Qualifying for discounts on your auto insurance is a great way to reduce the premiums on your policy, and one discount you might qualify for is a low-mile discount. Drivers who do not put a lot of miles on their cars each year often pay less for their auto insurance, and here are a few things you should know about this: What is considered low mileage? The first thing to understand is that there is no set formula that tells you exactly what low miles means.