New car on order, should I wait 'til July 08?

Car Dealers speak with forked tongues!

If you're trading in a pre July 08 2.0tdi, with lowish emissions, you will be told that the trade in value is less than you expect because the new versions are so much cheaper! However, if you go to buy one of the pre July 08 cars secondhand off the dealer, he will tell you they have kept their value well because they are the same to tax as they always were!
No matter what, the delaers will win out.

I expect to see a lot more cars on the roadside with luminous "For Sale" signs on them.

Slim