What should I get for my next car?

I’m ready for my next car this summer

I would like to get the 2010 Jetta TDI.

in place of the Mazda 3s. then in seven to ten years that I keep a car my Q. is how

easy is It meaning the jetta for trade in

or do you think I should get the mazda 3s again.but as I said before I am ready to trade my mazda in for the jetta TDI. wiil keep the Jetta for about 7 to 10 yaers then trade again in that time fraim