Alamo frequently is the least expensive of the major US rental companies -- I have used their cars repeatedly over the past 10 years and have never had a problem with them. They recently merged with another of the USA's major rental agencies (National). I don't know why they are (quite often) the cheapest, but it isn't because there are any problems with their product or service! The only problem I've ever encountered is sometimes their vehicles aren't cleaned very well (but I've encountered that with other companies as well). Bob