The best gas for your car is Top Tier gas. There are many gas stations that offer Top Tier fuel, and all of the gas stations on this list participate in the Top Tier program. This is the cleanest and most efficient fuel available, and these stations also have special filters in place to remove water and other contaminants from the gas. As long as you purchase a Top Tier brand, the specific brand you want to use is often left up to personal preference. If you want to know who has the best gas, you could argue for any of the gas stations on this list to be at the top. Almost all of the Top Tier brands contain their own detergents and additives that will keep your engine clean for thousands of miles.