A report suggests the limited-production off-road sports car will adopt the "T-Hybrid" system from the new 911 GTS.
The automakers said they're terminating the agreement made last year but will continue to collaborate on software and electrified cars.
A federal document listing planned purchases for 2025 removed Tesla's name on a proposed contract before sidelining the deal altogether.
Kia will reveal three new EVs on February 27, including the EV4 sedan, a concept version of the EV2 hatchback, and a production version of the PV5 van.