In Japan, passenger vehicles are categorized into
Kei passenger vehicle and passenger vehicle by
law. Kei passenger vehicle is restricted by
regulations for its physical size; passenger
capacity; engine displacement; and power and also
taxes imposed upon owing vehicles are different
by two categories. The way how the vehicles are
used is different by Kei passenger vehicle and
passenger vehicle owners. Indeed, the estimated
annual average mileage from our national statistics
for vehicle transport [5] and the number of the
vehicles held [6] shows different trend between
two categories (7186 km/yr for Kei passenger
vehicles and 9026 km/yr for passenger vehicles,
respectively). In this paper, consumer preference
for EVs is therefore estimated separately by Kei
passenger vehicles and passenger vehicles