Once you do so, your car insurance company will re-rate your policy. This is because changing any information on your policy impacts your rate, such as how many drivers or vehicles are covered under the policy.
If you have a good driving record and your ex-girlfriend did not, your rate will likely go down. On the other hand, if you don’t have a good driving record and your ex-girlfriend did, your rate may increase. If you and your ex-girlfriend were rated similarly on your policy, removing her will still give you a break on the cost since you aren’t insuring as many people.
Be ready to show a change of address for your ex-girlfriend and check with your insurance agent to find out what you need to get your insurance coverage updated.