I have spoken to BMW Marshall group in 2 different areas and they have informed me the cash back (£500) is only available on 1/2 series since its only eligible for cars registered by Sept 30 and i4’s will take longer to arrive, also the discounts were not offered on options either therefore some information on here can be misleading. I am not sure how some people have managed to get these discounts as dealerships are not accepting any.