Car insurance discounts can make a meaningful difference in what you pay each month. But you may be surprised to learn that companies don’t offer the same set of deals. Some have just a few ways to save, while others have many more. To help you find the best car insurance discounts, Yahoo Finance analyzed 20 major insurers based on three core factors: rate competitiveness, the total number of discounts offered, and the breadth of coverage options available. Below are the companies that topped our rankings ...