Beware of the killer deal.

This is the model that exists to get you in the door, but won't be the one you actually want to buy. Consider the Jetta, which has a headline-grabbing base price of $17,515. That's for a model with the 115-horsepower four-cylinder, a motor that wasn't particularly impressive when it was first offered – in the 1993 Jetta. You'll want to spring for the 170-horsepower five-cylinder, the diesel, the turbo, or the hybrid. (A hybrid SEL Premium rings in at $31,975.) So be prepared to negotiate on one of those instead of the base model, which they won't have anyway.