[Adrian E]

Originally Posted by Architex_mA8tey

good stuff
Source - https://www.gov.uk/government/public...-emission-data

I may have had something to do with some elements of this in my last job - the UK has lagged behind the legislation for years (the default limits in European legislation were always supposed to be a fallback value in the absence of a lower value quoted by the manufacturer) so it's just bringing it in line with what countries like France and Germany have been doing for years in terms of smoke opacity for older vehicles.

Smoke value isn't a perfect proxy for DPF removal - there's middle ground where a clean but DPF deleted car may still pass, and there's dirty with a DPF that can still fail. The vast majority that will now fail will be poorly maintained older diesels that need a set of injectors, or have mega miles and burn oil. Euro 5 with DPF delete will probably have something to worry about as the smoke opacity set by the manufacturer can be VERY low (think 0.15 level). It's usually quoted on a plate either in the door frame or under the bonnet with a number in a square box. Not all manufacturers quote one, though. Citroen don't.

The 2014 date captures the earliest Euro 6/VI vehicles, and handily a chunky number of late registered Euro 5/V. DVLA don't capture Euro status when a vehicle is registered so date of registration is all they can go by