Does the Trunk Provide Better Heat Insulation in Summer?
2 Answers
In summer, the temperature inside the car is generally higher than in the trunk. This is because the front windshield is made of transparent glass, allowing external sunlight and radiation to enter the cabin more easily. The trunk, on the other hand, offers better heat insulation. For sedans, there might not be much difference, but overall, the car interior tends to be hotter than the trunk. Here are some additional tips for cooling down your car: 1. Air circulation: Start by opening the windows and doors to ventilate the car. Once the vehicle is running stably, turn on the air conditioning in external circulation mode. When the temperature inside and outside the car becomes similar, close the windows and doors and switch to internal circulation. This is a common method for cooling down the car. 2. Fundamental solutions: Whenever possible, park in shaded areas. If you have no choice but to park under direct sunlight, try to position the rear of the car toward the sun. Since the rear window is smaller, it allows less sunlight to penetrate, reducing heat buildup in the cabin compared to parking with the front facing the sun. It's also advisable to use a car cover or place a sunshade on the windshield to block direct sunlight.
As an ordinary car owner who frequently drives in summer, I can say that the trunk basically doesn't provide much insulation during hot months. This is mainly because most vehicle designs use materials like metal and plastic for the trunk, which absorb heat quickly. Under direct sunlight, the temperature inside can soar above 60°C, affecting stored items. I remember once putting some chocolates in there, only to find them completely melted, leaving the trunk sticky. Since then, I've learned to park in shaded areas or use a simple insulating mat. Poor insulation can also heat up drinks or cause electronic devices to overheat and get damaged. So, I suggest everyone open the windows to ventilate for a few minutes before loading items to avoid getting burned. Keeping a portable thermometer in the car helps monitor the temperature anytime. Though these small adjustments cost little, they make things much safer—after all, no one wants their trunk turning into an oven and ruining their summer trip mood.
