Sunardi and Nur Daffa Zain, A. 2025. Clustering-Based Analysis of Fuel Efficiency and Emissions in Automotive Data Using PCA and K-Means. Jurnal Rekayasa Mesin. 20, 2 (Aug. 2025), 279–288. DOI:https://doi.org/10.32497/jrm.v20i2.6709.