Air-cooled engines are not generally used on modern cars because it is very difficult to maintain constant temperatures at the cylinders. If the cylinder temperature is not accurately controlled, the engine will not run efficiently.

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Air-cooled engines struggle with maintaining consistent temperatures across all cylinders, which is crucial for efficient engine operation. Modern cars predominantly use water-cooled systems that more effectively manage engine temperatures, ensuring better performance and reliability.

Air-Cooled Engines Are Not Generally Used on Modern Cars Because