All of this before you even get to ways to pay for it.
Let's be realistic, sometimes you genuinely need a car, and you don't have the cash to hand yet.
Some of the options to fund it can leave you in a hole for years to come, so you have to proceed with care.
The topic is so broad I couldn't even find one expert to cover all the different angles; so for the first time ever, we have two.
On this week's Cooking the Books I first talked to AA motoring adviser Cade Wilson about rules of thumb for finding a good car, how to check safety ratings, and spotting a lying salesman.
I then spoke to Tom Hartmann from the Commission for Financial Capability, about how much you should spend on a car, whether you should use debt, and the best and worst finance options.
For the interviews, listen to the podcast.
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