Use seat coversIf your car has leather seats, investing in seat covers is almost a must if you hope to make it through the hottest months of the year without too much discomfort. There's no getting around it — when your car is hot, your car seats are going to be hot. You've likely experienced sweat running down your back and felt the burn of a hot car seat on your legs. Seat covers for your car can help make that heat more bearable by covering the leather with a breathable, cool material.If you don't mind spending a few extra dollars, you could invest in cooling seat covers designed to dissipate heat and improve air circulation. Some of these seats use built-in fans, and others use cooling materials to regulate the temperature of your seats. Seat covers with built-in fans draw power from the car's electrical system, usually using a 12V plug. These fans provide a constant flow of air to cool down hot seats. Other seat covers use breathable mesh, gel, or memory foam, along with cooling gels or other cooling technology, to keep you cool on hot days.Cover your steering wheel and dashboardJust like the seats, your steering wheel can become uncomfortable to the touch when your car has been baking in the sun. Depending on where you live, the steering wheel may get so hot you can't touch it for more than a few seconds without risking serious burns, making it impossible to drive until your car has cooled down. While window tinting and a reflective sunshade will help lower your car's temperature, that may not be enough to keep your steering wheel cool. Steering wheel covers can cost anywhere from $10 to $100, depending on the material they're made from and the brand, with vinyl and polyester covers generally being the least expensive. If you're not using a sunshade, you should consider protecting your dashboard with a cover. These covers reduce the amount of heat the dashboard absorbs, helping to keep your car's interior cooler and prevent the dashboard from becoming too hot to touch. Like sunshades, they'll also protect your dashboard from UV rays, which will help prevent cracking, fading, and warping over time. They're inexpensive and a good long-term investment for your car.