<p>The global shift toward sustainable infrastructure has driven innovation in asphalt technologies, particularly the development of Warm Mix Asphalt (WMA). WMA allows asphalt mixtures to be produced and compacted at significantly lower temperatures -typically 110–140&#xa0;°C compared to 150–180&#xa0;°C for conventional Hot Mix Asphalt (HMA)—resulting in substantial reductions in greenhouse gas emissions, energy consumption, and construction-related environmental impacts. This review consolidates to critically evaluate WMA technologies as a low carbon alternative to conventional HMA, with particular emphasis on emission reduction mechanisms, performance characteristics, and sustainability outcomes. A systematic literature review was conducted following PRISMA guidelines, covering peer reviewed studies published over the last two decades. The review indicates that foaming methods, chemical surfactants (e.g., Evotherm, Rediset, Cecabase RT®), organic waxes (e.g., Sasobit, Montan), mineral additives (e.g., zeolites, perlite), and hybrid combinations is showing 30–35%, 15–30%, 20–30%, 15–25% and 30–34% respectively reduction in CO₂ emissions and up to 70% energy savings. Performance evaluations reveal that properly designed WMA additives improve workability, moisture resistance, and fatigue life, although some additives may present challenges in rutting resistance or long-term aging. The integration of Reclaimed Asphalt Pavement (RAP) and other recycled materials (e.g., plastic waste, RCA) further enhances the sustainability of WMA by conserving raw materials and minimizing landfill waste. Studies show that combining WMA with 30–70% RAP can reduce emissions by up to 40% when appropriately designed, without significantly compromising mechanical performance under most service conditions. However, the successful implementation of WMA is influenced by several factors, including binder viscosity, aggregate characteristics, compaction temperature, air void content, and climatic conditions. Unlike previous reviews, this study provides a comparative synthesis of CO₂ reduction ranges across additive categories, critically discusses methodological inconsistencies in life cycle assessments, links environmental benefits with mechanistic performance outcomes. It also highlights the role of digital construction frameworks in overcoming WMA implementation barriers. These contributions offer a more integrated and practice-oriented approach on WMA for low carbon road construction.</p>