The thread title is buy or lease. So, no, we are not talking about PCP
You are splitting hairs...
But just looking online for a random m3p lease deal. Can only find 4 year ones, not 2 year ones.
So a random 48 month example
4722 (or 9 month) initial rent
525/m
Gives you a total of 29922 over 48 months
That makes the bet that the m3p with no optional extras @ 52,990 today will be worth 23,068 in 4 years. More than 57% depreciation.
So the argument is thus:
1. How much money are you actually saving?
Yes you can invest lets say 47k @ decreasing intervals and make say 1%-2% in an ISA. So that's maybe 2.5k over 4 years if I'm being generous. - you will need the extra 5k for the lease deposit. Also don't forget that the lease company will take that gov grant, thank you very much.
Plus the amount that you think you will save betting against the leasing company, so say model 3 performance sells for 19k after for years, so you saved yourself 4k - if it goes for 19k after 4 years i'll swap my SR+ for it.... Of course it could go the other way and it could sell for more than 23k, say 25k - you just lost that ISA profit.
Then there is the miles.... The above example is 8k miles
2. If not financial, what risk are you actually mitigating? Yes if the car is a complete lemon you can get a replacement, but then there is the warranty over the same time period
3. You don't want the hassle of driving the car for a trade-in or getting a good private sale. Here is the main benefit, the premium lounge of the car world. Drive first class, pay the cash.
And after those 4 years, do you really need a new car again? Yes it might break down a bit more, but it would still be cheaper to run that paying 30k for another lease. So maybe you can keep it another 4 years? Then you are talking EV here, so not really that much to break compared to your average ICE car.
So really it comes down to a lifestyle choice. Would you like to have a new iPhone every year? New car every 2 years? New house every 5 years? etc...
Of course what I don't mention is if you cant get 50k from a bank or otherwise then you probably shouldn't be buying a 50k car in the first place, but then lease is a valid option if you still do.