It’s a Toss up between Mario Kart DS, Wii and 8

Mario Kart DS had a beautiful soundtrack and the controls were Tight as Hecc.

Mario Kart Wii also had a good soundtrack and while the controls weren’t as tight, it definitely was exhilarating Stunting off ramps and such.

Mario Kart 8 was the first Mario Kart to have DLC nuff said.

Also this

https://soundcloud.com/user409121565/sets/mario-kart-ds-ost