Initial D Fourth Stage

Both series are about Japanese street racing. Both take place in real life places. Mt Akina and its surrounding race grounds actually do exist. Wangan used the be THE spot in Japan for street racers to gather and race. The major differences between Initial D and Wangan Midnight is that Initial D focuses much more on the driver, their technique, and driving styles to become the fastest racer. Wangan Midnight focuses much more on the car, its mechanics, parts, and tuning process to become the fastest racer. Although both have some parts that over lap as Initial D do sometimes talk about tuning and Wangan's drivers are noted to be skilled. read more 

Although in different types of car racing form/genre, both animes are focused on real world car racing and tuning... 

Both shows feature basic looking characters that turn out to be very fast behind the wheel, as well as both, dive deeper into the various car mechanics used to increase performance