In all honesty, since working in my new job, commuting 90mins plus each way, sorting the house out etc etc I have found that I really wanted to simplify my life as I am starting to struggle to keep all the balls in the air and it has started to affect the quality of my work/decision making. Changing to an EV seemed a pretty cost-neutral way to take some work/stress out of my life. I realise admitting any kind of mental weakness or ineptitude is not popular in these parts and will likely get me (re)branded a nambi pambi millenial snowflake, but there we are. Another way to look at it is I can only concentrate on so many things at any one time and I've decided having to repair my daily driver doesn't need to be one of them.
Oh agree, I'd have something newer, as I know myself, time to tinker is rare. I'd try it for a while though, see if it worked as long as the banger worked and passed an MOT.
On the banger thing, while it doesn't address my above point, you also have
to want to do it I think. 28k p.a. @35mpg is £4575 p.a. in fuel alone, insurance of say £500, tax of say £300 is £447 pcm so savings will be minimal and I would argue that anything "interesting" is going to return nearer 26-28 mpg rather than 35.
I realise I'm in an uncommon position in that I have access to a pretty sweet lease deal, and 60% of my fuel will be free (or 90% once we move), but then I'm not saying the car would suit everyone, just that I think it will suit me.
Our test track guys recon the are good for about 150 miles but a bit on the slow side for an EV
I'm expecting similar overall performance to the Ovlov, but delivered in a different way. 0-45 the VW will cream the swede, at motorway speeds I'm expecting limited overtaking shove. But then again, my current 1.2l rollerskate is more than man enough to my daily 60-70mpg slog

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On the battery degredation front, I am genuinely curious as I think mine will rapidly become one of the highest mileage e-golfs around (I will never understand why people run ev's for 3-5k p.a. - buy a sodding V8!). My figuring is that I can "manage" with 60% of the starting capacity if I have to and I believe it massively unlikely I will lose 40% capacity in 3yrs/75k and that if I do I'd be able to make the case that the car is not fit for purpose and throw it back early.