The M 120 V12 engine was offered in 6.0 litres only for the entire model run. This engine developed 290–300 kW (394–408 PS; 389–402 hp) and 569–580 N⋅m (420–428 lb⋅ft) of torque for the 6.0-litre version. The 300 kW (408 PS; 402 bhp) version was available in Europe from 1991 to 1992 and in the United States for 1992 only. In 1993, the V12 was slightly detuned to 290 kW (394 PS; 389 bhp) for lower emission control. An AMG-prepared 6.0-litre M 120 V12 with higher performance rating, 327 kW (445 PS; 439 hp) and 623 N⋅m (460 lb⋅ft), was not officially available for S-Class sedan/saloon as it was exclusive to CL-Class and SL-Class.