There are a few things to consider when deciding if you can put a trunk bike rack on your RAV4. The first is the size of your car. Trunk racks are designed to fit a certain range of vehicle sizes, so you'll want to make sure that your RAV4 is within the size range that the rack is meant for. The second thing to consider is the shape of your car's trunk. Some trunks are more curved or have other features that can make it difficult to attach a rack. If your RAV4 has a very curved trunk, it might be difficult to find a rack that will fit well. Finally, you'll want to think about how many bikes you want to be able to carry. Most trunk racks can carry two or three bikes, but if you need to transport more than that, you might need to look at another type of rack.