Martin,
So it cost you £110-115 in fuel. In an electric vehicle on 920 miles of, admittedly, local motoring could have cost you as little as £25 – or even less, depending on the car, your driving style and energy unit costs (only £12.50 if with Octopus energy supplier!). A long trip like that would cost quite a bit more, mind.
920 miles/month is equivalent to 11000 miles each year – rather more than the average mileage for private motorists, so the fuel savings would be less than £85 a month – say only £70, so an annual fuel saving of £850 – and there would be minimum cost for regular servicing.
We use the 2005 Pogo 607 (150,000miles) when going to Scotland. It returns 45/46mpg – fairly well laden with all the stuff my wife takes (including the dog and its cage). My run-around 1996 Pogo 106 (120,000miles) likely does close to 60mpg (not had it long enough to do a decent check), so only £600 p.a. fuel saving with a BEV (but little fear of needing an oil change, new brake pads, etc for an EV).
I would buy a run-around BEV (or even a new one if I won 50k on the lottery or premium bonds – the 64kWh Hyundai Kona or the 50kWh Peugeot 208 would be the favoured choices, currently) if one came up at the right price. Too expensive at the moment.
There is the risk that the Morris Minor might be fitted with an electric conversion – it would be an interesting project for me. Second hand 5kWh Growatt lithium batteries can be found for about £100/kWh. Not the most powerful conversion, but likely adequate as a run-around….