You can change your car online 24/7 in My Account.
1. Login to My Account, and select the 'Manage Policy' button.
2. Go to the "Car" section, select "Make a Change" and decide when you would like the change to be effective from
3. From the drop-down, choose 'Change car details' and proceed to enter the details of your new vehicle.
If you haven't registered for an online account yet, you can do this here.
There may be a change to your premium as a result of this change. You'll see a quote for any increase or decrease in your premium as a result of any changes you have made before you decide to proceed.