The width of the car influences on passanger's inner room and driving stability. The Ford Windstar II is 5 mm wider than the Mercury Villager II 3.3 170HP. It is often clearly felt by those sitting in front, who have more space for their elbows.
The wheelbase of a car equals the length separating its front and rear wheels. The wheelbase significantly affects the driving due to more appropriate vehicle's weight distribution. Ford has 8 percent longer wheelbase distance than Mercury Villager II. Wheelbase dimensions are important to the stability and steering. Hence, the mass of Ford Windstar II should be better distributed and driving should be easier and safer.
The Ford is 4 % longer than the Mercury Villager II. Long vehicles more of passenger space and usually provide bigger trunk. Although the Ford Windstar II 3.0 V6 148HP manual seems to be better pick for families or those who love the idea of convenient driving that make them feel fresh and relaxed upon arriving, the Mercury Villager II may appeal to the young because it will not cause troubles with parking and will be easier for turning in narrow streets.
If you are a tall man or you carry in the trunk thinks of large dimensions, the Ford, which is by 4 mm higher than the Mercury Villager II, would be appropriate pick for you. However, these two vehicles do not vary much it the aspect of its height and it should not be much observable.