Car dealer mate of mine says the opposite, due to the fact the garages make so much on introducing the finance.
If you are buying privately, you may have a point.
Test it for yourself. Go to a garage and ask for the best price for cash. Then say, how about if I took your finance? Chances are...
This. If you want to buy and have an asset in 3 years time, buy 2nd hand.
If you want a new car every 2 or 3 years then PCP (or lease if VAT registered)
If you are VAT registered, then leasing often wins as you can claim back 50% of the VAT.
If not, a private PCP may work out cheaper with the possibility of some residual value to use towards the one after.
Leasing has the road tax included, but this is often nil or minimal on a modern...