The well-known 3-liter injection engine with 2 valves per cylinder which for example is installed into model 300 SE has been further developed into the new 3.0-liter six-cylinder engine for the 300 SL.The 4-valve technology has been employed to increase the power rating. Mercedes-Benz has been using this kind of technology for a long time now. Models 190 E 2.3-16 and 190 E 2.5-16 have for example been equipped with it since 1984 and 1988 respectively. This experience constributed to the design of the new 6-cylinder engine. Great store has been set not only on a high power rating but naturally also on criteria like emission minimization, low noise level, long service life, good idle stability and - above all - high torque in the low engine speed range.