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#3440578 - 07/30/14 12:34 PM Re: Post your rpms at 70mph [Re: Patman]
Mykl Offline


Registered: 02/08/13
Posts: 1377
Loc: Texas
Originally Posted By: Patman
Actually, a lot of C7 owners are getting over 40 MPG highway under perfect conditions!!! My best in my C6 is 37.0 MPG, so I totally believe I could get well over 40 with a C7 since it has the extra gear (7 vs my 6) plus the ability to run on only 4 cylinders too.


Can you average that over an entire tank? It seems pretty reasonable that a Corvette should get decent fuel economy... it surely doesn't take that much horsepower to push an aerodynamically slippery car with a relatively low weight at 70 mph. But it still doesn't seem likely that you could get 37+ at that speed over 350 to 400 miles in a repeatable way. 29-32 I'd absolutely believe though.
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'10 Volkswagen GTI
'07 Toyota Camry XLE V-6

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#3440586 - 07/30/14 12:47 PM Re: Post your rpms at 70mph [Re: synthetic_crazy]
Blokey Offline


Registered: 02/21/03
Posts: 917
Loc: GA, USA
2000 Acura 3.2TL:

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"Drive safely, because the life you save... might be mine" - James Dean, Sept. 1955

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#3443716 - 08/02/14 10:01 AM Re: Post your rpms at 70mph [Re: synthetic_crazy]
Bamaro Offline


Registered: 08/03/03
Posts: 1109
Loc: Balto.
A little under 2500 in Cobalt
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2009 Cobalt
1970 Camaro (original owner)
2009 Civic
2001 Escape
2014 Mazda3

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#3460838 - 08/20/14 10:31 PM Re: Post your rpms at 70mph [Re: synthetic_crazy]
DavidZ28 Offline


Registered: 10/06/10
Posts: 256
Loc: Atlanta, GA
1984 Camaro 700R4, 3.73 gears 2,400 rpm
1998 S10 4L60, 3.42 gears 2,100 rpm
2000 Sunfire THM125... I have no idea, gf drives this car.
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'98 S10 4.3L M1 HM 10W30 UPF 52 Ultraguard Gold
'84 Camaro Z28 5.0 H.O. QS Defy 10W30, QS5
'00 Sunfire 2.2L Valvoline Maxlife, Purolator L10111

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#3460878 - 08/21/14 12:04 AM Re: Post your rpms at 70mph [Re: synthetic_crazy]
Nick1994 Offline


Registered: 02/19/13
Posts: 1395
Loc: Phoenix, AZ
~2,400 rpms in the Beetle. 6 speed automatic DSG
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2004 VW Beetle TDI 163k
(Yeah it's a chick car but it gets me 40 mpg)

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#3460948 - 08/21/14 05:47 AM Re: Post your rpms at 70mph [Re: synthetic_crazy]
Falcon_LS Offline


Registered: 10/03/08
Posts: 3540
Loc: Kuwait
I've never paid attention to what the RPMs are at 70 MPH, but I know off the top of my head for 75 MPH it's:

Mitsu: 3,100 rpm (4.56 rear axle ratio)
Grand Marquis: ~1,900 rpm (3.08 rear axle ratio)
Envoy: 2,200 rpm (3.73 rear axle ratio)

Not going to be much of a difference for 5 MPH.
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00 Pajero: M1 0W-40/26300-35503
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05 Envoy: M1 ESP Formula 5W-30/51522XP

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#3461846 - 08/21/14 09:17 PM Re: Post your rpms at 70mph [Re: synthetic_crazy]
horse123 Offline


Registered: 09/06/13
Posts: 43
Loc: Minneapolis, MN
2012 Impreza 2.0i 2500rpm or so I believe. Maybe a little less.

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#3462015 - 08/22/14 06:34 AM Re: Post your rpms at 70mph [Re: synthetic_crazy]
chadkiser Offline


Registered: 04/05/12
Posts: 1
Loc: North Carolina
Theoretical since I've never gone that fast in my 1952 Chevy Truck but it'd be 3300RPM. That's with a 3.11 rear end.

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#3462491 - 08/22/14 05:04 PM Re: Post your rpms at 70mph [Re: synthetic_crazy]
y_p_w Offline


Registered: 05/06/05
Posts: 2566
Loc: SF Bay Area
About 2900 RPM in a 2004 Subaru Impreza WRX 5-sp. 3.9 final drive ratio. Hovers right around where the turbo kicks in.

My 1995 Integra GS-R was more about 3350 RPM. Some felt that it could use a 6th gear.

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#3463395 - 08/23/14 09:37 PM Re: Post your rpms at 70mph [Re: synthetic_crazy]
GatorJoe Offline


Registered: 07/05/12
Posts: 79
Loc: Florida
1995 Jag XJ6 4.0L ZF 4HP-24 4-speed Automatic.
2350 RPM @ 70 MPH
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1995 Jaguar XJ6 - 60:40 blend PYB 10W40:30
2003 Ford Explorer Sport Trac - PYB 5W30

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#3463403 - 08/23/14 09:50 PM Re: Post your rpms at 70mph [Re: synthetic_crazy]
dustyroads Offline


Registered: 05/13/13
Posts: 336
Loc: upstate NY
2011 taurus sel = 1750 @70 mph

2012 volvo truck = 1600 @ 70 mph
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2011 Taurus sel

2012 Volvo big rig with D11

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#3488597 - 09/20/14 04:25 PM Re: Post your rpms at 70mph [Re: synthetic_crazy]
97tbird Offline


Registered: 05/09/03
Posts: 8580
Loc: Fayetteville, NC
The 330Ci Bimmer (perf. package, which has a different gear ratio than the regular 330ci AFAIK):
(NOTE: I think the ACTUAL speed is 2 MPH LESS than what the speedo shows - that's how it's calibrated; I forgot to compensate for that)

AT 70 MPH:


AT 80 MPH:


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Sufficiently Caffeinated...
Cars: 1997 Thunderbird v8 sports(sold), 2003 Elantra GLS, 2005 BMW 330Ci ZHP, 2014 Mazda 6 Touring

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#3489731 - 09/21/14 11:19 PM Re: Post your rpms at 70mph [Re: synthetic_crazy]
asand1 Offline


Registered: 12/16/12
Posts: 835
Loc: Oregon coast
~2800 in the Maximustang, but i drive 60 (5 over limit).
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1996 Maxima 300K
2008 Uplander 80K

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#3489733 - 09/21/14 11:29 PM Re: Post your rpms at 70mph [Re: synthetic_crazy]
MetalSlug Offline


Registered: 07/24/10
Posts: 2172
Loc: vicksburg ms
I dont have any pix, and I have no idea how to upload pix from my phone to here, but recent trip I went, 90mph at 2.1k RPM on my expedition.
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05 Expedition 5.4L 3v Super Mobil 5w20 FL820s

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