What kind of fuel mileage are you getting in your Porsche ?

[rdane]

'95 3.6 with a 915 tranny in a lwt '79.

28 to 30mpg on the highway is common above the marked speed limit.
Everyday driving into and around town 25 mpg is easy.
Track time can go down to less than 10 mpg.

[Kroggers]

Don't know, and do not want to find out - Fuel costs to much here in Sweden as it is, and keeping two cars and a motorbike on the road during the summer is really costing some!!! I just want to drive the SC with a smile, and not think about what it is costing me

[Bob's Flat-Six]

Originally posted by rick-l
1988 3.2 I like the price of premium last june. None of these trips are higway or conservative.

Miles___Ä Miles_Cost $/Gallon_Gallons___ Date____MPG
61203 310.2 $29.57 $1.75 16.808 16-Dec-04 ---18.44065
61378 174.2 $18.77 $1.90 9.833 24-Jan-05 ---17.79835
61658 280.4 $30.93 $2.04 15.097 8-Mar-05 --- 18.54898
61982 324.0 $40.45 $2.37 17.005 5-Apr-05 --- 19.05553
62180 197.6 $23.33 $2.28 10.193 27-Apr-05 --- 19.42658
62555 374.7 $37.92 $2.11 17.897 22-May-05 --- 20.95530
62776 221.1 $21.90 $2.07 10.532 31-May-05 --- 20.97986
62952 176.7 $18.89 $2.23 8.436 17-Jun-05 --- 20.86098


Look what happened when i rebuilt the brakes in May

Look's like something was dragging. I had a bad master cylinder
causing just a bit of brake drag. I'm sure it was having the same effect. Not to mention the HP loss. Low tires will do the same thing.

[petrolblue83911]

83 sc, ssi, 2in 1 out exhaust,

-26-28 highway at 75-80

-20-22 city

[KNS]

Between 25 and 27 mpg on the Highway. I don't want to know what it is around town.

[wholberg]

1987 TurboLook Carrera, completely stock.

17.5 - 19 in town (never above 45 mph)
26 - 27 on highway (65-70 mph)

91 - 93 octand gas and driven daily.

My mileage went up 3mpg all around after running 2 bottles of Techron through it and changing the oil to Mobil 1 15W-50.

[1982911sc]

Just filled up today.....
17.5 MPG mix of hard city and aggresive highway....usually run 94 Sunoco, Mobil 1 15-50 OIL at least this was my last fillup...sometimes get closer to 20...with more highway.

[dean]

14.7 mpg. The only bad thing about a turbo.

Dean

[porsche356a]

Yikes!

About 16mpg (or less sometimes) in bumper to bumper traffic/idle traffic during my 6.1 mile commute. Damn commute takes 40 mins.

Did 25+ mpg on a trip to Montana once...

Any suggestions?

Fresh 87 3.2 - Twin Plug, 10:5:1, 964 Cams, Backdate Exhaust, Steve Wong Chip, 92 Octane.

Sigh.

S.

[stlrj]

Been playing with my air flow meter, larger plug gaps, Mopar ignition cables and injectors, a taller 5th gear in my late 915 gearbox resulting in 23 mpg in town and 30+ highway cruising @ 75 mph.

Recent roundtrip from the bay area to Reno, Carson City, South Lake Tahoe and back, 465 miles (my odometer said 474 miles but I know it's off by 2%) on 15.4 gals of reg. with my a/c on and some bumper to bumper traffic in Sacramento.

Primary reason for these mods was for more low end torque and throttle response which I got, but the mileage was the icing.

Love that DME.


Cheers,

Joe
74 911 w/86 3.2

[RSBob]

Recently switched to sticky rubber and lost 2 MPG, but gained in cornering. Life is a series of trade-offs. If you use yours as a daily and want better MPG you may want to look at harder tires.

[bigrubberjeep]

I think I do about 19MPG with 50/50 hwy/city driving

[Crachian]

been getting 10 mpg flogging my 73E mfi that needs a tuneup

[Superman]

I once got 24.5. Strong tail wind. Averaging about 85 mph. Flat ground. Stock ignition timing and mixture settings.

I generally get about 19 now. Ignition advanced, mixture just a little richer, O2 sensor disconnected.

Who cares?

[k9handler]

hmmm....60 liters will get me 380 - 400 miles (1 tank). Not bad at all.

[MikeWinDC]

My 911 gets around 26 mpg on a mixed loop of city/highway easy/hard driving. The 944 has been getting 35 mpg on a mixed commuting loop with some (when not in the 911) weekend fun.

[JeremyD]

16.5 during engine break in - first 500 miles

[jet911]

around 20 city only, 22/23 city/highway combo and 27 highway (at 80-85 mph).

[Jims5543]

1980CS Targa with 3.6 swap.

27 MPG Hwy cruising at a steady 80 MPH.

20 MPG City driving like I want to.

I could do better in both if I choose to drive nicer but I choose not to.

[svandamme]

3-ish