A multi-cylinder engine having an engine body with a cylinder head (31; 131), comprising: a first cylinder group provided to the engine body and comprised of a first plurality of cylinders (3a, 3b, 3c) disposed adjacent to each other; a second cylinder group provided to the engine body, comprised of a second plurality of cylinders (3d, 3e, 3f) disposed adjacent to each other, and provided adjacent to the first cylinder group; a first exhaust passage group having a first plurality of independent exhaust passage parts (31c-31h) provided to the cylinder head (31; 131) and connected to the first cylinder group or the first plurality of cylinders (3a, 3b, 3c), respectively, and a first collective exhaust passage part (31i; 131i) provided to the cylinder head (31; 131) and collecting the first plurality of independent exhaust passage parts (31c-31h) downstream in an exhaust gas flow direction; a second exhaust passage group having a second plurality of independent exhaust passage parts (31j-31o) provided to the cylinder head (31; 131) and connected to the second cylinder group or the second plurality of cylinders (3d, 3e, 3f), respectively, and a second collective exhaust passage part (31p; 131p) provided to the cylinder head (31; 131) and collecting the second plurality of independent exhaust passage parts (31j-31o) downstream in the exhaust gas flow direction; and a cooling medium passage (16; 116) provided in the cylinder head (31; 131), through which a cooling medium flows, and having an intermediate passage part (16a; 116a) provided between the first collective exhaust passage part (31i; 131i) and the second collective exhaust passage part (31p; 131p), characterized in that each of the first collective exhaust passage part (31i; 131i) and the second collective exhaust passage part (31p; 131p) has an opening (31u, 31v) in a side surface part of the cylinder head (31; 131), in a plan view of the second exhaust passage group in cylinder axis directions, the opening of the second collective exhaust passage part (31p; 131p) is offset toward the first exhaust passage group in a lineup direction of the first plurality of independent exhaust passage parts (31c-31h), and in a plan view of the first exhaust passage group in the cylinder axis directions, the opening of the first collective exhaust passage part (31i; 131i) is disposed closer to a center in the lineup direction of the first plurality of independent exhaust passage parts (31c-31h), compared with the opening of the second collective exhaust passage part (31p; 131p). a first cylinder group provided to the engine body and comprised of a first plurality of cylinders (3a, 3b, 3c) disposed adjacent to each other; a second cylinder group provided to the engine body, comprised of a second plurality of cylinders (3d, 3e, 3f) disposed adjacent to each other, and provided adjacent to the first cylinder group; a first exhaust passage group having a first plurality of independent exhaust passage parts (31c-31h) provided to the cylinder head (31; 131) and connected to the first cylinder group or the first plurality of cylinders (3a, 3b, 3c), respectively, and a first collective exhaust passage part (31i; 131i) provided to the cylinder head (31; 131) and collecting the first plurality of independent exhaust passage parts (31c-31h) downstream in an exhaust gas flow direction; a second exhaust passage group having a second plurality of independent exhaust passage parts (31j-31o) provided to the cylinder head (31; 131) and connected to the second cylinder group or the second plurality of cylinders (3d, 3e, 3f), respectively, and a second collective exhaust passage part (31p; 131p) provided to the cylinder head (31; 131) and collecting the second plurality of independent exhaust passage parts (31j-31o) downstream in the exhaust gas flow direction; and a cooling medium passage (16; 116) provided in the cylinder head (31; 131), through which a cooling medium flows, and having an intermediate passage part (16a; 116a) provided between the first collective exhaust passage part (31i; 131i) and the second collective exhaust passage part (31p; 131p), characterized in that each of the first collective exhaust passage part (31i; 131i) and the second collective exhaust passage part (31p; 131p) has an opening (31u, 31v) in a side surface part of the cylinder head (31; 131), in a plan view of the second exhaust passage group in cylinder axis directions, the opening of the second collective exhaust passage part (31p; 131p) is offset toward the first exhaust passage group in a lineup direction of the first plurality of independent exhaust passage parts (31c-31h), and in a plan view of the first exhaust passage group in the cylinder axis directions, the opening of the first collective exhaust passage part (31i; 131i) is disposed closer to a center in the lineup direction of the first plurality of independent exhaust passage parts (31c-31h), compared with the opening of the second collective exhaust passage part (31p; 131p).