As getting car insurance quotes require specific information about the car, it's not possible to get a quote without a car. Unless you know the car you're buying and its registration number.
If you're on the hunt for budget car insurance and haven't yet bought your car, we recommend spending some time looking around for cheap cars to insure. All cars are grouped into one of 50 different insurance classes, with group one cars being the cheapest. So, if you want to save on cover, your best bet is to choose a car in a lower group.