What could cause smoke to come from under the bonnet of a fiat?

Smoke coming from under the bonnet of a Fiat could be caused by several issues, including an overheating engine due to low coolant levels or a malfunctioning thermostat. It might also indicate an oil leak, where oil drips onto hot engine components, creating smoke. Additionally, electrical problems, such as short circuits or damaged wiring, could produce smoke. It's essential to address any smoke immediately to prevent further damage or fire hazards.