Hyundai and Kia may be related, but even vehicles that both companies develop from similar components end up feeling quite different. The Kia Spectra, for example, shared some running gear with the Hyundai Elantra--but it's rated much lower by TheCarConnection.com's editors. It earns a 6.4 out of 10, and scores lower than the Elantra for its less impressive interior and higher levels of engine noise and vibration. The Spectra will be replaced in 2010 by the new Kia Forte.