Under the cents-per-mile system, rewards for driving less are delivered automatically, without the need for administratively cumbersome and costly GPS technology. Uniform per-mile exposure measurement for the first time provides the basis for statistically valid rate classes. Insurer premium income automatically keeps pace with increases or decreases in driving activity, cutting back on resulting insurer demand for rate increases and preventing today's windfalls to insurers, when decreased driving activity lowers costs but not premiums.
For example, a 50-year-old woman with 30 years' driving experience and a squeaky clean licence is in a prime position for one of the cheapest insurance policies available. Her 18-year-old daughter on the other hand, recently unleashed onto the roads, will be considered a far higher risk for the insurer, consequently increasing the overall cost. Read our guide on getting cheap insurance for young drivers if this applies to you.
Liability auto insurance protects you from that worst case scenario by providing a cushion between your assets and the amount you’re on the hook for. For this reason, choosing the right auto liability limits is the most important part of your car insurance quote comparison. NerdWallet typically recommends having at least as much liability coverage as your net worth.