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Engineer here. So I totally understand being interested in the numbers. I've been recording all my fill-ups on my '09 C4S since I bought it in January.
I drive mine to work, and the commute is about half city and half highway. Here's a screen shot from my phone app, showing all sorts of stats regarding my fuel usage.
Additionally, I know I got 10.4 mpg during the PCA HDPE in October.
That's cool. I just downloaded an app (Fuel Buddy- Android) and will start logging my data. The app also allows you to add maintenance, etc., which I've been meaning to record electronically for my cars.
Originally Posted by ADias
In reply to the OP:
Way lower than that and on open freeways rarely above 20. PAG bends its back backwards to lower gas mileage. I guess they know their new customers... Sports cars are usually 2nd or 3rd cars and increasing their design complexity to make them competitive with Corollas is a consequence of the stupid political/social climate we are living.
Porsche claims 27 MPG on the highway, and 21 combined, which is pretty good considering these are sports cars. It's interesting that nobody on this thread so far seems to be getting these numbers.
I average about 17.5 mpg overall with my 2007 C2S. 22 mpg when cruising in 6th @ ~80 mph. About 24.5 mpg when cruising in 6th @ ~70 mph. Horrible gas mileage when I'm city driving because I can't help but accelerate hard whenever I get the chance.
...
Porsche claims 27 MPG on the highway, and 21 combined, which is pretty good considering these are sports cars.
Yes, 27MPG is doable, at steady speed (up to 70MPH) on a flat freeway. But is that exciting? I can see perhaps doing that when driving 200 miles down to a track day and back, but other than that I would have no pleasure to drive a sports car on freeway traffic, on flat land, at constant speed in top gear. For that I have other cars. Nobody, IMHO, should buy a sports/performance car and expect high gas mileage, but perhaps that's not what the Porsche customer is today.
I am also a very "curious" guy. I have apps and stats for almost everything in my world. I will NOT start tracking mpg for my favorite thing in the world. **used the word thing on purpose as my wife is sitting next to me as I type.
Yes, 27MPG is doable, at steady speed (up to 70MPH) on a flat freeway. But is that exciting? I can see perhaps doing that when driving 200 miles down to a track day and back, but other than that I would have no pleasure to drive a sports car on freeway traffic, on flat land, at constant speed in top gear. For that I have other cars. Nobody, IMHO, should buy a sports/performance car and expect high gas mileage, but perhaps that's not what the Porsche customer is today.
I use my 997 as a daily driver, and you'd be surprised at how practical this car is. Reliable, lots of space (the hatchback on the Targa is great for getting things in and out) and decent fuel economy. Some days it is a little "boring" . But, and it's a big but, I can step on the gas and hit the twisties anytime I want. I can leave work a little early and have fun, or I can just do the boring commute home. My choice, whatever I'm in the mood for.
Not many cars out there that can do all that. The 997 is amazing.
I have a 25+ mile drive to work, and of course, the same home (not always since to work I sometimes take the 45 mile back road option). When cold, I pull in the low 20 mpgs. Once warm I pull a bit over 30 mpg. For the commute, I average 27 mpg. On long trips where the motor stays at temperature I average 30+ mpg if I stay below 75 mph. Above that speed the mpg drops, but not by a lot. Commute speed is an average of 60+ mph. But the whole point is lowering the mpg. Today on a coastal run I was barely 16 mpg. It was an excellent day!
BTW ... 2010 C4S with PDK. Figures come from 30K miles in the last 14 months and an engineer's critical view of numbers and performance.
Not concerned, just interested. I'm a scientist by training...
Originally Posted by Q 997.2 C4S
Engineer here. So I totally understand being interested in the numbers. I've been recording all my fill-ups on my '09 C4S since I bought it in January.
I drive mine to work, and the commute is about half city and half highway. Here's a screen shot from my phone app, showing all sorts of stats regarding my fuel usage.
Additionally, I know I got 10.4 mpg during the PCA HDPE in October.
LOL . Leave it to the engineer to have stats! Just kidding.
Another scientist here. I'm getting low-mid 20s on highway. Don't commute, so can't say about city driving. Of course, extensive use of the Sport+ tends to reduce MPG, but increase SPM (smiles per mile)!
T
Last June a group of us took a drive from the San Francisco Bay Area through the Sierras up to Oregon and back. This was a mix of highway and some nice fun stuff that was third gear at near red line. The attached shows the trip totals.
Engineer here. So I totally understand being interested in the numbers. I've been recording all my fill-ups on my '09 C4S since I bought it in January.
I drive mine to work, and the commute is about half city and half highway. Here's a screen shot from my phone app, showing all sorts of stats regarding my fuel usage.
Additionally, I know I got 10.4 mpg during the PCA HDPE in October.
How do these numbers match/mismatch with the on-board trip computer?
Engineer here. So I totally understand being interested in the numbers. I've been recording all my fill-ups on my '09 C4S since I bought it in January.
I drive mine to work, and the commute is about half city and half highway. Here's a screen shot from my phone app, showing all sorts of stats regarding my fuel usage.
Additionally, I know I got 10.4 mpg during the PCA HDPE in October.
Originally Posted by Bruce In Philly
How do these numbers match/mismatch with the on-board trip computer?
Peace
Bruce in Philly
What app is that?
I'm also curious to see if the computer is close to those numbers. My calculated MPG at fill up is also .5-1.5 mpg less than what the computer tells me. I get similar results on the wife's Toyota too.
I'm also curious to see if the computer is close to those numbers. My calculated MPG at fill up is also .5-1.5 mpg less than what the computer tells me. I get similar results on the wife's Toyota too.
Yeah, that's why I'm wondering if its possible to Calibrate the system. However, I did a quick check of the manual, and didn't seem to find anything related to that.
I'm also curious to see if the computer is close to those numbers. My calculated MPG at fill up is also .5-1.5 mpg less than what the computer tells me. I get similar results on the wife's Toyota too.
I use the iOS Gas Cubby app. I think it was $1-$2. Well worth it. It also tracks all my service records and sends me maintenance reminders.
Sorry, but I don't know if the onboard computer is accurate on mpg, since I rarely look at it. I just use my app to get an idea of averages.
My best was a 4 hour trip with few cars in the way to cause me to change speed too often - I averaged 65+ mph (which means a lot of time around...well you know...) and 28 mpg. So the car excels at all sorts of things - even long stretches of otherwise boring highway; that's OK with me.
Around town, it varies mostly with my mood between 12 and 17. The car will use some gas if you ask it to.
Note, that owners of the 997.2, benefit from 15% less fuel consumption, across the board, with direct injection engine as compared to the previous model. This, is stated by Porsche.
I achieve 23mpg, city/highway, in my base 997.2, but I drive like your grandmother.
