Cheap Car Insurance San Antonio tend to pay $130 more for auto insurance premium than the rest of the state ( TEXAS ). Average car insurance in San Antonio can cost around $2,238 per year, while average car insurance rate for Indiana is $2,330. In San Antonio itself, the difference between the cheapest ( Texas Farm Bureau - $1,146 ) and the most expensive car insurance company ( Dairyland - $3,360 ) is over $2000 a year. We have compared car insurance quotes from multiple companies in San Antonio to determine which insurance company offer the cheapest car insurance rates and which has the most expensive quotes. Based on our data Texas Farm Bureau, Progressive and State Farm Car insurance offer the cheapest auto insurance rates in San Antonio TX.