That said, transferring her insurance beforehand can make both your lives easier. To do so, you will need the new car’s VIN (vehicle identification number). With the VIN, you can call her insurance company to add the vehicle or you may be able to do so online. If she needs to change the coverage on her new car, you’ll also need to provide them with the type of coverage she requires. If she’s financing the new car, she needs to have full coverage auto insurance.