Typhoon
I guess it depends on your financial situation, what you will be using the car for etc.
personally, I have never bought a new car ( most I have ever spent on a vehicle was $10k Canadian , spent $2000 on the one O drive now....we spent $20k on my wife's used 2010 CRV in 2012). We put lots of miles on and drive our vehicles a long time usually to 200,000 miles. ( my 2004 has 120k miles and the 2010 CRV has 220k miles ) them flip them for few thousand and do it all over again.
A car is a depreciating asset so we don't ever put much out when buying and never take on debt to buy one so my answer is the least expensive.