[Crazy Dazz]

Also Remember that the Mondeo platform is still derived from a shared platform, and must be getting long in the tooth. Back when, that platform (and its derivatives) was shared between Ford, Jaguar, Volvo, and even Land Rover. Plus, going back, it itself was derived from the Mazda platform.
There's only so long you an keep flogging that horse, before you need to develop something new, and predictably the newer platforms are designed around crossovers.

The Mondeo I don't think was ever a massively successful car, and without the American version, there's just not enough demand to warrant the development.

I LIKE the Mondeo, but as far as I can tell, the only buyers are Local Councils, and only the ones that only have a Diesel bowser.

Which is perhaps the other issue. I would only buy a diesel Mondeo, SUPERB economy, and actually a very nice smooth engine and pleasant to drive.
But supposedly Euro makers are getting out of Diesel? (And the yanks think they're Communist.)