It was Ford that had an interest in Mazda and Volvo.
Mazda-6 morphed into the Fusion, Zephyr, MKZ, Milan, Edge, MKX. Don't like what Mazda did with the 6 over the years. Definitely like what Ford did with that platform.
Mazda diesel won't have a turbo. And, performance will be coming from gearing, and by making the vehicle as lean as possible. Not sure how much torque or horsepower they'll get out of a small 4-cyl non-turbo diesel. Do wish that other automakers step up and compete with VW.
The 323 weighed 2000lbs. The Mazda3 pushes 3000lbs. So, a diesel even with a turbo can be reasonably peppy if they can knock off 500lbs or more from the 3....
I think every vehicle needs to start with a diet.