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Does anyone have a link to a technical description of the differences between the engine characteristics between C, S, S+, and R? I'd love the same for transmission shift characteristics. The "quicker" and "more aggressive" descriptions are not doing it for me. I have a GT C Edition 50.
The difference is in the throttle maps, the shift points and the specific pressure build up in the transmission when engaging the clutches, but I have not seen the actual maps and characteristics published by AMG. I'm guessing they keep it close to their chest and describe it in layman's terms such as sportier, more responsive, quicker and such, which is really what matters at the end.
But in principle the engine modes affect how the engine responds to throttle input as illustrated in the graph below. They affect how much throttle a specific pedal position produces. C has a mapping that looks like the Progressive gray curve. You have to push in the throttle pedal more to get a response from the engine. S+ looks more like the red curve and over boosts the throttle to give the impression the car is faster and more powerful. Race is like the blue curve, giving a linear throttle response, because that's what you want on a race track to exactly control the amount of throttle.
The transmission characteristics are similar. The transmission factors in throttle input, engine speed, acceleration etc. into deciding when to shift. The modes affect this mapping of the various inputs. It also affects the pressure regulator valves in the transmission to produce either a slower more comfortable shift, or a faster more aggressive shift.
Last edited by superswiss; Nov 9, 2021 at 01:30 PM.
O.K. That actually makes sense with my street driving experience. I have been running a custom setting with suspension and stability control in Comfort but the engine in Race. It feels "right" to me but I wasn't sure what was happening in the engine or tranny. The shifts (manual shifting) are always very crisp and nearly instantaneous. I'll keep running it this way unless I hear that there is a negative to being in Race mode. I'd love the actually mapping data, but can live with "nearly perfect feel" . . . haha.
Last edited by AndrewFerg; Nov 10, 2021 at 07:46 PM.
O.K. That actually makes sense with my street driving experience. I have been running a custom setting with suspension and stability control in Comfort but the engine in Race. It feels "right" to me but I wasn't sure what was happening in the engine or tranny. The shifts (manual shifting) are always very crisp and nearly instantaneous. I'll keep running it this way unless I hear that there is a negative to being in Race mode. I'd love the actually mapping data, but can live with "nearly perfect feel" . . . haha.
I use those exact settings in individual mode on the street (suspension and stability control in comfort, engine in race, manual transmission, and exhaust in sport). I can always push the buttons on console to change on the fly, although I rarely do so.
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Engine mode specifications
