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The intake manifold of a gasoline engine has a significant influence on the operational behavior of the engine. With respect to the dominating influence parameters on the full load behavior which are the runner length and cross section, the requirement of a variable intake manifold geometry becomes stronger than ever before. For the part load behavior, the intake charge motion is gaining more significance as well, which leads to new requirements for variable elements in the intake manifold. Besides these directly influencing layout parameters on the gas exchange and combustion process, secondary aspects such as the satisfaction of the acoustical requirements, the weight reduction and the integration of other components and functions into the complex intake manifold module will be discussed. The intake manifold of passenger car gasoline engines has undergone a significant development progress during the last two decades.