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Join Date: Jul 2003
Location: Denver, Colorado
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951 Fuel Economy

Thinking about an upgrade. My son would like to take over my 86 NA. Looking for a 951 to replace it. Weighing the pros and cons, and one of the questions I had was fuel economy of the NA vs the Turbo.
Old 10-06-2003, 08:10 AM
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30 mpg on the way to the track, less than 10 while on the track. Back to 30 on the way back home.

YMMV.

The turbo has taller gearing than an NA, which is good for mileage, but the tall gears are less pleasing in heavy traffic. Even first gear is quite tall. Fifth is useless below about 70 mph.

Last edited by Dantilla; 10-06-2003 at 08:42 AM..
Old 10-06-2003, 08:40 AM
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How do you manage to go down to less than 10 mpg on the track?
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Old 10-06-2003, 09:47 AM
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30 mpg on the track??
I think you mean at about 60 mph,constant speed,no accelerations...Well,30 mpg should be the very minimun.
I usually get about 11-12 liter/100 km (about 21 mpg),usually at the highway but driving fast,at peaks of about 130 mph,about 90 mph average.So assume about 20 mpg if you want to have some fun sometimes.

Im very pleased with the 951 fuel economy...Not sure about city economy,never tried,but very unconfortable to drive in the city due to longest years,as they noticed here.
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Old 10-06-2003, 10:31 AM
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I average high 20s for the highway and high 10s to low 20s for mixed.

I have a heavy foot, but the car does have an open exhaust, tight engine, new plugs/oxy sensor, etc.
Ahmet
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Old 10-06-2003, 10:22 PM
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19 around town driving easy, 17 boosting some.
26-27 at 65 mph interstate driving.
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1988 951 Alpine White / Burgandy
Profec B spec II EBC,HomeBrew Chips, WideFire HG, Tial 38mm, Magnecor Wires, Koni Rears, Adj Rear Droplinks, Zeitronix WideBand.
Old 10-07-2003, 03:56 AM
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nearly 30 on the freeway at between 70 and 80 mph
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Old 10-08-2003, 12:15 AM
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30+ on the highway in hot weather with windows up and AC on. This is with cruise set on interstate (70 mph), no fooling around, and no town driving at all.

I get about 23 around town if I don't use the boost. Our town driving is pretty easy with few lights and steady movement of traffic. I think I get about 10 mpg on the track. It's an econobox :=).
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1986 951
2002 SLK32 AMG
1987 328GTS
2011 528i
Old 10-08-2003, 02:50 AM
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more than 30 mpg???if my calculations are good,this is less than 8 liter per 100 km! I think better than in the manual! Is it good or is it good??

Ive never tried to cruise at 70 to see if its correct...the boos t is to much temptation to me
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Old 10-08-2003, 10:27 PM
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I'm not kidding about the mileage nor am I exaggerating. Every month I drive from TN to GA to go to Road Atlanta. On that trip which has some small towns with stop lights, some small mountains to cross, and some two lane passing, I get 27+.

The 30+ only happens on interstates with no happy foot. I have an MAF and some head/intake mods and some exhaust mods.
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1986 951
2002 SLK32 AMG
1987 328GTS
2011 528i
Old 10-09-2003, 03:12 AM
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I can attest to the near 30 mpg figures. the '51s here in the states have 20 gallon fuel tanks and I can go almost 600 miles on a full one if conditions are good. (i.e. freeway driving, no leadfoot, flat terrain, no stop-and-go, etc.) that works out to better than 30 mpg (if you subtract the reserve)

just one more reason why these cars are so awesome
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Old 10-09-2003, 12:35 PM
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