A vehicle comprising: an engine compartment; an engine hood; an internal combustion engine (20; 120) arranged inside the engine compartment, covered under the engine hood, and comprising: an engine body (30; 130) having a lower surface (40; 140), a rear surface (41; 141), and two side surfaces (42; 142), wherein the lower surface (40; 140) faces downward of the vehicle, the rear surface (41; 141) faces a rear of the vehicle, and the side surfaces (42; 142) face away from each other in a vehicle width direction; a transmission case (70; 170), which is coupled to the engine body (30; 130) and accommodates a transmission; a cover (80; 180), which covers the engine body (30; 130) so that each of the lower surface (40; 140), the rear surface (41; 141), and the side surfaces (42; 142) is covered by the cover (80; 180) or the transmission case (70; 170); and an auxiliary device (60, 65), which is attached to and drivingly coupled to the engine body (30; 130), wherein the auxiliary device (60, 65) has an opposite surface located on a side opposite to the engine body (30; 130), and the opposite surface of the auxiliary device (60, 65) does not face the cover (80; 180), the vehicle being characterized in that the transmission case (70; 170) and the cover (80; 180) do not cover a front surface (44; 144) and an upper surface (43; 143) of the engine body (30; 130), and the auxiliary device (60, 65) is attached to the front surface (44; 144) or the upper surface (43; 143) of the engine body (30; 130). an engine compartment; an engine hood; an internal combustion engine (20; 120) arranged inside the engine compartment, covered under the engine hood, and comprising: an engine body (30; 130) having a lower surface (40; 140), a rear surface (41; 141), and two side surfaces (42; 142), wherein the lower surface (40; 140) faces downward of the vehicle, the rear surface (41; 141) faces a rear of the vehicle, and the side surfaces (42; 142) face away from each other in a vehicle width direction; a transmission case (70; 170), which is coupled to the engine body (30; 130) and accommodates a transmission; a cover (80; 180), which covers the engine body (30; 130) so that each of the lower surface (40; 140), the rear surface (41; 141), and the side surfaces (42; 142) is covered by the cover (80; 180) or the transmission case (70; 170); and an auxiliary device (60, 65), which is attached to and drivingly coupled to the engine body (30; 130), wherein the auxiliary device (60, 65) has an opposite surface located on a side opposite to the engine body (30; 130), and the opposite surface of the auxiliary device (60, 65) does not face the cover (80; 180), the vehicle being characterized in that the transmission case (70; 170) and the cover (80; 180) do not cover a front surface (44; 144) and an upper surface (43; 143) of the engine body (30; 130), and the auxiliary device (60, 65) is attached to the front surface (44; 144) or the upper surface (43; 143) of the engine body (30; 130). an engine body (30; 130) having a lower surface (40; 140), a rear surface (41; 141), and two side surfaces (42; 142), wherein the lower surface (40; 140) faces downward of the vehicle, the rear surface (41; 141) faces a rear of the vehicle, and the side surfaces (42; 142) face away from each other in a vehicle width direction; a transmission case (70; 170), which is coupled to the engine body (30; 130) and accommodates a transmission; a cover (80; 180), which covers the engine body (30; 130) so that each of the lower surface (40; 140), the rear surface (41; 141), and the side surfaces (42; 142) is covered by the cover (80; 180) or the transmission case (70; 170); and an auxiliary device (60, 65), which is attached to and drivingly coupled to the engine body (30; 130), wherein the auxiliary device (60, 65) has an opposite surface located on a side opposite to the engine body (30; 130), and the opposite surface of the auxiliary device (60, 65) does not face the cover (80; 180), the vehicle being characterized in that the transmission case (70; 170) and the cover (80; 180) do not cover a front surface (44; 144) and an upper surface (43; 143) of the engine body (30; 130), and the auxiliary device (60, 65) is attached to the front surface (44; 144) or the upper surface (43; 143) of the engine body (30; 130).