The M54B25 is a 2.5 L (2494 cc) engine with an 84 mm bore and 75 mm stroke. It is all-alloy with Al-Sil block, fracture-split forged steel connecting rods, a one-piece cast camshaft, and a reinforced plastic intake manifold. Output is 192 hp (143 kW) at 6000 rpm with 175 ft·lbf (245 Nm) of torque at 3500 rpm. It is built in Steyr, Austria.
The M54B30 is a 3.0 L (2979 cc) successor of the 2.8 L BMW M52. Bore remains the same at 84 mm, but stroke is increased 5.6 mm to 89.6 mm. Power is 231 hp (168 kW) while torque is 221 ft·lbf (300 Nm).
It is an all-alloy engine with Al-Sil block. It uses SFI fuel injection, has 4 valves per cylinder with Double VANOS (variable valve timing) and features fracture-split forged steel connecting rods, a one-piece cast camshaft, and reinforced plastic intake manifold. It is produced in Steyr, Austria.