Be careful buying a vehicle based on what the websites say. Bath has recently changed its website. A transporter was excepted as free to drive in the clean air zone a few weeks ago, now its not now! And my older T4 caravelle, which has 7 seats, same as many modern estates or SUV's, is classed as a minibus! And my friends T4 original westfalia 4 seater camper van, the same. I except the reasoning from charging large commerical lorries from taking the shortaest route through a town, passing through only, but caravelles and these small VW's are predominantly used by families with kids and no different to estate cars.