* The engine is running. When the engine is running, it generates heat. This heat can be transferred to the interior of the car, especially if the car is parked in the sun.
* The sun is shining. The sun can heat up the interior of a car, even if the engine is not running. This is because the sun's rays can penetrate the glass windows and heat up the air inside the car.
* The air conditioner is on. The air conditioner can also generate heat, especially if it is set to a high temperature. This is because the air conditioner has to work harder to cool the air inside the car, which can generate heat.
If your car smells hot, it's important to find out the source of the smell. If the smell is coming from the engine, you should have the engine checked by a mechanic. If the smell is coming from the sun, you can try parking your car in the shade or using a sunshade to block the sun's rays. If the smell is coming from the air conditioner, you can try setting the air conditioner to a lower temperature.
