The Wall Street Journal reports that roughly 1 in 3 people never shop for their auto insurance. Almost half never shop for their home insurance. Yet if you do shop around, particularly for auto insurance, a new report from NerdWallet.com says you'll likely save one-third on your premiums.

>> RELATED: Driver's licenses from 4 states could soon be useless at the airport

>> RELATED: 8 things you should buy used

>> RELATED: 5 things you should always buy at a warehouse club

>> Read more trending stories

Don't be a data-mining statistic

Nearly half of all big auto insurers use a data mining technique called price optimization when they develop a customer loyalty index number on you. That number tells them whether or not you shop around or if you're the kind of person to stay with the same company year after year.

If they determine you're loyal, they will keep raising your rates year by year to make you more profitable for them. The increases will be incremental, but not enough to drive you away as a customer.

My recommendation is even if you are a loyal person, you should shop your insurance every third year.

If you find a better deal, call your current insurer and tell them. They may lower your rates.

The thing is, insurers steadily beef up profits the longer you stay with them. They exploit creatures of habit. That's one of the ironies of modern capitalism, as I mentioned. The deals you see, particularly in the technology arena, are typically for new subscribers only! I've never understood that.

If you just shop your auto and home insurance, you may save hundreds of dollars each year, maybe more than $1,000. You can shop on the web, by phone, or with an independent agent.

It's your money!

>> RELATED: Best auto insurance companies

Take a look at these 2 insurers

If you're with a poorly ranked insurer, there's no question: Shop the market to find a lower price and fire them! That's a win-win. You can get higher quality at a lower price.

On the other hand, if you're with the two elites of the insurance industry – Amica and USAA – I say you should stay even if it's more costly.

However, here's the great news: Consumer Reports recently took a look at the insurance industry and determined these two top-ranked companies are cheaper than the competition.

In a 23-state survey, Consumer Reports found USAA was the lowest-cost insurer for the average person. However, USAA is only available to those in the military or affiliated with the military through direct family ties. For everyone else, there's Amica Mutual. Surveyed in 10 states, Amica Mutual was the second-lowest cost insurer.

The other insurers – the ones you hear advertising all over the place – range to as much as nearly double in premium vs. USAA to 50 percent more than what average person pays with Amica Mutual.

If you do shop Amica Mutual, I should note that the first year is expensive. Because it is a mutual, that means there are no shareholders and you must buy into this company. But most customers typically get an annual rebate from the company of 20 percent of what they paid in premiums after they have a year with no claims.

So know that quality and low prices can both happen at the same time!

>> RELATED: Best and worst home insurers

For more money-saving advice, check out the insurance section at ClarkHoward.com.

>> VIDEO: High or low insurance deductible: Which is better?

Clark Howard
icon to expand image

Clark Howard

ClarkHoward.com  is America’s #1 resource for all things money.

Learn how to keep more  of what you make at

.

Clark on Facebook
icon to expand image
Clark on Twitter
icon to expand image

Money in your pocket. Advice you can trust.