With the recent introduction of the Jeep Grand Cherokee and Ram 1500 EcoDiesel, as well as the forthcoming debut of diesel versions of the new Chevrolet Colorado and GMC Canyon, there's no question the number of diesel models available to consumers is growing. According to a report released by the Diesel Technology Forum, model availability is one of the key factors in the growth of diesel vehicle registrations in the U.S. It is also the main reason at the national level why hybrids are outpacing diesels in overall registrations and growth in the passenger car and SUV market, although diesel trucks gave diesels a more than two-to-one margin over hybrids in overall registrations.

Findings from the study show some interesting regional and state-by-state data. The two fastest-growing markets for diesel vehicles overall, on a percentage basis, are low-population, but fast-growing North Dakota, followed by the District of Columbia. In terms of the states with the highest overall number of diesel vehicle registrations, Texas led the pack with 837,426, California was Second with 609,212, and Florida was a distant Third with 314,228. Diesel registrations in Texas were more than five times greater than hybrid registrations, which were 153,557 in Texas, whereas hybrid registrations in California were higher than diesels at 698,560. With pickups removed from the equation, California actually had a slightly higher total of diesel cars and SUVs than Texas, 93,654 to 70,311. With diesel trucks broken out separately, Texas once again took First Place with 747,760 registrations to California's 478,847.

The highest growth markets for diesel cars and SUVs were Illinois with an increase of 25.08 percent from 2012 to 2013, Arizona with a 15.56 percent uptick, and California, with an 11.35 percent gain. The fastest growing markets for diesel trucks specifically were North Dakota with a 24.03 percent gain, Vermont at 11.17 percent, and Illinois with 8.62 percent.

Since diesel trucks are overwhelmingly ¾- and 1-ton heavy-duty models often used for industrial applications like construction and petroleum, regional growth patterns can be a barometer of the state's economic health. For the full statistical report on diesel and hybrid vehicle registrations, you can access the report here.

Source: Diesel Technology Forum