Consumer Reports says to buy good-quality gas and recommends using Top Tier gas. Top Tier is a higher standard that brands, ...

In Silicon Valley and elsewhere, services are offering to fill your tank with gas while you're at home or work. But fire departments say it's illegal. Cities, and particularly fire departments ...

Take, for instance, older model trucks equipped with two gas tanks instead of one. On the one hand, two fuel tanks can be beneficial under heavy workloads such as hauling large equipment and/or ...

To do this, we multiply a test vehicle's real-world mpg result by the size of its fuel tank and round down to the nearest 10-mile increment so that our estimate isn't overly optimistic.