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#46 Pitmonster

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Posted 11 October 2012 - 07:35 PM

2nd refuel on RoadTrip Lite and it's showing 47.2 mpg.

I'm becoming (more of) a nerd!!!!!

It's addictive!

I find myself trying to always beat my average, and it's also a great tool to check how accurate your trip computer is.

In 16.6k miles since I bought by car 11 months ago I've averaged 50.84 mpg, with a personal best of 55.18. For a car nearing 80k miles they're cracking results.

I love the way my mpg graph has gone steadily upwards (see the white line on this screenshot)
https://dl.dropbox.c...12 20 23 11.png

Even at today's fuel prices I'm running at 12.50 pence per mile which is a huge improvement of the 18-19 pence per mile of my previous car (1.8 petrol Laguna)


Does anybody use any other apps for mpg?

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#47 Scoobimax

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Posted 11 October 2012 - 08:01 PM

Well so far (1refill) I'm @ 13.7p per mile over my 417 miles.

Wished I'd been using the app since I picked the car up in Jan - some 14k miles ago!!!

#48 mobily

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Posted 12 October 2012 - 11:15 AM

Since my last refill I have done 140 miles, all town traffic, short journeys, never getting above 40mph and the trip is showing 28.7mpg. Not too bad for the type of journeys I have done. A diesel car would have conked out by now!!

#49 daveyboy123

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Posted 13 October 2012 - 04:34 PM

i have a 1.6 tdci focus 2005 (DPF) had it about 8 months and no real issues with it, i do mainly town driving but also give it a good run every month.

i have worked out that around town i am getting 30mpg - surely i should be getting more than that??!!!??

i have it booked in for MOT and service and having air filter and fuel filter also replaced. its done 67k miles. will the service and filters mean i will start seeing better mpg?

#50 Pitmonster

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Posted 13 October 2012 - 06:18 PM

Maybe you will see better mpg after tge service, but town driving is always very heavy on MPG - if you look at the official figures it's always the worst of the 3 numbers.

Why is this?
Two main reasons:
1- plenty of sitting still at traffic lights and junctions, using fuel but going nowhere. In MPG maths terms your using lots of G for not very much M
2- plenty of accelerating away from rest. Accelerating is the very worst thing for fuel economy, and in stop-start driving you do a LOT of it. Of course it's not high speed stuff, but it's still the engine fighting to overcome the inertia of a stationary object, and that requires a lot of throttle use. You can't escape the laws of physics.

Any roads where you can cruise at a constant speed and on a light throttle will see your mpg soar.

#51 mobily

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Posted 15 October 2012 - 04:23 PM

I have done some reading which suggests the 1.6 petrol has improved mpg after the engine has done a certain number of miles at decent revs. Would this be true?

#52 DaveRushton

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Posted 15 October 2012 - 05:11 PM

I have the 2 litre diesel i get around 500-550 miles out a tank(I beleive is 53 litres) Thats mainly motorway driving as i drive M5, M42, M40 to work and about 2 miles either side of the motorways.

Not sure on the MPG around 45 maybe.

#53 artscot79

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Posted 15 October 2012 - 07:12 PM

update town only driving in the ti vct has got me 32mpg so i cant grumble

#54 mobily

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Posted 19 October 2012 - 09:18 AM

Update - 300 miles of town driving returned me 31.22 by manual calculation.

#55 daveyboy123

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Posted 20 October 2012 - 11:45 AM

this is what i mean. a 1.6 petrol is returning better mpg than my 1.6 diesel.

what else could be contributing to poor mpg?

even on a run or mainly A Roads and Motorways i only get up to about 40mpg

#56 DaveRushton

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Posted 21 October 2012 - 05:57 AM

Checked on the trip today averaging 51mpg after 350 miles :)

#57 Dave the Dude

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Posted 21 October 2012 - 08:46 AM

this is what i mean. a 1.6 petrol is returning better mpg than my 1.6 diesel.

what else could be contributing to poor mpg?

even on a run or mainly A Roads and Motorways i only get up to about 40mpg

Dave

I am not saying this is the answer but just thought I'd mention it.

I drove various makes of TD cars for years in UK for a living and when I drove them so they went as good(fast) as a petrol version, the MPG was bad. When i drove them like a diesel the MPG was good but it was !Removed! boring. Seeing as all the petrol was paid by my firm, you can imagine what option i chose.

Dave

#58 NorthSussex

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Posted 21 October 2012 - 09:06 AM

As Dave says, it could all be down to your right foot. <_<

#59 gumpy321

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Posted 21 October 2012 - 10:58 AM

I

#60 gumpy321

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Posted 21 October 2012 - 11:00 AM

I once achieved an average of 55.2 MPG from Chadderton to Blackpool once, true story. And this was in my 1.6 Petrol. I was practically in 5th all the way there, and driving at 65 down the motorway.

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