I’ve got my head around all the figures now thankfully. The start point is pence per mile, which we all can work out easily by adding the charge cost to the petrol cost and dividing by miles driven.
For me, the meaningful thing is then to divide that pence per mile into the cost of a gallon of petrol to work out what the mpg would have been had we spent the cost of the charging on extra petrol. That then gives a perfectly accurate comparison of running a PHEV versus an ICE in mpg terms, which I think most people understand more than pence per mile. Oscarmax is working out the running costs accurately including charging costs, but most PHEV owners on this forum don’t and purely quote the mpg as stated on the fuel computer, which is a totally false impression as it takes no account of charging costs. Fine if they are happy with that, but I want a true like-for-like comparison as that’s just me 😂
As for the owners manual, I’ve been out most of today having beers and lunch with some mates, but I made a good start last night and am about 15-20% in to the thick manual with one page of notes made to play with in the car. I have more time over the next few days. I need to get through it, as he’s also given me the infotainment manual, but that’s a lightweight by comparison at just under 200 pages 🤣