Car Overheating Causes and Diagnosis in UAE (2026)
Engine overheating is more common in UAE than in cooler countries, and more dangerous — UAE summer ambient temperatures reduce the temperature differential between the cooling system and the environment, making it harder for the radiator to shed heat. An engine that runs at normal temperature in UAE winter may show overheating tendency in summer as the cooling system operates near its capacity limit. Understanding the causes of UAE overheating helps drivers prevent it and respond correctly when it occurs.
Most Common UAE Overheating Causes
Low coolant level is the most common cause in UAE — a small leak that is unnoticed in winter becomes critical in summer when the remaining coolant is working at its limit. Check coolant level before every UAE summer drive. A failed thermostat (stuck closed) is the second most common cause — the thermostat controls coolant flow between the engine and radiator, and a stuck-closed thermostat prevents any hot coolant from reaching the radiator. The temperature gauge rises rapidly within minutes of the engine starting. A failed radiator fan causes overheating specifically in stop-start traffic (where airflow through the radiator from driving is zero) — the temperature rises in traffic and returns to normal on the motorway. A clogged or damaged radiator reduces heat exchange efficiency. In UAE, desert dust can partially block the radiator externally, and insects and debris from off-road driving can block the fins. A worn water pump impeller (the impeller vanes corrode and lose their pump efficiency over 120,000+ km in UAE coolant) reduces coolant circulation. Use GarageBuddy to find UAE garages for cooling system diagnosis.