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Mk3 1.6Tdci - First 500+ Mile From Tank Of Fuel !!


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#1 tomo2001

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Posted 03 April 2012 - 07:57 AM

Hi

Had my car since end of July last year, now coming up 20,000 miles. This week saw the first reasonable mileage from a full tank of fuel. I managed to squeeze 520 miles out of her and when brimmed again, checked out at 54mpg.

The main difference was instead of sitting on the motorway doing 70mph, I travelled cross country on 'A' Roads doing 60mph.

The previous two tanks were checked at 49 and 48.5 mpg respectively. Incidentally the fuel computer is now showing an average 51.1mpg which is an improvement following the re-calibration work I had done at the dealers on the first service.

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#2 cuke

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Posted 03 April 2012 - 08:12 AM

Hi, it is good that you are getting much better mpg now. Most people fail to understand how much a difference driving at 60mph can make to the mpg than at 70mph...
Chris

#3 tomo2001

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Posted 03 April 2012 - 08:20 AM

Hi, it is good that you are getting much better mpg now. Most people fail to understand how much a difference driving at 60mph can make to the mpg than at 70mph...
Chris


Agreed but driving at 60mph on the motorway just winds people up and HGV's hang on to your tailgate

#4 mitch84

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Posted 03 April 2012 - 09:23 AM

That sounds spot on OP , I have a mk2.5 1.6tdci and I'm averaging 54mpg

#5 salsheikh

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Posted 03 April 2012 - 12:21 PM

most of my journeys are short stops so never get any decent mpg, low 30's normally.

#6 jimrex

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Posted 03 April 2012 - 12:38 PM

That's awesome! I am currently struggling to maintain 44mpg <_< I find keeping the read-out on instant mpg rather than average helps as you can keep it as high as possible. My car is going in today to have the fanbelt (I think!) replaced... do you think I should have it recalibrated as well?

#7 jeebowhite

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Posted 03 April 2012 - 12:47 PM

the problem with A roads at 60 is that your more stop/start and go/slow than you are on a motorway. So its not always the better option. I prefer motorways to travveling the A roads to work, might cost a few MPG sometimes, but its better for the stress levels.

Plus if I need to get somewhere, I can put my foot down and get there (legally... of course!) where as a country road, you can only go as quick as the tractor in front of you!

#8 tomo2001

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Posted 03 April 2012 - 01:17 PM

That's awesome! I am currently struggling to maintain 44mpg <_< I find keeping the read-out on instant mpg rather than average helps as you can keep it as high as possible. My car is going in today to have the fanbelt (I think!) replaced... do you think I should have it recalibrated as well?


Worth asking the question

#9 cuke

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Posted 03 April 2012 - 04:00 PM

Hi, when trying to obtain the maximum mpg it is always a comprimise between a safe speed and a driving for economy, as per usual. But you cannot expect to maximise the mpg at any speed over 60mph. Its common sense really...
Chris

#10 tomo2001

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Posted 03 April 2012 - 04:28 PM

Hi, when trying to obtain the maximum mpg it is always a comprimise between a safe speed and a driving for economy, as per usual. But you cannot expect to maximise the mpg at any speed over 60mph. Its common sense really...
Chris


Didn't manufacturer's also refer to 56mph as the optimum speed for fuel consumption ?

#11 artscot79

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Posted 03 April 2012 - 09:19 PM

1.6 ti vct petrol i get 505 miles from a tank doing b roads mainly and town driving. thats a brim test over last 3months

shell optimax 1.47.9 litre spent 30quid so 20.2 litres in total and got 216 miles from that with 34 miles in reserve thats a 9.3mile journey mainly flat there then 13.5hrs later doing the return journey 70percent uphill and some town driving on my days off.

#12 tomo2001

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Posted 03 April 2012 - 09:24 PM

1.6 ti vct petrol i get 505 miles from a tank doing b roads mainly and town driving. thats a brim test over last 3months

shell optimax 1.47.9 litre spent 30quid so 20.2 litres in total and got 216 miles from that with 34 miles in reserve thats a 9.3mile journey mainly flat there then 13.5hrs later doing the return journey 70percent uphill and some town driving on my days off.


??

#13 artscot79

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Posted 03 April 2012 - 11:29 PM

simply put i get 505 miles from a tank of petrol so the diesel isnt doing that much more really though its still good my mates seat diesel is doing 40mpg

#14 Pitmonster

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Posted 03 April 2012 - 11:55 PM

Didn't manufacturer's also refer to 56mph as the optimum speed for fuel consumption ?

Not quite.
For comparison purposes all cars are tested at a constant 75mph (120 kph), a constant 56 mph (90 kph) and a simulated 'urban' route (stop-start city driving)

Of those 3 the 56mph test is the most economical, but it does not mean that it's the most economical speed to drive ALL cars at.

That 'magic speed' that gives the best possible economy depends on so many factors including torque and gearing, and is different for all cars.

You may even find that by increasing your cruising speed by a few mph you are then able to change into a higher gear, and thus lower your revs and fuel consumption.

#15 artscot79

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Posted 04 April 2012 - 02:23 AM

very true i get better mpg at 65 to 70 than 50 for some reason

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