It doesn't hurt to do a little research and see what other companies will charge to cover your vehicle(s). Check out sites like www.insweb.com, www.insurance.com, and www.esurance.com. Answer a few questions and you will be presented with a list of companies willing to provide you with an online quote almost immediately. Select the one with the best rate and then call your insurance company too see if they will beat the price for the same coverage.
Others ways to save include, raising your deductible, driving a car that costs less to insure, drop some of your coverage and take advantage of all the available discounts offered.