Sirius Satellite Radio and XM Satellite Radio have expanded their lists of automotive manufacturers that include radios as factory-installed options, the companies announced.

Audi will offer Sirius as standard equipment in eight different models for the 2008 model year, while Mitsubishi Motors North America will offer Sirius in its full 2008 lineup.

XM has been added as a standard feature among the Hyundai, Infiniti and Lexus vehicle lineup.