C5 MPG auto vs. Manual

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Jan 29, 2007 | 01:16 PM

Abbacabba

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Joined: Nov 2003

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From: Columbia TN

C5 MPG auto vs. Manual

I'm starting to look at getting a C5, I want the manual, but the wife wants to know about the automatic.

I was wondering what the MPG savings are if you ride the manual really well.

Jan 29, 2007 | 02:56 PM

slappy3347

Burning Brakes

Joined: Feb 2006

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From: Chattanooga TN

Hello, I drove my MN6 to Nashville and back and got about 31 mpg. I get around 18-20 around town. Pretty good in my book. Hope this helps

Jan 29, 2007 | 03:01 PM

Vetteman Jack

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I've gotten as high as 33.5 mpg from my manual, and usually get 30+ taking it easy.

Jan 29, 2007 | 03:13 PM

robert123

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Joined: Dec 2005

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From: Chicago Illinois

27.5 going from georgia to chicago at 80-85mph.

Jan 29, 2007 | 03:14 PM

robert123

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From: Chicago Illinois

with the 6 speed.

Jan 29, 2007 | 03:17 PM

7898VETTMAN

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Joined: Aug 2006

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From: NEW WINDSOR NY

24 Mpg In My 98 Last Year From Ny To Carlisle With The Cruise At 80 And 21 Or So Around Town With The Auto.

Jan 29, 2007 | 03:18 PM

nickolbag

Le Mans Master

Joined: Aug 2005

Posts: 5,130

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From: Winter Park FL

I got 36 mpg from SC to NJ. Intake/Headers/Exhaust only. I usually averaged around 26-28 normal driving.

Jan 29, 2007 | 03:19 PM

pentavolvo

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Joined: Nov 2004

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From: Dyer IN

Cruise-In IX Veteran

when my C5 was brand new I got 30 on the highway goin to Canada and back with easy driving crusin at about 75-80 with some WOT pulls out of toll booths in my auto.

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Jan 29, 2007 | 03:30 PM

The Spark

Melting Slicks

Joined: Aug 2002

Posts: 3,334

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From: Midland TX

Autos get a few mpg less than the MN6 on the highway.
The 6th gear really drops the rpms at cruise.

I get about 31-32 in the MN6. Got around 30 with the A4.

Jan 29, 2007 | 04:31 PM

#10

scott88

Instructor

Joined: Apr 2006

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From: fenton mi

go manual

autos suck=

.02

Jan 29, 2007 | 04:33 PM

#11

steve8

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Joined: Nov 2004

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From: Central Ma

Much more fun miles per gallon with the six speed.

Jan 29, 2007 | 04:42 PM

#12

AU N EGL

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Joined: Sep 2003

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From: Raleigh / Rolesville NC

We have one of each.

The MN6 would get low 30s on the highway, 30-31.5 at 80 mph.

the Auto was 28-29 mph at the same speeds.

Both had the 3.42 rear axle

Jan 29, 2007 | 04:51 PM

#13

mph1972

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From: Newberry FL

Cruise-In VIII Veteran

St. Jude Donor '07

In my highly modified A4, I got 28.7 mpg on my trip from OKC,OK to Charleston, SC and that isn't bad at all.

BTW, my auto doesn't suck!

Jan 29, 2007 | 04:52 PM

#14

Tmyz 2K

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Joined: Jan 2007

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From: St. Charles MO

combination of about equal half city and half highway with occasional spirted driving, 20... M6

Jan 29, 2007 | 04:57 PM

#15

Jim2003

Safety Car

Joined: Apr 2004

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From: Louisville KY

I get 18 to 22 in town with my MN6. I usually get 29 to 30 on the highway. But I have gotten 33 and 34 when I am not running as hard. I believe the MN6's were rated slightly higher milage than the A4's.

The driver will make the biggest difference.

Jan 29, 2007 | 05:01 PM

#16

6pac

Racer

Joined: Jul 2004

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I got 17.8 mpg with a 98 6spd half highway/city (I took it easy on the highway putting it in 6th at 80 mph). A few quick take offs in the city. Is it better to be in 5th at 80 mph or 6th at that speed for maximum fuel economy. Another question: Say you are coming off the freeway in 5th to an on ramp. Do you leave it in gear until before the car comes to a spot then press the clutch in or is it better to put it into neutral and coast along the off ramp? To maximize fuel economy and which is better for the engine.

Jan 29, 2007 | 06:47 PM

#17

jarsdad1

Drifting

Joined: Jan 2006

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From: Philadelphia PA

Manual = slightly better mpg; Auto = much better marriage.

Jan 29, 2007 | 07:09 PM

#18

Rodster21

Burning Brakes

Joined: Aug 2004

Posts: 810

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From: Inland Empire CA

I get 30-31 hwy and about 18 or so in the city. MM6

Jan 29, 2007 | 07:15 PM

#19

65GGvert

Team Owner

Joined: Jul 2006

Posts: 22,200

Likes: 4,187

From: Kannapolis NC

Quote:

Originally Posted by scott88

autos suck=

.02

Just like politics, some people have the same answer no matter what the question. There's not a lot of difference either way, mostly because you can't help revving in and between gears with the MN6. As said, most of the answer is in the driver.