If you've played any of the previous games in the DiRT series, forget them. This is a proper rally game, much like the old Colin McRae series - authentic cars, style of racing, handling... Lots of fun.
Now out of early access. Having a lot of fun with this. Good gradual learning curve, though definitely starting to find it a bit tricky to make big improvements now.
The cars make a big difference to the difficulty. Have been playing with hillclimb recently, and initially bought the Peugot 205. Completely uncontrollable. Couldn't make it round a single corner. Changed to the 405, and was in the next championship up three races later.