<P> In vehicles modified for endurance the primary tank (the one that comes with the car) is made into a reserve tank and a larger one installed . Some 4x4 vehicles can be fitted with a secondary (or sub-tank) by the dealership . </P> <P> A racing fuel cell has a rigid outer shell and flexible inner lining to minimize the potential for punctures in the event of a collision or other mishap resulting in serious damage to the vehicle . It is filled with an open - cell foam core to prevent explosion of vapor in the empty portion of the tank and to minimize sloshing of fuel during competition that may unbalance the vehicle or cause inadequate fuel delivery to the motor (fuel starvation). The designation "racing" is often omitted due to familiarity and because this type of gas tank is also used on street vehicles . The omission can lead to confusion with other types of fuel cells . See Fuel cell (disambiguation). </P> <P> For safety considerations, in modern cars the fuel tank is usually located ahead of the rear axle, out of the crumple zones of the car . </P> <P> Automobiles such as the Ford Pinto or the models that still use the Ford Panther platform (Ford Crown Victoria, Lincoln Town Car, and Mercury Grand Marquis) are notorious for having the fuel tank behind the rear axle . Since 1980 new Ford models corrected this problem and had the fuel tank in front of the rear axle . </P>

Where is gas tank located on a car