A steep driveway can be bad for your car in a few different ways. First, if the driveway is made of concrete or asphalt, it can be difficult to get traction on a steep incline. This can cause your tires to slip and skid, which could lead to an accident. Second, a steep driveway can put extra wear and tear on your brakes. If you have to brake frequently to keep your car from rolling backwards down the driveway, you may notice that your brakes start to wear out more quickly. Finally, a steep driveway can make it difficult to see obstacles in front of your car, like children or animals. If you can't see what's in front of you, you could hit something and cause damage to your car.