The Mazda J-family are a range of 60-degree V6 engines featuring a cast-iron cylinder block and alloy heads with belt-driven DOHC or SOHC.

Applications: The JE is a 3.0 L (2,954 cc) SOHC 18 valve V6 used in the 1989-1998 Mazda MPV and 1988-1991 Mazda 929, and produced 150 hp (112 kW; 152 PS) and 165 lb⋅ft (224 N⋅m) of torque.

A JE-ZE DOHC variant was in the 1990-1995 Mazda 929 S, producing 203 hp (151 kW; 206 PS).

Applications: The 2.5 L J5-DE is a DOHC motor producing 160 PS (118 kW; 158 hp).

When used by Kia in South Korea, the J5 engine claimed 175 PS (129 kW; 173 hp) at 6,000 rpm.