I played older versions of this, part 5 and 6, but haven't tried this one. I liked the upgrade system, which reminded me about good old days of NFS Underground.
I checked it, it was shut down in March 2019, oh well. I could suggest a similar game called Asphalt 8, you may read a review about it
here. It was released a long time ago, but it's still great and getting patches. The next version is coming soon too.