XM Satellite Radio and Acura will offer complimentary satellite-radio service to buyers of some certified pre-owned vehicles, the companies announced Oct. 11.

Acura is offering three months of free service and will waive the activation fee on every factory-installed XM Satellite Radio in pre-owned Acura models. Acura sells more than 35,000 previously-owned vehicles per year, with nearly a third featuring standard XM.