It's probably obvious that a Mercedes-Benz S550 will be costlier to insure than a Mazda 3, since the former comes with a bigger price tag and potentially bigger repair bills. Still, pricey luxury cars aren't the only vehicles with a steep insurance expense. When setting rates, insurers consider how likely a model is to be involved in a crash, and for various reasons, some models have poorer records than others in this regard. Because of this factor, some bargain-priced cars — like the Mitsubishi Lancer or the Scion tC, for example — can be relatively expensive to insure.
So which sedans come with the lowest insurance premium? The answer is found in the 10 models listed below; these are the 10 sedans with the lowest insurance expense for 2010. Our rankings are based on five-year projections generated by the Edmunds data team. Each model's ranking reflects that of the trim level that's least expensive to insure.

5. 2010 Kia Rio

10. 2010 Honda Civic