which increased the torque output by . The updated engine has a smaller turbocharger, which improves response. Models Applications: 1983 - 1988 E28 524td 1985 - 1988 E28 524d (naturally aspirated) 1985 - 1993 E30 324d (naturally aspirated) 1985 - 1993 E30 324td 1988 - 1991 E34 524td 1984 - 1985 Continental Mark VII 1984 - 1985 Lincoln Continental 1986 - 1987 Vixen 21 TD and Vixen 21 XC 1989 - 1991 Bertone Freeclimber 1992 UMM Alter II (four examples built) See also List of BMW engines References M21 Diesel engines by model Straight-six engines