if you’re only going to buy via PCP (or lease or another form of monthly payment where you can choose to simply hand back the car at the end of the term) then you dont really need the cash price, just make sure the duration of the pcp is the same for each car you’re looking at, Then for each deal take the deposit and add it to the monthly payment multiplied by the number of months, to work out the total cost of owning the car for the PCP period on the basis you give it back at the end.
If you think you might buy the car at the end of the period , then thats where the cash amount will be useful for comparison purposes, ie add the deposit to the monthly amount multiplied by the number of months of PCP, and add the final payment amount, and compare this to the cash price of the car, that will tell you how much extra your paying to have a monthly payment plan and effectively borrow the cash.
PCP can be considered a little like having a capital repayment mortgage and an interest only mortgage at the same time.
Arbitrary example, but its how its works : If the cash price of the car is £30000, and you put down £2000 deposit, and the dealer says that in 3 years, you can either buy the car outright for £10000 or simply hand it back with nothing more to pay, at say 5% apr, the following applies.
Total credit £28000 (£30000 minus £2000 deposit)
Interest only credit £10000 (the final payment)
Capital repayment credit £18000.
The monthly payments will be £581.15, made up of :-
Interest payments on £10000 (the interest only bit) = £41.67 per month at 5% apr
Capital Repayments plus interest on £18000 over 36 months = £539.48 at 5% apr
Total per month = £581.15 for 3 years, plus a final payment of £10000 or give the car back.
So if you give the car back after 3 years, it will have cost you £22921.40 over 3 years.