A vehicle comprising: an engine compartment or engine room; and an engine system comprising: an engine; and an engine intake system, wherein the engine is a longitudinally mounted engine, the engine intake system comprises: an engine cover configured to cover the engine accommodated in the engine compartment or engine room of the vehicle; an intake pipe through which air is introduced into the engine; and an intake silencer that is provided to the intake pipe and configured to suppress a pressure fluctuation of the air in the intake pipe to reduce intake sound, the intake pipe extends rearward of the vehicle, a part of the intake silencer is configured to be covered with the engine cover, and a remaining part is configured to be exposed from the engine cover, the intake silencer is an expansion intake silencer having an expansion chamber, the intake pipe runs around to a rear side of the engine, and extends from the rear side of the engine to be connected to a supercharger or a turbocharger, an upstream portion other than a downstream portion of the intake silencer is exposed from the engine cover, a part of the expansion chamber is exposed from the engine cover, and a remaining part of the expansion chamber is covered with the engine cover, and the portion of the intake silencer that is covered with the engine cover is configured to be inserted in the engine cover from a through hole that is formed in the engine cover. an engine compartment or engine room; and an engine system comprising: an engine; and an engine intake system, wherein the engine is a longitudinally mounted engine, the engine intake system comprises: an engine cover configured to cover the engine accommodated in the engine compartment or engine room of the vehicle; an intake pipe through which air is introduced into the engine; and an intake silencer that is provided to the intake pipe and configured to suppress a pressure fluctuation of the air in the intake pipe to reduce intake sound, the intake pipe extends rearward of the vehicle, a part of the intake silencer is configured to be covered with the engine cover, and a remaining part is configured to be exposed from the engine cover, the intake silencer is an expansion intake silencer having an expansion chamber, the intake pipe runs around to a rear side of the engine, and extends from the rear side of the engine to be connected to a supercharger or a turbocharger, an upstream portion other than a downstream portion of the intake silencer is exposed from the engine cover, a part of the expansion chamber is exposed from the engine cover, and a remaining part of the expansion chamber is covered with the engine cover, and the portion of the intake silencer that is covered with the engine cover is configured to be inserted in the engine cover from a through hole that is formed in the engine cover. an engine; and an engine intake system, wherein the engine is a longitudinally mounted engine, the engine intake system comprises: an engine cover configured to cover the engine accommodated in the engine compartment or engine room of the vehicle; an intake pipe through which air is introduced into the engine; and an intake silencer that is provided to the intake pipe and configured to suppress a pressure fluctuation of the air in the intake pipe to reduce intake sound, the intake pipe extends rearward of the vehicle, a part of the intake silencer is configured to be covered with the engine cover, and a remaining part is configured to be exposed from the engine cover, the intake silencer is an expansion intake silencer having an expansion chamber, the intake pipe runs around to a rear side of the engine, and extends from the rear side of the engine to be connected to a supercharger or a turbocharger, an upstream portion other than a downstream portion of the intake silencer is exposed from the engine cover, a part of the expansion chamber is exposed from the engine cover, and a remaining part of the expansion chamber is covered with the engine cover, and the portion of the intake silencer that is covered with the engine cover is configured to be inserted in the engine cover from a through hole that is formed in the engine cover. an engine cover configured to cover the engine accommodated in the engine compartment or engine room of the vehicle; an intake pipe through which air is introduced into the engine; and an intake silencer that is provided to the intake pipe and configured to suppress a pressure fluctuation of the air in the intake pipe to reduce intake sound, the intake pipe extends rearward of the vehicle, a part of the intake silencer is configured to be covered with the engine cover, and a remaining part is configured to be exposed from the engine cover, the intake silencer is an expansion intake silencer having an expansion chamber, the intake pipe runs around to a rear side of the engine, and extends from the rear side of the engine to be connected to a supercharger or a turbocharger, an upstream portion other than a downstream portion of the intake silencer is exposed from the engine cover, a part of the expansion chamber is exposed from the engine cover, and a remaining part of the expansion chamber is covered with the engine cover, and the portion of the intake silencer that is covered with the engine cover is configured to be inserted in the engine cover from a through hole that is formed in the engine cover.