#46: Re: Totally Gobsmacked Author: Edward, Location: In the garagePosted: Wed Dec 29, 2010 2:22 pm ---- I got 60mpg from a 1.4 HDi 206 without even trying. I think more than 78mpg could be achieved with a little care.
That amount you put back in is the amount you used?
Not unless you filled up to brim at the start and then again at the end of the trial otherwise you wouldn't know when to stop filling.
Also It's not accurate to use the fuel gauge as a guide as you couldn't hope to get better than within half a gallon or more which would screw the results. Don't forget I was after an accurate figure.
Anyone wanting to do an accurate check on mpg should try to do a distance of at least 150 miles, the higher the mileage done the greater the accuracy will be.
The first bit is obvious, of course you have to brim it twice.
How does doing more mileage give a more accurate MPG, all it actually does is give you an average.
I do fuel load calculations pretty often at work, my method is pretty accurate but this is because its taken over the same road over and over again in the same conditions. How accurate do you want to get, just fuel the bloody thing, work out a rough mpg and drive it, its not that critical.
Yes the first bit is obvious but not to t1mmy, OK so more mileage gives you a better average then and finally I will be as accurate as I want to be thanks
#48: Re: Totally Gobsmacked Author: MrBSI, Location: What's it to you? ? ?Posted: Wed Dec 29, 2010 3:14 pm ---- Trip computer retrofit FTW
Let the engine ecu & BSI work out the real mpg for you
#49: Re: Totally Gobsmacked Author: t1mmy, Location: ReadingPosted: Wed Dec 29, 2010 6:24 pm ---- Am I losing the plot here? Let me give you an example.
I get in my car tomorrow, the tank is 3/4 full. At this point I reset the trip computer. I drive to and from work as usual for a few days. Before the light comes on I decide to put some petrol in. I decide to go crazy and not fill up but put 20 litres in, I know this as it says on the pump and on the receipt! I then note down the mileage off my trip computer.
This must leave me with all the stuff I need to figure out exactly my average consumption for the miles I have done. No need to brim it or anything!
#50: Re: Totally Gobsmacked Author: Jonno, Location: Boston/Spalding LincsPosted: Wed Dec 29, 2010 6:27 pm ---- has this thread really got to four pages
#51: Re: Totally Gobsmacked Author: lofty, Location: Near ManchesterPosted: Wed Dec 29, 2010 7:17 pm ---- Without running the car empty there is margin for error I guess.
I have a question, how accurate is the low fuel warning light? Is it around 30 miles left in the tank when it comes on and how precise are the sensors that govern it?
You could fill to brim and note down the miles covered on seeing the light come on for the first time and continue to use that as a marker?
Am I losing the plot here? Let me give you an example.
I get in my car tomorrow, the tank is 3/4 full. At this point I reset the trip computer. I drive to and from work as usual for a few days. Before the light comes on I decide to put some petrol in. I decide to go crazy and not fill up but put 20 litres in, I know this as it says on the pump and on the receipt! I then note down the mileage off my trip computer.
This must leave me with all the stuff I need to figure out exactly my average consumption for the miles I have done. No need to brim it or anything!
Ok so you put 20 litres in what does that tell you, only that you put 20 litres in it doesn't mean that you used 20 litres. It doesn't relate in any way to the mileage you covered.
You drive, you fill up, even knowing your mpg you can't change the fuel prices and unless your willing to change cars over it, it doesn't really matter?
#54: Re: Totally Gobsmacked Author: namgaj, Location: Chasing Ash, Addaz and Lee........... hopefully catching Addaz and havin fun :PPosted: Thu Dec 30, 2010 3:14 pm ---- Fuel prices FTW say I, put fuel up to £2.30 a litre and price half the motorists off the road= clear roads= WIN
So what if you have to pay a lil more for food and s**t
#55: Re: Totally Gobsmacked Author: continentalgt, Location: Paignton DevonPosted: Fri Dec 31, 2010 6:54 am ----
PUG91 wrote:
8O
You drive, you fill up, even knowing your mpg you can't change the fuel prices and unless your willing to change cars over it, it doesn't really matter?
Know what you mean just trying to do a comparison with the petrol gas guzzler I sold where the best I ever got was 26mpg
#56: Re: Totally Gobsmacked Author: mjsroofing, Location: south walesPosted: Fri Dec 31, 2010 7:03 am ---- so this thread has taught us not to fill your tank only put 20 litres in check millage, prices go up and down, you only get an average, more mpg is beter than less and a hdi does more mpg than a gti, have i missed any thing. oh and do it on a full tank or 3/4 or even when teh light is with 30 miles left.
#57: Re: Totally Gobsmacked Author: MrBSI, Location: What's it to you? ? ?Posted: Fri Dec 31, 2010 7:15 am ---- BEEP BEEP BEEP
FUEL LEVEL LOW on mfd & low fuel light comes on
You brim the tank, reset trip computer & trip mileage
You use the car & after it gets past 300 miles wait for the process to repeat.
I'm happy with 32mpg average, the way I drive the car that's bloody good
#58: Re: Totally Gobsmacked Author: mjsroofing, Location: south walesPosted: Fri Dec 31, 2010 7:24 am ---- but what if you have a half litre differnce between resets, or the price has gone up or down, but if you only had half a tank the car would weigh less and would be better on mpg, what if you're doing urban driving not rurule driving would be accurate enough, you could loss 0.5 mpg if you take the spare wheel out.
#59: Re: Totally Gobsmacked Author: MrBSI, Location: What's it to you? ? ?Posted: Fri Dec 31, 2010 7:27 am ----
mjsroofing wrote:
but what if you have a half litre differnce between resets, or the price has gone up or down, but if you only had half a tank the car would weigh less and would be better on mpg, what if you're doing urban driving not rurule driving would be accurate enough, you could loss 0.5 mpg if you take the spare wheel out.
Light comes on, I fill the tank up & reset the trip's, that's good enough for me.
I also like having the spare wheel, its really helpful if you have a blowout / puncture.
#60: Re: Totally Gobsmacked Author: mjsroofing, Location: south walesPosted: Fri Dec 31, 2010 7:30 am ----
MrBSI wrote:
mjsroofing wrote:
but what if you have a half litre differnce between resets, or the price has gone up or down, but if you only had half a tank the car would weigh less and would be better on mpg, what if you're doing urban driving not rurule driving would be accurate enough, you could loss 0.5 mpg if you take the spare wheel out.
Light comes on, I fill the tank up & reset the trip's, that's good enough for me.
I also like having the spare wheel, its really helpful if you have a blowout / puncture.
i'm only having a laugh mate, so many coments on this thread, it's mad, yeah i do the same with out the trip, i just remeber the litres and millage and use the online calculator and hay hay its a good average.
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