) so I really want to stay with a 406 but maybe a D9.
At the moment I'm averaging around 400 miles to a tank (approx 34mpg) and tax is just over £200 a year, I believe tax is around £125 on a HDI??? and mpg should be around the 50 mark???
Stop me if I'm way off here but by my reckoning I could save 450 to 500 a year on fuel and tax alone. That doesn't include the fact that a D9 would be newer and in theory have less wrong with it

Any thoughts? an idea of what a decent D9 HDI is going for? Not too bothered on spec as my GLX has lots of toys but they don't all work anyway.