30 mpg on Carrera 3.2 possible?

[JBaez]

I just took a round trip from Austin to Dallas and back and racked up about 500 miles. The interesting thing was I was seemed to be averaging about 30mpg. I said to myself, "that can't be right." Has anyone ever heard of mileage like this on a 3.2 carrera? Mine has 126k and running all stock. Mixed AC driving and at night windows and sunroof open. I just can't believe this thing returns that kind of mileage. Anyone have a similar experience?

[masraum]

It wouldn't suprise me if you drove in a way to get decent mileage. I drove in such a way that I would expect pretty horrible mileage, and I managed 23. Driving at 60-65 and accelerating reasonably (something I was never able to do), I wouldn't at all be surprised to get 30mpg. I think some folks here have reported that before for 3.2L cars.

[rnln]

I say no way.

[rteague]

got over 30 mpg on recent trip all freway 80 mph and less 3.2L stock. r.t.

[88-diamondblue]

Before my rebuild and going to a 3.4 I would get 28-29 mpg doing 85-90 driving on the interstate. Now I am down to around 24mpg. I believe it...

[78P930]

Is it a RoW or US?

[JBaez]

I have a US car and speed was averaging about 70 to 75 mph

[rusnak]

I go from here to the coast regularly on the weekends. I set the cruise control for 70-80 and average 32+ mpg in the winter, around 30 mpg in the summer. My 911SC got in the mid 25 mpg range, and the 914-6 gets around the same as the 911.

There has been lots of material published on this, including several test articles. The mileage is due to the pulsed injection, which also gave Porsche a huge advantage in the 80s in Le Mans and F1. I think there was a thread posted here too on the subject, and most 3.2 owners reported similar mileage.

[skinnerd]

On my trip from Houston out to my eventual home in Portland, my 73 RS replica with 3.2 Motronic was averaging right at 30-31 mpg while cruising at 70 mph on the highways.
Definitely possible....

[KCPSG]

As Diamondblue stated, I was able to get 28 - 29 mpg on interstate maintaining speeds of 75 - 85 mph when my car was mostly stock.

Definitely possible IMO

[jevvy]

easy, I have had well over 30mpg driving like a granny on a long journey once (had a REALLY bad hangover!)

[AlienTekniX]

I have 2.2 that has been stripped down. I think I got 30 MPG on last trip. I am not 100% about my calculation cuz my sender and guages are OLD but I can't be far off. I had a hard time believing it until I read this post. BUT there is almost nothing stock about my motor.

[UK Carrera]

My UK spec 3.2 regular achieves 30mpg+ on a run at motorway speeds.

Of course UK gallons are slightly bigger.

[Zef]

Sure it's possible...mine give me around 28 on cruise at 65 mph...

[JeremyD]

When I picked up my bone stock 3.2 in Chicago I averaged 28 mpg at 70 mph. At 93 mph average, it dropped down to 23 mpg.

Now with the 3.4 I average 18 in the city and 22 on the highway - of course I'm also always sticking my foot in it too..

[gerry100]

last week, on a 290 mile trip about about 1/3 interstate ( 5th gear) and 2/3 two lane country roads ( 4th-5th with stops) I averaged over 25mpg in my '86. 30mpg for all interstate driving very possible.

Filled her up in Watkins Glen and averaged 11mpg for the next two days.

talk about versatility.

[Milu]

It's easily possible if you're cruising.

The killer for milage (and engines) is short, stopstart journeys in heavy traffic.

[JTL]

Best I ever got was 25mpg. That's about 500 miles per tank of fuel.

[88911coupe]

I'm just under 25 mpg on the highway. Maybe I need to get a tune up or something.

[defcon65]

Yes, if you drive conservatively without punching it to pass you can get 30 mpg from a 3.2 Carrera.