Ameriprise and Costco have teamed up to offer a variety of vehicle, renters, specialty, and umbrella insurance products to Costco members with some exclusive discounts. Costco insurance is offered in 42 states and the District of Columbia. There are mixed reviews of Costco auto insurance online, with many customers expressing their satisfaction with the affordable price and unique discounts, and others expressing difficulties with customer service among other issues. Ameriprise insurance is known for its affordability and cost savings, and J.D. Power rated Ameriprise favorably for overall customer experience with 4 out of 5 power circles in the California market. With favorable reviews from J.D. Power along with potential insurance savings, current Costco customers may benefit from getting a quote from Ameriprise for auto or other insurance needs.