Interesting Fact about 6th Gear in Automatic c350 transmission
Thread Starter
MBWorld Fanatic!
Joined: Aug 2007
Posts: 1,914
Likes: 5
LOADED 08' C350 & 14' GLK-350 Diamond White (P1, MM, AMG Pkg, Ln Trkng, Htd Sts, Keylss Go)
Interesting Fact about 6th Gear in Automatic c350 transmission
So I had a 2009 c300 loaner car and I noticed that while it was slower, it was more responsive on the throttle than my 2008 c350.
After getting my 2008 c350 back, I played with the gears a bit to see if I could receive similar results...
Here is what I noticed:
Cruising the highway at 70 mph in "D" or standard automatic mode, the RPMs are right about 1900-2000.
Cruising the highway a 70 mph in "D6" or the top gear of the semi-automatic mode, the RPMs are right about 2200-2300.
In "D6", I noticed the car was quicker to accelerate to 75 when I hit the gass than in "D".
This doesn't make sense though really, because in both cases, the car is in 6th gear, right?
I think that maybe when in "D6" semi automatic mode, the car's ECU is more responsive and quicker to give gas???
What do you guys think? Anybody else notice the difference in RPM's between the two 6th gear methods????
After getting my 2008 c350 back, I played with the gears a bit to see if I could receive similar results...
Here is what I noticed:
Cruising the highway at 70 mph in "D" or standard automatic mode, the RPMs are right about 1900-2000.
Cruising the highway a 70 mph in "D6" or the top gear of the semi-automatic mode, the RPMs are right about 2200-2300.
In "D6", I noticed the car was quicker to accelerate to 75 when I hit the gass than in "D".
This doesn't make sense though really, because in both cases, the car is in 6th gear, right?
I think that maybe when in "D6" semi automatic mode, the car's ECU is more responsive and quicker to give gas???
What do you guys think? Anybody else notice the difference in RPM's between the two 6th gear methods????
Super Member
Joined: Dec 2007
Posts: 648
Likes: 1
From: Seattle
C-300, XC70, Wrangler
Are you sure? I think that the auto will settle into 7th whenever it can, to save fuel. If you are cruising at 70 in D and push the shifter left, does it then say D6? If so, you had been in 7th. Had you been in 6th, it would now say D5.
MBWorld Fanatic!
Joined: Jun 2008
Posts: 2,073
Likes: 85
From: San Francisco, CA
2017 E300
no, dont forget this car has 7 speeds for automatic.
so when your in D, your really on 7th while cruising on the freeway. thats why when you move the shifter to the right to do the manual mode, it goes to 6th...
so when your in D, your really on 7th while cruising on the freeway. thats why when you move the shifter to the right to do the manual mode, it goes to 6th...
Thread Starter
MBWorld Fanatic!
Joined: Aug 2007
Posts: 1,914
Likes: 5
LOADED 08' C350 & 14' GLK-350 Diamond White (P1, MM, AMG Pkg, Ln Trkng, Htd Sts, Keylss Go)
doh! i forgot! but I guess the reason I forgot, was that because you cannot go into "D7" and can only go to "D6" in semi automatic???
Thread Starter
MBWorld Fanatic!
Joined: Aug 2007
Posts: 1,914
Likes: 5
LOADED 08' C350 & 14' GLK-350 Diamond White (P1, MM, AMG Pkg, Ln Trkng, Htd Sts, Keylss Go)
Please DELETE this thread MOD
MBWorld Fanatic!
Joined: Jun 2008
Posts: 2,073
Likes: 85
From: San Francisco, CA
2017 E300
lol no you can still go into 7th. the car automatically puts itself into the gear that is infront of the one your actually in. say your in 5th, it will go into 4th when you put it into manual mode. if your in 7th, then it puts it into 6th. you can then move the shifter to the right to shift up when needed, all the way up to 7th
Trending Topics
Thread Starter
MBWorld Fanatic!
Joined: Aug 2007
Posts: 1,914
Likes: 5
LOADED 08' C350 & 14' GLK-350 Diamond White (P1, MM, AMG Pkg, Ln Trkng, Htd Sts, Keylss Go)
lol no you can still go into 7th. the car automatically puts itself into the gear that is infront of the one your actually in. say your in 5th, it will go into 4th when you put it into manual mode. if your in 7th, then it puts it into 6th. you can then move the shifter to the right to shift up when needed, all the way up to 7th
D6 is the highest it goes numerically
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
MBWorld Fanatic!
Joined: Feb 2004
Posts: 3,986
Likes: 6
From: SEATTLE WASHINGTON USA
'08 C300 Lux Barolo Red Beige Leather P2 MM 18" wheels '84 944
D7?
You didn't. When there is a gear number displayed, that simply indicates the highest gear the trans will upshift to. With no number shown, it will progress to 7th gear. BTW, if you are poking along at 120mph, you cannot downshift to a gear that will over rev the engine no matter what you do with the gear lever.
MBWorld Fanatic!
Joined: Jun 2008
Posts: 2,073
Likes: 85
From: San Francisco, CA
2017 E300
When there is a gear number displayed, that simply indicates the highest gear the trans will upshift to. With no number shown, it will progress to 7th gear. BTW, if you are poking along at 120mph, you cannot downshift to a gear that will over rev the engine no matter what you do with the gear lever.
Super Member
Joined: Oct 2008
Posts: 519
Likes: 50
From: Mississauga
GLA45 AMG, GLC43 AMG
I have never seen D7
when in top gear and I move it one down it will show D6, move it up it will show D.....
just a side note - if your in some of the lower gears, 2-3-4 and so on and you move the shift lever to the right and hold it, it will go to the top most gear "D" automatically...which will put you back in auto shift mode once again....
MBWorld Fanatic!
Joined: Sep 2008
Posts: 1,331
Likes: 9
From: Delaware
2004 Mazda6, 1993 RX7
Manually shift up, and you will see D5, D6, then just D (7th) as there is no higher gear after that, so plain old D is the highest gear, and semi-auto becomes same as full automatic mode.
MBWorld Fanatic!
Joined: Feb 2004
Posts: 3,986
Likes: 6
From: SEATTLE WASHINGTON USA
'08 C300 Lux Barolo Red Beige Leather P2 MM 18" wheels '84 944
7
You thought you were in charge, didn't you?
MBWorld Fanatic!
Joined: Jun 2008
Posts: 2,073
Likes: 85
From: San Francisco, CA
2017 E300
^^ that was never our question. the question was whether theres such a thing after 6th gear in the manual mode.
as i shifting from 1st to 2nd, to 3rd, to 4th, to 5th, to 6th and then finally to 7th. the other scenario is if 6th goes to D. that is all.
as i shifting from 1st to 2nd, to 3rd, to 4th, to 5th, to 6th and then finally to 7th. the other scenario is if 6th goes to D. that is all.
Out Of Control!!
Joined: Nov 2005
Posts: 18,677
Likes: 9
From: OC
a quarter mile at a time
1, 2, 3, 4, 5, 6, D.
The numbers represent the highest allowed gear for the transmission. So, if you select 4, it will change from 1st all the way up to 4th as you accelerate and then hold 4th for as long as possible. Once you hit redline, the car will force an upshift.
Holding the shift lever to the left for 2 seconds will select the lowest possible gear for that given speed. Holding the shift lever to the right for 2 seconds will put you in D.
You cannot select 7, it is D.
The numbers represent the highest allowed gear for the transmission. So, if you select 4, it will change from 1st all the way up to 4th as you accelerate and then hold 4th for as long as possible. Once you hit redline, the car will force an upshift.
Holding the shift lever to the left for 2 seconds will select the lowest possible gear for that given speed. Holding the shift lever to the right for 2 seconds will put you in D.
You cannot select 7, it is D.
MBWorld Fanatic!
Joined: Jan 2008
Posts: 1,321
Likes: 0
C300 Sport/Palladium Silver on Black/P2
However, in the USA, we don't have full manual capability, so that is why we never see 7. We get a dumbed down car here.
MBWorld Fanatic!
Joined: Sep 2008
Posts: 1,331
Likes: 9
From: Delaware
2004 Mazda6, 1993 RX7
It also means, when you have beed upshifting in manual mode, that you have gone from 6th gear (D6) to 7th gear (D) with that last shift, and ( if you don't bump the shift knob again) you have returned to automatic mode.
