Our exclusive data analysis may challenge what you thought you knew about saving on car insurance

Published: July 30, 2015

MYTH: Your Premium Is Based on Your Risk

HIDDEN TRUTH: Your sensitivity to price can also be a factor

In yet another bid to maximize profits, some insurance companies have begun in the past few years to use a new technique to determine your sensitivity to prices. That way, they can base your premiums not just on your risk profile or credit score but also on the amount you’re willing to tolerate. Called price optimization, the practice—which isn’t allowed in California, Florida, Indiana, Maryland, Ohio, Vermont, and Washington for car insurance—uses data about you and statistical models to gauge how likely you are to shop around for a better price. Will you put up with a $100 increase? Yes? How about $200?

But according to Bob Hunter, director of insurance for the Consumer Federation of America (CFA), who has studied price optimization, those models can also take into account measures that seem to be unrelated to car insurance. They include the number of iPhones and beers you have purchased, or whether you’re sticking with Verizon FiOS when DirectTV might be cheaper. While the CFA believes price optimization to be illegal because it unfairly discriminates, an industry group, the Insurance Information Group, claims that the states that have prohibited it have done so with no evidence that is is a detriment to the market.

Amica Mutual and State Farm told us they don't use price optimization. Representatives from Allstate, Geico, Progressive, and USAA declined to discuss price optimization.

MYTH: You Can Save a Lot by Bundling Car and Home Insurance

HIDDEN TRUTH: The savings can be insignificant

Insuring a vehicle is a pricey proposition, and car insurance companies aggressively boast about ways you can save money with them. But our study revealed that some of the discounts that are advertised the most, such as the one for bundling home and car insurance, are not always much to write home about.

The discount for buying your home insurance from the same company was only $97 per year for our single drivers, nationally, on average. That's about an 8 percent savings.

But the averages ranged from as little as $31 a year in Florida to as much as $240 in Michigan.

MYTH: You’ll Get a Nice Discount if You Buy Anti-Theft Equipment

HIDDEN TRUTH: You’ll save only a few bucks

You can pay hundreds of dollars to install an anti-theft device on your car, and insurers encourage the expenditure by promising discounts of "up to 10 percent," says Allstate, for example. But we found the discount on six types of anti-theft devices and measures was not much of a discount at all, just $2 per year for our single drivers, on average nationally. As the graphic shows, the average discount varied from $1 for the low-technology, low-cost hood lock to $8 for the more costly high-tech tracking device. But even $8 amounted to only a 0.7 percent discount. You wouldn't clip a supermarket coupon for savings so minuscule.

Average discounts for anti-theft device or measure


Tracking Device


Passive Disabling Device


Audible Alarm


Active Disabling Device


VIN Etching on Window


Hood Lock

MYTH: You Get a Loyalty Discount for Staying With the Same Company a Long Time

HIDDEN TRUTH: You don't always get a discount

Many companies, including car insurers, reward their most loyal customers with discounts or other incentives. It’s a smart business model. But our study found that while some insurers give a sizable discount, others give a small one, and still others offer nothing at all. Some insurers even salute your allegiance with a price hike.

It is common for consumers to stay with the same insurance company for a long time. Fifty-three percent of Consumer Reports subscribers have stayed put for 15 years or more, according to our most recent survey. But that kind of complacency can cost you. In Washington State, for example, seven of 15 insurers didn’t give a discount to our married couples who had been steadfast customers for at least 15 years, including Amica Mutual and Farmers.

Trusted name brands were no guarantee of anything: In Washington, State Farm Fire & Casualty offered no discount; State Farm Mutual provided $182, or 15 percent in savings. Geico General and Geico Government Employees didn’t offer a discount.

Discounts also varied by state. USAA offered a nice savings of $197 in Kentucky but a meager $14 loyalty discount in Washington, nothing in Colorado and Michigan, and a $28 loyalty penalty in New York.

While Geico Casualty did offer an $888 loyalty discount in New York, just across the state line in New Jersey there was no discount for longtime customers, but there was no penalty either. State Farm Mutual consistently provided discounts of a couple of dollars up to a few hundred dollars.

Correction: An earlier version of this article incorrectly indicated loyalty penalties for customers of Geico Casualty in New Jersey and Washington state, as well as for Allstate Fire and Casualty, and Allstate Property and Casualty. There were no penalties. We’ve amended the text to reflect this.