It looks like Germany is considering/proposing to change its emissions standards on used cars and test them on the equivalent of a full load going up a hill, if this revision goes ahead then most likely all Euro 5 and prior cars plus many Euro 6 diesels will fail emissions standards, looking at removing upto 8 million cars off the road.
If the revision goes ahead, it seems it may gain further support across Europe and might well finish up here. Its only a matter of time, before the ICE is killed off and force everyone down the EV route. Increases in RFL and charge per mile are only a small selection in the Government's opportunities of getting ICE off the road
I can't for the life of me see that happening. No governing body can force a test for which something was built without that mandate at the time manufacturing, which of course guarantee a fail. Lawyers would have a field day. It would be no different than raising the legal driving age to 25 and then revoking said license from anyone who's already passed but is younger than 25.