Once you've completed an approved defensive driving course, your auto insurer can apply the discount to you for several years. If you're still eligible for a discount after that period has expired, you may be able to retake a defensive driving course to conserve your savings. The amount of the discount you will receive depends on your insurance company. As long as you have a good driving record, you can generally save between 5% and 15% a month.
Most major auto insurance companies offer discounts to drivers who take a defensive driving course, except Progressive. Defensive driving is typically aimed at young and older drivers who may have higher car insurance premiums, but a defensive driving discount can be offered to people of all ages. Completing a defensive driving course can help you save on car insurance if your insurance company offers a discount for defensive drivers.