WHEEL LOADER

There is provided an engine (12), an exhaust gas post-processing device (13) , an engine room (9) , a cooling room (10) , and a partition wall (9b) . The exhaust gas post-processing device (13) is disposed above the engine (12) . The engine room (9) accommodates the engine (12) and the exhaust gas post-processing device (13) . A top plate (9c) includes a first ventilationpart (9i) that includes apluralityof through-holes, and defines the upper plane of the engine room (9) . The cooling room (10) is disposed behind the engine room (9) and accommodates a cooling unit. The partition wall (9b) separates the engine room (9) and the cooling room (10).