Switching C/S while driving
Super Member
Joined: Dec 2007
Posts: 648
Likes: 1
From: Seattle
C-300, XC70, Wrangler
the cool thing about S mode is that when u accelerate and slow down, it keeps your RPM around 3500-4000 so it gives you your full torque and almost all of your horsepower ready at any given moment so when you push the gas the car flies. The S mode also does stiffen up the suspension, trust me I feel it! braking is also improved in S mode because it downshifts quicker and keeps the car in higher rpms under braking so it uses more engine braking hp to slow down the car. S mode feels much better than regular, but it comes at a price(your MPG).
Maybe I'll have to try that 3500 rpm, but then again, I don't want to be stopped doing 120 ....
Junior Member
Joined: Feb 2009
Posts: 63
Likes: 1
2016 C300
I love accelerating in this car, often hitting anywhere from 4000 to 6000 rpm, but as already mentioned, it does lower your MPG somewhat. I do mostly city driving, and if I don't accelerate constantly then I average around 17 MPG. Since my last fill up at the gas station, I've been experimenting a bit and accelerating more often. My MPG has dropped to around 16.x . The car growls all the time too! 
Super Member
Joined: Nov 2008
Posts: 604
Likes: 29
From: SA
2008 C350-Sport-AMG-Active Agility Pack(Not reliable) +Izuzu KB6 3L(It seems Reliable)+Mazda
S & Close proximeties
It may hurt if you have a narrow curling driveway up to garage and you used to use C mode. In S-Mode you may fly through your garagewall if brakepadel is not close to your heart.
