Drivers in Wyoming paid the most in the nation for car repairs at an average cost of $389.18, according to CarMD.com Corp., which analyzed more than 160,000 repairs made on vehicles with "check engine" light problems in 2011.

In Wyoming, home to two of the top 10 most visited national parks; motorists paid 17 percent more than the U.S. average for overall repairs, including 19 percent more for labor and 15 percent more for parts. Drivers in Indiana paid the least at $283.95 per transaction. Rounding out the top five most expensive states for car repair are No. 2 Utah, No. 3 California, No. 4 Montana and No. 5 Arizona. These states are home to half of the nation’s national parks and many popular, yet remote and higher-elevation driving destinations.

CarMD, a provider of automotive information and products, has developed the largest database of "check engine" repairs, and releases this list annually to empower drivers to make educated decisions that maximize vehicle life and minimize repair costs.  The full Index is available at http://corp.carmd.com.