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 Posted: Wed Dec 29, 2010 2:22 pm |
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Joined: Feb 08, 2010
Posts: 7045
Trade Rating: +5
Location: In the garage
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I got 60mpg from a 1.4 HDi 206 without even trying. I think more than 78mpg could be achieved with a little care.
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| 2001 GTi 138, Bilstein Sprint dampers, H&R springs, 21mm Peugeot Sport torsion bars, 22mm rear ARB, Peugeot Sport Group A wishbones, 283mm discs, Goodridge stainless hoses, Maniflow 304 grade 4-2-1 2.5" manifold and system, 200 cell cat, Richard Longman head, 45mm Jenvey throttle bodies, 9.5mm TB spacers, 90mm air horns, Jenvey throttle linkage, Jenvey fuel rail, Aeromotive and Goodridge fuel fittings and braided hose, ITG sausage filter, Radtec custom radiator, Piper Ultimate Road cams, Piper vernier pulleys, Omex 600 ECU. Saxo electric PAS pump, Vibra Technics engine mounts. Samco coolant hoses, TTV steel flywheel, 4.76 final drive ratio, 307 CC 180 ratios. 2019 BMW 530i. 2017 Mercedes C300 convertible. | |
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Posted: Wed Dec 29, 2010 3:07 pm |
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Joined: Sep 23, 2010
Posts: 84
Trade Rating: 0
Location: Paignton Devon
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| EdCherry wrote: |
| continentalgt wrote: |
| EdCherry wrote: |
| 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 
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Posted: Wed Dec 29, 2010 3:14 pm |
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Joined: Nov 27, 2010
Posts: 11520
Trade Rating: +10
Location: What's it to you? ? ?
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Trip computer retrofit FTW 
Let the engine ecu & BSI work out the real mpg for you 
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Posted: Wed Dec 29, 2010 6:24 pm |
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Joined: Feb 07, 2010
Posts: 377
Trade Rating: 0
Location: Reading
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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!
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Posted: Wed Dec 29, 2010 6:27 pm |
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Joined: Feb 09, 2010
Posts: 575
Trade Rating: +5
Location: Boston/Spalding Lincs
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has this thread really got to four pages 
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| Le Mans Blue BMW 120D coupe
Ex 1.6 sport owner | |
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Posted: Wed Dec 29, 2010 7:17 pm |
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Joined: Feb 07, 2010
Posts: 696
Trade Rating: 0
Location: Near Manchester
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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?
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| 206 GTI
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Posted: Thu Dec 30, 2010 2:31 pm |
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Joined: Sep 23, 2010
Posts: 84
Trade Rating: 0
Location: Paignton Devon
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| t1mmy wrote: |
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.
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Posted: Thu Dec 30, 2010 3:06 pm |
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Joined: Mar 14, 2010
Posts: 376
Trade Rating: +3
Location: Shropshire
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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?
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Posted: Thu Dec 30, 2010 3:14 pm |
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Joined: Feb 07, 2010
Posts: 1645
Trade Rating: 0
Location: Chasing Ash, Addaz and Lee........... hopefully catching Addaz and havin fun :P
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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 
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| 4.0 V8 S-Type Jaguar
Image removed due to size | |
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Posted: Fri Dec 31, 2010 6:54 am |
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Joined: Sep 23, 2010
Posts: 84
Trade Rating: 0
Location: Paignton Devon
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| 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
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Posted: Fri Dec 31, 2010 7:03 am |
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Joined: Nov 28, 2010
Posts: 322
Trade Rating: 0
Location: south wales
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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.
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| Mark
03 206 1.4 hdi 3 door 187k
02 transit 100 280 196k
04 renault Laguna 80k
09 transit 115 300 43k. | |
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Posted: Fri Dec 31, 2010 7:15 am |
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Joined: Nov 27, 2010
Posts: 11520
Trade Rating: +10
Location: What's it to you? ? ?
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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
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Posted: Fri Dec 31, 2010 7:24 am |
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Joined: Nov 28, 2010
Posts: 322
Trade Rating: 0
Location: south wales
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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.
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| Mark
03 206 1.4 hdi 3 door 187k
02 transit 100 280 196k
04 renault Laguna 80k
09 transit 115 300 43k. | |
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Posted: Fri Dec 31, 2010 7:27 am |
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Joined: Nov 27, 2010
Posts: 11520
Trade Rating: +10
Location: What's it to you? ? ?
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| 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.
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Posted: Fri Dec 31, 2010 7:30 am |
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Joined: Nov 28, 2010
Posts: 322
Trade Rating: 0
Location: south wales
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| 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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| Mark
03 206 1.4 hdi 3 door 187k
02 transit 100 280 196k
04 renault Laguna 80k
09 transit 115 300 43k. | |
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