Mining used car data to help you - that's what I feel my primary function is as the guide to used cars for About.com. Data on the most researched used cars can be really helpful.
In an article about the most popular used cars for November 2012, I discover that the tried-and-true Honda Accord tops the list, followed by vehicles like the Toyota Camry, the Toyota Corolla, Honda Civic and the Ford F-150. What I didn't see in the top 5 was sub-compact used cars.
That shows me the American buying public is not snapping up the most fuel-efficient used cars possible. Instead, they're buying smaller vehicles but they're not ready to totally give up comfort.
One trend that scares me is the appearance of the Chevrolet Impala on the list. That's a tricky vehicle, except for the 2011 models, that really needs to be well inspected before purchase.