First of all, I think the biggest mistake was to put the name "Dirt" in this game. There's nothing that can be related to what made Dirt games famous among racing fans and this choice left many people disappointed in the Dirt series. We can only hope for a better future for the upcoming Dirt. The TOUR is really, really short. I mean it took me at least twice the time to finish Dirt 2 Tour or Dirt 3 tour. I had no idea they cut so much racing from this game. Not even a 10 Hour long tour, it's a bit embarrassing. While I'm not sure why, I couldn't make a single Challenge but this might be on my end or just bad luck. Servers never were available. Also, after finishing a race if I decided to press "Send Challenge" the game would crash on me. A bit of search in the Steam Community and I can see there were more people with the same issue. Another less good point is about the commentator which is really, really bad. The choice of words are bad, the vocabulary is very limited and the jokes are, well, they are no jokes at all.
However, I still managed to find good things too. The selection of cars are good enough to keep you happy, experimenting several cars while upgrading some of them. The game can look, really, really good. Believe it or not, but I remember when 4K TV's were released on the Market, this game was one of the games for them to show "pretty visuals" on their TV's while having a powerful PC hooked up. You can see this specially when playing at night, in Tokyo which is simply mesmerizing. The lights, the wet floor and the drift really made the game shine during these particular races.
So why did I recommend this game?
If you can find it for the right price -and never pay full price for it- Dirt showdown is a small but safe bet. Again, I recommend playing this game if you get it for a very kind, cheap price. The game is no more than a snack to eat between meals but while it may satisfy you, it will not last longer if you are chasing to fix your racing needs. Here's hoping for a better Dirt in the future more focused on pure Rally events and races.