Iirc the station wagon has a certain letter in its Vin number, no correct letter no Lez excemption.
This is broadly the case, but there are exceptions. Anyone in London wanting a Defender van should use the on line LEZ checker on ex utility company or ex military vehicles. There is no hard and fast rule, but it seems that if they were registered as an Estate you are good to go. I have checked out a good few seemingly identical vehicles. Some go free, some would cost you £100 per day. Go figure.
There seems some sense in making an allowance for higher emissions for a vehicle that carries more passengers, but the above examples of vehicles with 2 seats being exempt suggests we are trying to apply common sense to something pretty arbitrary. Pot luck how the vehicles were originally described and luck of the draw who you contact if trying to change the category now.Bit confused on the rear seat requirement. Surely standard side facing seats would be fine as long as they were individual seats with seat belts and not a bench? Why do they have to be forward facing?