If you're retired and on a fixed income or need to supplement your Social Security, you probably want to find ways to trim your bills so you don't run out of money.

Cutting the cost of car insurance can help. Here are 15 ways older adults can save money on car insurance.

Shop around

One of the best ways to save money on car insurance is to shop around and compare costs when looking for a new policy.

By shopping around, you can find the provider that offers the best price for the coverage you need.

Bundle your insurance policies

Bundling your policies is a great way to save on car insurance as well as other insurance coverage.

Insurance companies typically offer a discount to those who purchase multiple types of insurance, including car insurance, home insurance, and other types of coverage.

Reduce your coverage for an older car

If you have an older car, chances are good that its value has plunged over the years. If the car is old enough, carrying collision and comprehensive coverage might no longer make sense.

Although dropping these coverages can save you money, remember that without them, you will be responsible for paying out of pocket for all repair bills to fix your car.

Consider insurance costs when buying a new car

If you're thinking of buying a new car, call your insurance company and ask how much it will cost to insure the models you're interested in.

Knowing this information can help you buy a car with lower insurance costs, which can save you a lot of money over the vehicle's lifespan.

Take a defensive driving course

Some insurance companies offer a discount to seniors and others who complete a defensive-driving course.

Participating in a driving course can be time well-spent if you can save money on insurance.

Ask about senior discounts

Some insurers offer discounts to drivers who are 50 or older. So, ask your insurance company what type of senior price breaks are available.

Check on a low-mileage discount

Upon retirement, you can ditch your commute and the extra miles you were putting on your car each day.

Driving fewer miles might get you a discount on the price of your insurance. Talk to your agent or a company representative to see if your insurer offers price breaks to those who drive relatively few miles annually.

Think about raising your deductible

One way to cut back on the cost of your insurance is to raise your deductible. This should result in lower premiums.

However, remember that you are responsible for paying your deductible before your car insurance company starts to pay to cover a claim.

Keep your driving record clean

Insurance companies reward good drivers, so keeping your driving record clean can help you keep costs down.

If you steer clear of moving violations or accidents, there's a good chance you'll be rewarded with lower rates.

Keep your car well-maintained

Keeping your car in good running shape might prevent a sudden breakdown that can lead to an accident.

Not only does proper maintenance keep you safe, but it also reduces the likelihood of getting into a wreck that might drive your car insurance costs higher.

Move to a neighborhood with lower insurance rates

Few people would move just to save money on car insurance. However, if you plan to move anyway, a side benefit might be lower insurance rates.

Insurers often consider the neighborhood in which you live when setting rates. For example, people living in one part of the city might pay higher costs on average than someone who lives across town.

Sign up for a safe-driver program

Some insurance programs have safe-driver options in which you agree to let the insurer monitor your driving habits in exchange for a potential discount.

A provider may keep tabs on how you drive, where you drive, and when you drive, for example.

Check on anti-theft options

If your car is equipped with an anti-theft device, it might result in a discount. Check with your insurance company to see if it offers this option.

Pay your bill ahead of time

Many people pay their insurance premiums monthly. However, if you're willing to pay up to six months or a year in costs at once, you might get a discount.

Get a membership discount

If you belong to an organization such as AARP or AAA, you might be eligible for lower-cost car insurance.

Insurers may offer discounts to members of these organizations, so see what kind of deals you can get.

Bottom line

Car insurance costs can eat into your budget if you're on a fixed income, but there are options that can help you save money.

So, look into some of the potential savings on this list and see if any of them can help you cut costs and help you keep more cash in your wallet.