Application segmentation outlines how Car AV System technology is deployed across vehicle functions, a key focus of Car AV System segmentation studies. Infotainment systems deliver audio, video, and user‑interface services, accounting for roughly 35% of market revenue due to consumer demand for seamless media experiences. Advanced Driver Assistance Systems (ADAS) encompass adaptive cruise control, lane‑keeping, and emergency braking, representing about 30% of the market as regulatory pressure and safety incentives accelerate adoption. Telematics provides fleet management, remote diagnostics, and over‑the‑air updates, contributing an estimated 20% of total sales, driven by commercial vehicle operators seeking operational efficiency. Finally, In‑vehicle Connectivity integrates 5G, V2X communication, and cloud services, covering the remaining 15% and reflecting the nascent but rapidly expanding ecosystem of connected car services. Each application segment adds distinct revenue streams, collectively defining the overall market size and growth trajectory.