The Custin is Hyundai's new minivan to fill the gap between the small Stargazer and large Staria. Unlike the Korean carmaker's other vans which sport a one box design, the Custin has a longer prominent hood and a front-end design which resembles that of its SUV siblings. Being a proper minivan, it has large rear sliding doors. The Custin has a 2+2+3 seating configuration. The GLS variant gets manual second row captain seats while the Premium variant gets power second row "VIP" captain seats with "Relaxation Modes".

Under the Custin’s hood is a 1.5-liter turbocharged T-GDI gasoline mill which produces 168hp and 253Nm of torque. Power is sent to the front wheels through an eight-speed automatic transmission.