- The car choice for some characters aren't simply due to a combination of performance and personal taste, but rather a financial one.
- Amateur car enthusiasists, like the Akina Speed Stars, use affordable vehicles: Iketani's S13 Silvia is decently priced even for a sports car, as is Itsuki's AE85 since it's actually an economy car. Case in point, Itsuki's still in high school when he purchased his AE85. One can even make an argument for the Fujiwara's AE86, similarly affordable like the AE85, given Takumi is also in high school during the start of the series (never minding the fact that Bunta has used the AE86 for years until he buys a replacement Impreza GC8 as he hands the AE86 down to his son).
- The Takahashi brothers come from a wealthy family, with the elder Ryosuke currently enrolled in university and studying to be a doctor. This is before mentioning how people In-Universe state Ryosuke has been on the cover of racing magazines, which must come with some form of royalty payments. This explains why they drive the more expensive Mazda RX-7 FC and FD.
- Like the Takahashi brothers, both members of "Purple Shadow" in Fourth Stage have tons of money: Toshiya "God Arm" Joshima is a certified doctor, implying he's earned a lot in his many years for medicine, while Kozo "God Foot" Hoshino explicitly says he has switched between three GT-Rs (the R32, R33, and R34) four times, even claiming he has enough to buy a Ferrari (he simply doesn't want to).
Fridge / Initial D