Finance or capital to purchase 2nd hand car?

izzy

I've probably missed the point of this website but everyone keeps telling me I should use other people's money instead of my own. However I can't see how it makes sense to borrow at a higher rate than the interest you'd lose buying with your own capital. Currently in the process of buying a BMW - they have their own finance package - BMW Select. I can buy this car outright out of my own capital - do I do this and lose possible interest or use their finance package which means I don't actually own the car in the end - although depreciation means it won't be worth much then anyway? pros and cons please. Actually I'd like to use my credit card and get the airmiles (and of course pay it off in full). Has anyone any better ideas?