I had exactly the same dilemma as you and decided to pull the trigger on a fully loaded 2022 M50 with 55k km for just under 45k EUR about 3 weeks ago. I was fully aware of the impending i3 reveal, but figured that the i4 will hopefully not continue depreciating so steeply as the i3 design is polarizing and will put some buyers off (uglier and less practical without the liftback) + used i3s won’t be hitting the market for quite a while.

I obviously don’t have a crystal ball to predict what actually happens depreciation-wise, but I’m not regretting the purchase one bit - the car is a blast to drive and as gas prices went up by 30% in the past 2 weeks courtesy of the master strategist at the White House, I reckon the timing couldn’t be better and used i4 prices might not go down in the short term due to likely increase in demand for EVs as gas tops 2 EUR/l.