5. Erie Insurance Group
Erie Insurance Group is one of the smallest enterprises on this list. They only operate in 12 states from their base in Pennsylvania. Their most sought offer is the Erie Rate Lock feature which holds the rate steady. The only way rate changes are if you change your address or automobile. They also offer a diminishing deductible for each year you are claim free. Clearsurance.com gave them a score of 4.48 based on 516 reviews.