With oil costs shattering records and gasoline prices causing concerns nationwide, savvy American consumers are increasingly turning to diesel-powered vehicles as a fuel-sipping alternative to gasoline, according to new research released today by the Diesel Technology Forum (DTF). The driving force behind this leap is that diesel engines are 20 to 40 percent more fuel-efficient than comparable gasoline-powered engines without requiring consumers to sacrifice power or performance.

Data compiled by R.L. Polk & Co. show that registration of diesel passenger vehicles in the U.S. -- including cars, trucks and SUVs -- has grown a remarkable 80 percent since 2000, up from 301,000 diesel vehicles that year to 543,777 diesel registrations in 2005. For the all-important light-duty market, diesel registrations nearly doubled (95 percent growth) from 2000- 2005, with 31 percent growth coming in 2005 alone. When given a choice between a gasoline or diesel engine, consumers purchased the diesel engine option almost half the time (45 percent) in 2005.

Most analysts expect the diesel trend to continue due in part to rising fuel prices and the desire to improve U.S. vehicle efficiency. Researchers at J.D. Power and Associates predict that diesel sales will approximately triple in the next 10 years, accounting for more than 10 percent of U.S. vehicle sales by 2015 -- up from 3.6 percent in 2005.