Why Auto Insurance Rates Are Different Between Insurers

One of the biggest misconceptions consumers have about auto insurance is that every company charges similar rates for the same coverage. In reality, the difference between the low and high ends of the market are often staggering. Depending on the types of coverage you have on your current policy, and your deductibles, you can potentially save several hundreds of dollars by shopping around.

Below, we'll take a closer look at why car insurance rates can vary so dramatically between multiple insurers for the same level of coverage. We'll first describe some of the factors that influence your rates. Then, we'll explain how those factors imply the likelihood of future claims, and thus, play a key role in determining your premiums.

Factors That Suggest Future Claims

Auto insurance companies use actuaries and statistical models to analyze data about past claims. This analysis helps them to determine how likely a given policyholder is to file a claim in the future. It is based on several individual factors.

Your driving history is a key barometer because it offers insight into the decisions you make behind the wheel. If you have received a high number of demerit points in the past, or have been involved in one or more accidents, you will be assigned a higher risk class.

Your age, gender, and marital status also play a role. Younger drivers tend to take more risks. So too, do men (though insurers are discovering the gap between genders is narrowing). Unmarried policyholders are likewise considered more prone to take risks and therefore, more likely to make a claim.

Your postal code is used because it suggests to the insurer the likelihood of your vehicle being damaged or stolen. Both events typically result in a claim. The kind of vehicle you drive, your credit score, and your education are also considered.

Each of these factors (as well as others) give car insurance companies an idea regarding the chances you'll file a claim in the future. Because each claim carries a cost, insurers will raise your rates in order to compensate them for assuming the associated risk.

Different Insurers, Different Statistical Models

Auto insurance companies use different models in order to determine your risk class. Some of the factors described above are universal across all insurers. For example, every company will consider your driving history when calculating your rates. They'll also take into account your age and postal code. On the other hand, some factors are ignored by many insurance companies.

These variances are largely responsible for the gap in car insurance quotes you'll see when comparing multiple companies. But the differences in statistical models extend further.

The contributing factors (i.e. age, driving history, etc.) are not only used or ignored by insurers, but those that are used are assigned different weights within the risk formula. The more weight assigned, the more influence a given component will have on your premiums.

For example, suppose you have a low credit score. When comparing car insurance rates between two companies, you notice a wide gap. In this scenario, there is a good chance both insurers are using your credit score, but are weighting it differently. The company offering a lower rate may consider your score less important.

Other Reasons Car Insurance Rates Vary

Beyond statistical models, the rates quoted by insurers are also a partial reflection of their respective costs of doing business. Some companies have higher costs than others. Some spend more on advertising. Some maintain larger structures with more support staff. Each of these factors can influence the car insurance rates you receive. Sometimes, they'll vary dramatically.

The purpose of the discussion above is to encourage you to compare auto insurance quotes on a regular basis. Too many consumers simply renew their policies each year under the assumption that every auto insurer offers the same premiums. This is a common fallacy that costs policyholders millions of dollars each year. Invest a few minutes to discover whether lower car insurance rates are right around the corner.