In one year, July 2020, 4 Series production starts. The M3 will come shortly after as MY 2021.
- The 4 Series front will show you the front of the M3.
- Go drive an M340i xDrive. That will tell you roughly how it will handle.
- Go drive an X3 M. That will tell you about the engine and drivetrain.
Put all three together - voila.