Application segmentation delineates the demand for Automotive Organic Acid Technology (OAT) Antifreeze across distinct vehicle classes. The dominant passenger vehicle segment, encompassing sedans, hatchbacks and SUVs, accounts for roughly 55 % of total volume, driven by high replacement cycles and stringent emission standards that favor long‑life coolant formulations. Light commercial vehicles—including vans and small pickups—represent about 20 % of the market; their moderate fleet turnover and mixed‑use patterns generate steady, albeit lower‑intensity, consumption. The heavy‑duty truck category contributes an estimated 15 %; despite lower unit sales, the larger coolant reservoirs and extended service intervals elevate per‑unit spend, making this segment a high‑value niche. Finally, off‑road and specialty vehicles such as agricultural tractors, construction equipment, and military platforms comprise the remaining 10 %. These units operate under extreme temperature and load conditions, prompting manufacturers to prioritize corrosion‑resistant OAT blends. Collectively, these application slices shape the overall market size, with passenger vehicles driving volume and heavy‑duty trucks enhancing revenue per litre.