Don't get hung up on looking for 18" rim that's not the most important you're looking for if you're searching for a space saver (which I presume you are) spare wheel. Since space savers are as the name implies thinner the tyres are a different profile and designed to run at higher inflation pressures and short distances up to 50 mph. Therefore need to get the stud spacing right but there is a lot of leeway on the overall rolling diameter. I would therefore imagine that the Space-Saver for the 2019 Gen 1 ZS EV (not the ICE ZS which has a different hub) would fit and have a close enough rolling diameter, but confirm with your dealer.Want to purchase the above to fit 2022 model with 18 inch diameter wheel.
There used to be on ebay an MG dealer in Norfolk I believe who sold both ZS ICE and ZS EV space-savers at a very reasonable price complete with a car jack and polystyrene incert for the jack. About £125 I believe from memoryThank you for the advice.
Am booked into dealer tomorrow, so will pursue it with them.