The overriding sentiment here being somewhat more negative. It's definitely confirmed my plan to buy Forza Horizon 2 first, and get to Forza 6 later, likely after a heavy price drop.
Don't get me wrong it's a decent racing game, graphics and physics are good (although a lot of the cars are way too oversteery), sounds are good, I enjoy playing it.
But it's just not really much of a leap over 5, maybe if the career was a bit more interesting, the AI a bit (alot) better, and it had dynamic weather and TOD it would be a bit more of a worthy step in the franchise.