ULEZ and similar scheme are not about vehicle size. They are about Euro-spec of the engine.

There is a very vocal opposition against those: big recent SUVs are compliant, but small old cars are not, which goes against how people perceive their respective emissions.

In general: - any EV or hybrid is OK - petrol cars are OK if they're not too old (depending on Euro rating of the engine, I also have a 22 yo compliant petrol car, though a car from the same year could be non-compliant if the engine has a lower Euro rating) - diesel cars need to be recent (in general equipped with DPF and other emission-control equipment that's become mandatory to pass more recent Euro-specs)

Sure. Wouldn’t drive an enormous car. I live in the county, would struggle on the narrow lanes with one of those Chelsea tractors. Big cars are only needed in the city.

> Big cars are only needed in the city.

my sarcasm detector is malfunctioning today, but surely that was in jest.

Well they’re certain no good here - scratches, verges, and you want as narrow a car as possible.