If you are considering this car you might want to have a quick look at these reported issues with the MG4 https://www.mgevs.com/threads/mg4-reduction-gearbox-oil-leak.7641/ Only a small sample admitedly but 47.5% of owners are reporting the leak. https://www.mgevs.com/threads/mg4-oil-leak-poll.7786/ and another issue: https://www.mgevs.com/threads/mg4-undertray-dip-bulge.7796/
MG reliability and their dealerships are questionable as highlighted on this and many other forums.
Unfortunately I have suffered a brain injury and occasionally I get confused and often say the wrong thing.