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Mpg
- Thread starter Deleted member 23024
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don't think mine's 200ps but voted anyway. I've got the petrol 2.0 fsi and in my 4000 miles of having it I have a grand total of 25mpg. . . .
you guys must be so jealous!! haha
i'm bothered, I have some lead in the soul of my shoe or something
but I'm not bothered cos I've budgeted for me caining petrol . . .
you guys must be so jealous!! haha
i'm bothered, I have some lead in the soul of my shoe or something
but I'm not bothered cos I've budgeted for me caining petrol . . .
From what i have read on numerous threads here i would expect the average to be about 27 for Petrol and 43 for Diesel, mine is bang on 43, I can get a lot more and I can definitely get a lot less!
Of course you will always get an oiler with a heavy foot getting worse than a petrol driver with a the touch of a ballerina!
Be interesting to see how it pans out though...
Of course you will always get an oiler with a heavy foot getting worse than a petrol driver with a the touch of a ballerina!
Be interesting to see how it pans out though...
I thought that as well, so took it to be overall average. My Cupra was about 30ish on a run, and sub 24 round town but overall paned out to be about 27 mpg.
For it to be 100% accurate would be too complicated as you could also factor is what octane petrol people use which could have an influence.
Last weeks tank averaged 44mpg on setting #2, this weeks is looking like 38.4mpg, still got 2 days to go though so who knows.
Just take an average, I know full well I can get well over 50mpg if all I do is my commute to work but all the little journeys and weekends etc take it down to 43 which is what I put... If everyone puts in their 'real world' figures not the best they ever got when coasting downhill with a following wind then it will be interesting to see.... I reckon I can get +30%-50% more mpg on any run against a Petrol FR....
Hi,
Ive noticed that when you let the car roll on a hill from stationary and out of gear, the MPG desplay starts to give a figure so i thought id use that to work out the idle fuel consumption.
Was waiting about in the car today near my office and i knew a single track road between farms which is smooth tar and on a slight down hill. I took the oppertunity to do two runs.
I went to the top of the gradient and let the car roll, it settled at 5mph (mabye a bit more, hard to tell so slow) and i let it roll for the 500yds of the road and kept an eye on the MPG desplay. Done it twice, once with AC and once without.
37mpg @ 5mph = 0.135gal/hour = 0.6l/hour (AC off, dipped head lights)
19mpg @ 5mph = 0.263gal/hour = 1.2l/hour (AC on, dipped head lights)
A higher speed than 5mph would have been more accurate (i dont know how accurate the speed deslay and MPG desp is), but at least i know roughly how much fuel i use sitting in traffic and that the AC causes a doubling of fuel consumption when stationary.
I notice in the manual it says that when stationary the MPH changes to l/hour but it on mine. Although, sometimes i think the manual is for a diffirent car!
Stuart
Ive noticed that when you let the car roll on a hill from stationary and out of gear, the MPG desplay starts to give a figure so i thought id use that to work out the idle fuel consumption.
Was waiting about in the car today near my office and i knew a single track road between farms which is smooth tar and on a slight down hill. I took the oppertunity to do two runs.
I went to the top of the gradient and let the car roll, it settled at 5mph (mabye a bit more, hard to tell so slow) and i let it roll for the 500yds of the road and kept an eye on the MPG desplay. Done it twice, once with AC and once without.
37mpg @ 5mph = 0.135gal/hour = 0.6l/hour (AC off, dipped head lights)
19mpg @ 5mph = 0.263gal/hour = 1.2l/hour (AC on, dipped head lights)
A higher speed than 5mph would have been more accurate (i dont know how accurate the speed deslay and MPG desp is), but at least i know roughly how much fuel i use sitting in traffic and that the AC causes a doubling of fuel consumption when stationary.
I notice in the manual it says that when stationary the MPH changes to l/hour but it on mine. Although, sometimes i think the manual is for a diffirent car!
Stuart
What he said! Add the 240BHP Cupra engine to the list...
Adjust the scale though, as you won't need "Above 35MPG", and "Below 26MPG" is to early to stop. Do something like "Below 20" and "Above 25" for the Cupra, cant see any Cupra drivers breaking the 30's
Those 19" wont help either.... do look nice though!i have the fr 170 and get around 32-33 but i only do urban driving, yet to take her on a run
I shouldnt think anyone who has a Cupra would be bothered about MPG otherwise why did they buy it?What he said! Add the 240BHP Cupra engine to the list...
Adjust the scale though, as you won't need "Above 35MPG", and "Below 26MPG" is to early to stop. Do something like "Below 20" and "Above 25" for the Cupra, cant see any Cupra drivers breaking the 30's
Its a good comparison between the 2 FR's though.
furry td ice
Guest
My 56 plate fr tdi mpg sems to be going down by the day - i had a clear but steady motorway 100 miler at w/e and got a stingy 37 mpg. Outside air temperature seems to make a big difference, (anything less than 5 degrees C and mpg down to mid to late 30s straight away). The absolute best I have had was 46 mpg on an avg 60mph motorway run in the summer but haven't seen 40+ since. I still think i might get it plugged in for a check though. But what a great drive this car is.
Hi,
im not sure what the main reason is but there can be several. When its cold the air is much more dence. Its not much, but at 0C air is 7.3% more dence than at 20C.
According to nasa (who know allot about these things) drag increases propirtiantly with density. So, its 7.3% harder to push the car through the air. Which means more fuel needs to be burned.
However, denser air means each stroke of a cylinder can pull in a larger mass of air.
Assuming normal aspiration (ie. no turbo) At 20C a cylinder with a displacement of 0.5l will contain 0.6025g of air. At 0C the same cylinder can hold 0.6465g of air (or 7.3% more) It will me much the same if you take the turbo into account.
This means more fuel can be burned if you use the extra power avaliable.
Other factors will be, you may have your lights on, heated seats, heated window/mirrors, blower fan on higher, AC on to help demist etc etc.
Another is that the engine block (not nesseserally coolant/temp readout) will be cooler, so too will the tyres, bearings and gears as well as the oils and greases in the engine, gears and bearngs will be thicker which means more power is required to move. Cold tyres are not so efficient when cold (or so ive been told)
If its raining, or has been raining, then some power us used up moving water out from under the tyres so the rubber can get to the road. Also, moving the rain out the way will use some power, not much, but it all adds up.
Hope this give some clues, the fuel has to be getting used somewhere(you dont have a hole in your tank!?)
Stuart
im not sure what the main reason is but there can be several. When its cold the air is much more dence. Its not much, but at 0C air is 7.3% more dence than at 20C.
According to nasa (who know allot about these things) drag increases propirtiantly with density. So, its 7.3% harder to push the car through the air. Which means more fuel needs to be burned.
However, denser air means each stroke of a cylinder can pull in a larger mass of air.
Assuming normal aspiration (ie. no turbo) At 20C a cylinder with a displacement of 0.5l will contain 0.6025g of air. At 0C the same cylinder can hold 0.6465g of air (or 7.3% more) It will me much the same if you take the turbo into account.
This means more fuel can be burned if you use the extra power avaliable.
Other factors will be, you may have your lights on, heated seats, heated window/mirrors, blower fan on higher, AC on to help demist etc etc.
Another is that the engine block (not nesseserally coolant/temp readout) will be cooler, so too will the tyres, bearings and gears as well as the oils and greases in the engine, gears and bearngs will be thicker which means more power is required to move. Cold tyres are not so efficient when cold (or so ive been told)
If its raining, or has been raining, then some power us used up moving water out from under the tyres so the rubber can get to the road. Also, moving the rain out the way will use some power, not much, but it all adds up.
Hope this give some clues, the fuel has to be getting used somewhere(you dont have a hole in your tank!?)
Stuart
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