Kia and Hyundai's Theta engines have been around for a while, but they're not without problems. Here are some of the most common issues facing these engines.

View post: Thunderstorm Warning: 75 MPH Gusts, Large Hail to Slam Central US, I-29 to I-70 When Hyundai’s all new Sonata goes on sale early in 2010, it will arrive in U.S. showrooms with only one ...

A 2.0-liter Theta II engine in a Kia Sportage - P199/Wikimedia Commons The launch of Hyundai's first Theta engine in the 2004 Sonata helped signify that the Korean automaker was moving beyond its 20th ...