In a variable stroke engine assembly for a front engine, front wheel drive vehicle, an engine output shaft (OS), a variable stroke control mechanism (63, 65, CR), an actuator (AC) and a starter motor (SM) are laid out in a favorable manner so that the general outer profile of the engine assembly can be made free from excessive protrusions, an increase in the engine room space requirement is avoided, layout freedom can be enhanced, and the cooling performance for the actuator can be improved.