Can a motorhome with a 190bhp Mercedes-Benz engine be classed as green? Well, yes: Frankia really makes the most of said engine on its Platin models, including the new I 8400 Plus.

That engine is connected to a Büttner MT 1700 Si-K/Sinus inverter, which helps to recharge the two (yes, two) 110Ah lithium batteries. There’s also a heat exchange system for the interior.

There are no fewer than four 110W Büttner solar panels on the roof to keep the batteries charged. Those batteries are lithium, so they can carry on until they are pretty much depleted. They are less likely to have problems in extreme temperatures, and can be charged and recharged many times.

That all means you can spend several days in this ‘van without having to take power from the grid.

The Frankia may have a six-figure price, but it is designed to last, and comes with an 11-year water-ingress guarantee. That has to be good for the planet, too.