ok, let's be honest here.
the only thing that matter is the downpayment.

if you can afford to push down the monthly commitment to improve your cashflow, that is a WIN. Whether if the cashflow is for your investment or lifestyle, either way it's fine. You get to enjoy life as you go.

All those saving bit of interest here and there doesn't really matter in the bigger picture unless you're talking about cars that cost more than a regular house.

Because if you're paying so much for your car monthly loan (especially those on 5 years), you might as well buy a house.