There is a certain amount of devil's advocate in this reply but I think there is reason to empathise with the minimum wage employee on the production line, even if you don't necessarily agree with their rebuttal against the offering.
Its a communication thing..
1. Now that EVs are much much cheaper to a point that there are many EVs under £10k now that are fairly credible and for £13k you get a good ID.3 or similar, and that the company SS Schemes often have good deals on various cars (especially second hand on our one!), these are all accessible to our production staff at the normal monthly figures they spend on their cars now.
2. The saving to an employee is really only ~7.5p/kwh which isn't that much overall, even for high mile commuters (18K Miles PA) that's only ~£30 a month.. if doing 5k Miles commuting that's a whopping £8.22 a month.. it's bugger all..
3. People know there is a push for EVs from the government and understand incentives.. However in our case, its more to just soften the blow to anyone that is venturing into EVs because their is no BIK (yet) on charging in work, when their is, we'll do what we can.
FYI, On our SS Scheme, a 2021 ID.3 58kwh with 10-12k miles is ~£276 a month for a low tax bracket earner, that includes everything, so with fuel savings on top that is quite impressive, quite a few of our production staff are starting to ask more and more and I am always happy to go over figures with them, it is amazing how many buy cars on PCP and in reality are spending over £500 a month on the amortised deposit/finance/insurance/servicing/tyres/maintenance etc..