The Lion engine, the one used for years by JLR but built by Ford, has apparently ceased production in the UK. I suspect that the one to be fitted to Ranger is to be built overseas, possibly Mexico. It is peculiar that they have bothered really, because it has just ceased to be an option on the US F150 truck. It was only offered for about three years and never sold well where petrol was cheap and the engine option was very expensive.
Apparently the V6 has been very much modified from F150 to suit the ranger according to various press releases issued. And is only available on top spec versions. I would guess it won’t be available in all markets, and neither will the petrol version.
End of the day not everyone wants to use a Ranger to pull a stock box up and down a Welsh mountain, some folks just want a townie truck.