A vehicle includes a passenger capsule, a front module, an engine coupled to the front module, a rear module, a transaxle, and a plurality of interfaces. The passenger capsule includes a structural shell having a first end and a second end, and the front module is coupled to the first end of the passenger capsule and has a first longitudinal frame member, a second longitudinal frame member, and a front axle assembly. The rear module is coupled to the second end of the passenger capsule and includes a rear axle assembly. The transaxle is coupled to the rear module and the engine, and the transaxle includes a housing that defines a structural component of the rear module.