2013 Kawasaki Mule 4010 4x4 Diesel, 2013 Kawasaki® Mule 4010 4x4 Diesel If you need straightforward reliability in a vehicle that was designed by some of the finest heavy-duty engineers in the world, then you need a Diesel Mule side x side! In its purest form, that means a 2013 Kawasaki® Mule 4010 4x4 Diesel. No other utility vehicle on this planet can match a Mule s combination of strong Kawasaki® engineering, ease of use and long term dependability.