You can shop for quotes using just the make and model of the car you intend to buy.
Once you pick a specific car, provide the VIN to the insurer to set the start date for your planned purchase day.
To get proof of insurance before buying a car, you essentially need to secure a policy that activates the moment you take ownership. This process differs depending on whether you already have an existing policy or are a first-time buyer. If You Already Have Insurance
If you have the Vehicle Identification Number (VIN) from the seller or dealer, you can add it to your policy online or via app immediately.