General Motors will offer the same five-year/100,000-mile powertrain warranty on its certified used vehicles that it now offers on its new 2007 models reported, The Chicago Tribune.

The warranty, which goes into effect March 5, will apply to any 2002 to 2006 certified used Buick, Chevrolet, GMC, Pontiac or Oldsmobile. It is transferable to the next owner, and there's no deductible.

Hummer, Cadillac and Saab have six-year/100,000-mile coverage on certified used cars. Saturn's program will be announced soon. Hyundai has also added a 100,000-mile warranty on new cars.

According to GM officials, Toyota and Honda offer seven-year/100,000-mile powertrain protection on their certified used cars. But Toyota's costs $453 with a $50 deductible and Honda's $349 with no deductible. Mercedes-Benz offers the same coverage as GM with no cost or deductible.

Under the GM program, the coverage is based on when the vehicle was first put in service, so that if a consumer buys a two-year-old GM-certified used vehicle with 20,000 miles on it, it would be covered for another three years or 80,000 miles, whichever came first.

The fully transferable powertrain warranty covers more than 900 components related to the engine and transmission and includes 24-hour roadside assistance.

GM is counting on the warranty to boost new-vehicle sales.