Why EVs Overheat and How Sunshades Fix It

Electric vehicles are built to be efficient, quiet, and smart, but they are not designed to handle heat efficiently. In fact, EV cabins can heat up faster than those of gas-powered cars because of their larger screens, insulated interiors, and glass-heavy designs. Even on a moderately warm day, an EV parked without protection can reach an uncomfortable temperature within a few minutes. 

Amazingly, a simple windshield sunshade can make a noticeable difference. Let's explore more about EVs, the reasons they tend to heat up quickly, and how sunshades help. 

1. EV Cabins Have More Glass

Modern electric vehicles, including the Kia EV6, Tesla, Polestar, and Hyundai Ioniq, come with panoramic roofs, larger windows, and larger windshields. Glass absorbs and magnifies heat. That’s why the cabin’s temperature rises quickly when the sunlight hits these surfaces, even if the outside temperature is relatively pleasant. 

Installing sunshades helps block direct sunlight from entering through the primary heat source, i.e., the windshield. This instantly reduces the cabin’s temperature. 

2. EVs Have Big, Heat-Sensitive Screens

Many EVs rely on a single large central touchscreen to control almost everything, including navigation and climate. These screens generate heat on their own and can dim or shut down when exposed to high temperatures. 

When your EV sits in the sun; 

• The screen absorbs heat quickly. 
• The display’s temperature increases.
• System performance can drop. 

Sunshades can reduce direct sun exposure, helping protect these expensive screens from overheating and long-term wear. 

3. EV Cabins Trap Heat Faster

EVs are designed to be energy-efficient, which often means tighter cabin seals, better insulation, and reduced airflow when the vehicle isn’t moving. Surely, it improves efficiency when driving, but it also traps heat for longer when the car is parked. 

A sunshade reflects sunlight before it enters the cabin, slowing heat buildup and maintaining the ideal temperature.

4. Climate Control Uses Battery Power

Unlike gas cars, EV air conditioning runs entirely on the battery. That’s why the AC needs to work harder when the cabin is hot. It can lead to faster battery drain, longer cool-down time, and reduced driving range. 

Sunshades can reduce AC load, keep the cabin cooler, help you save battery power, and maintain better range during warm weather. 

5. Heat Affects Interior Materials

EV interiors often include soft-touch plastics, vegan leather, and sensitive dashboard materials. They can all fade, crack, or warp with repeated exposure to heat. 

A sunshade protects your interior or dashboard from direct UV rays, keeping the inside of your EV in better condition over time.

How Sunshades Fix the Problem Instantly

Here’s how sunshades work magically for your EVs; 

• Reflecting sunlight. 
• Reducing cabin temperature by 20–30°F on average. 
• Blocking UV rays. 
• Preventing heat from entering through the windshield. 

This simple car accessory protects your battery range, cabin comfort, your interior material, and the vehicle’s temperature-sensitive electronics.

You’ll notice significant improvement as soon as you open the door: the air is cooler, the steering wheel isn’t burning, and your screen is safe to touch. 

Final Thoughts

EVs overheat faster than many drivers expect, but you don't need any expensive solution to resolve this issue. High-quality sunshades protect your car from rising cabin heat, helping maintain comfort, efficiency, and long-term durability.