A sister model of the BYD Song Pro, the Sealion 05 DM-i is part of the "Sealion" (海狮; Hǎishī) line-up of SUVs under the Ocean Series product line-up that are distributed through Ocean Network dealerships in China.

The BYD Sealion 05 DM-i was introduced and went on sale in September 2024 alongside the updated BYD Song Pro, a Dynasty Series model.

The model is heavily based on the Song Pro sharing the same price and technical specifications.

[4] The Sealion 05 DM-i was updated in February 2025, six months after its initial release.

It received a revised front end design, and an upgraded advanced driver assistance system marketed as God's Eye C and DiPilot 100 that uses 12 cameras, 5 radars,+ 12 ultrasonic sensors, and an Nvidia Orin X chip.