From early next year, the Chevrolet MyLink infotainment system in the Spark and Sonic LZT and RS will feature Siri integration.
Once an iPhone has been paired with the MyLink radio, a steering wheel button provides access to Siri.
The system uses 'eyes free' mode so that the iPhone screen remains dark, reducing driver distraction.
In this mode Siri will provide simple answers that can be spoken (eg, sports scores) but not those that require the display of a web page.
"It says a lot about our commitment to small-car customers that Chevrolet has announced that Siri Eyes Free capability will be available in the Spark and Sonic well before the luxury brands," said Cristi Landy, Chevrolet marketing director for small cars.
"Safe, easy, reliable and portable connectivity is a top priority for our customers, and Siri complements MyLink's existing capabilities to help deliver an incredible driving experience."