Sean will summarize different methods used for subjective evaluation of automotive audio systems, with emphasis on perceived sound quality, spatial impression, distortion spectral balance, and listener preference inside the vehicle cabin. He will highlight the challenges of measuring audio in a complex acoustic environment, the strengths and weaknesses of each approach and shows how controlled evaluations can connect human perception with engineering metrics. The presentation also discusses how these insights guide system tuning, design validation, and the creation of more engaging in-car listening experiences.