A motor vehicle comprising: a vehicle engine; an exhaust purifier housing a purification unit that purifies exhaust gas; and an EGR passage connected to a portion of the exhaust purifier located downstream of the purification unit, and the vehicle engine being mounted in an engine compartment defined in a front portion of a vehicle body, wherein the exhaust purifier is positioned forward of a partition wall in a longitudinal direction of the motor vehicle, and extends toward a tunnel portion extending rearward from the partition wall in the longitudinal direction of the motor vehicle, the partition wall defining a rear portion of the engine compartment, and an upstream end portion of the EGR passage is connected to a lower portion of the exhaust purifier in a vertical direction of the motor vehicle, the exhaust purifier is connected to a cylinder head via an exhaust manifold, the exhaust manifold includes branch passages, each of which is connected to an associated one of cylinders through an exhaust port of the cylinder head, and a meeting portion at which the branch passages meet together to be connected to the exhaust purifier, the meeting portion is located on one side in a cylinder bank direction of the branch passages, and extends downward on the one side, the exhaust purifier is positioned on the other side in the cylinder bank direction relative to a lower end portion of the meeting portion, the exhaust purifier includes a casing configured to house the purification unit, the casing is a pipe substantially in a shape of L positioned with its horizontal bar extending along a vehicle width direction and a vertical stem extending toward the rear side of the motor vehicle, and the casing has a bar portion corresponding to the horizontal bar of the L shape and connected directly to a downstream end of the meeting portion, characterized in that when the bar portion is divided into two sections (14, 15) aligned in the cylinder bank direction, an upstream portion of the sections near one end in the cylinder bank direction is vertically aligned with portions of the branch passages curved to bulge downward, when the bar portion is divided into two sections (14, 15) aligned in the cylinder bank direction, a downstream portion of the sections near the other end in the cylinder bank direction is vertically aligned with portions of the branch passages curved to bulge downward. a vehicle engine; an exhaust purifier housing a purification unit that purifies exhaust gas; and an EGR passage connected to a portion of the exhaust purifier located downstream of the purification unit, and the vehicle engine being mounted in an engine compartment defined in a front portion of a vehicle body, wherein the exhaust purifier is positioned forward of a partition wall in a longitudinal direction of the motor vehicle, and extends toward a tunnel portion extending rearward from the partition wall in the longitudinal direction of the motor vehicle, the partition wall defining a rear portion of the engine compartment, and an upstream end portion of the EGR passage is connected to a lower portion of the exhaust purifier in a vertical direction of the motor vehicle, the exhaust purifier is connected to a cylinder head via an exhaust manifold, the exhaust manifold includes branch passages, each of which is connected to an associated one of cylinders through an exhaust port of the cylinder head, and a meeting portion at which the branch passages meet together to be connected to the exhaust purifier, the meeting portion is located on one side in a cylinder bank direction of the branch passages, and extends downward on the one side, the exhaust purifier is positioned on the other side in the cylinder bank direction relative to a lower end portion of the meeting portion, the exhaust purifier includes a casing configured to house the purification unit, the casing is a pipe substantially in a shape of L positioned with its horizontal bar extending along a vehicle width direction and a vertical stem extending toward the rear side of the motor vehicle, and the casing has a bar portion corresponding to the horizontal bar of the L shape and connected directly to a downstream end of the meeting portion, characterized in that when the bar portion is divided into two sections (14, 15) aligned in the cylinder bank direction, an upstream portion of the sections near one end in the cylinder bank direction is vertically aligned with portions of the branch passages curved to bulge downward, when the bar portion is divided into two sections (14, 15) aligned in the cylinder bank direction, a downstream portion of the sections near the other end in the cylinder bank direction is vertically aligned with portions of the branch passages curved to bulge downward.