Recent advancements in Human-Machine Interfaces (HMIs) have transformed in vehicle experiences through visual displays and infotainment systems. While these technologies enhance usability, they often exclude users with visual impairments by prioritizing sighted interaction models. Current HMI design guidelines rarely account for the needs of elderly or disabled individuals. This paper presents a critical review of literature on HMIs with a specific focus on visual accessibility. It highlights the persistent challenges faced by blind and low-vision users, identifies gaps in current design practices, and outlines strategies for more inclusive interfaces. Visual-centric systems remain inherently inaccessible to those with reduced acuity or contrast sensitivity. Despite the promise of autonomous vehicles (AVs) to expand independent mobility, their interfaces often replicate the same exclusions found in conventional vehicles. Multimodal feedback—integrating audio and haptics with visual cues—remains uncommon, despite being essential for equitable interaction. Voice inter- faces, tactile prompts, and simplified visual elements are key to enabling access. Yet, these features are rarely implemented systematically. Although user-centered design is broadly advocated, real-world implementation often neglects the input of disabled users. Participatory co-design remains limited, and AV systems continue to reflect sighted norms. Inclusive design benefits all users, not only by ensuring access but also by improving overall usability. This review offers theoretical and practical insights by synthesizing cross-disciplinary findings and proposing a framework for embedding accessibility throughout the design lifecycle. Inclusivity must be treated as a foundational principle, integrated from the outset of interface development rather than added post hoc as a correction.