Renault Laguna II - Phase 1 - Engines - Average MPG from 1.9 DCi Engine - Page 26 - Renault Forums :: Independent Renault forum

View Poll Results: What is your avarage MPG?
0-10 MPG 1 0.06%
11-20 MPG 6 0.38%
21-30 MPG 85 5.33%
31-40 MPG 496 31.08%
41-50 MPG 868 54.39%
51-60 MPG 115 7.21%
61-70 MPG 15 0.94%
71-80 MPG 1 0.06%
81-90 MPG 1 0.06%
91-100 MPG 8 0.50%
Voters: 1596. You may not vote on this poll

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post #126 of 374 (permalink) Old 2nd April 2008
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As a thought I am now going to drive the 140 miles home on mixed roads with no radio or anything on , see what I get, (apart from bored silly)

ended up 49.5 !!
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Last edited by Fletch; 2nd April 2008 at 07:27 PM.
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post #127 of 374 (permalink) Old 2nd April 2008
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Can the poll be set to l/100KM? Mine does 7.2 on an urban cycle.
Before 'the problem', I was getting around 47.8 MPG on a mix of driving conditions.
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post #128 of 374 (permalink) Old 11th April 2008
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I wonder what the best motorway speed is for optimum fuel economy. I've only had my Lag II 1.9dCi for about six weeks and I've been experimenting a little on my 50 ml daily round trip to work. I'd say about 46 mls is motorway with a couple of miles on 'A' roads either end. I do a little bit of running around locally at the weekends too. I usually reset the trip data when I fill up.
I started off trying to keep it between 60-65mph for a week or two and was achieving around 48.5mpg. Once I started to drive it a little quicker, say 65-75mph, I'd say there was a slight increase in fuel economy - up to around 50.5mpg.
At the last fill up, some 250mls ago I stuck some of that 'Miller's Diesel Sport 4' additive in the tank and tried to keep at the same 65-75mph on my daily commute. The economy has risen to 52.3mpg.
Hammered it home tonight at 80-ish mph wherever possible and it's dropped by 1mpg.
It will be interesting to see what it is at the end of this tank full, but so far, I think the 'Millers' does have some effect!
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post #129 of 374 (permalink) Old 12th April 2008
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In my experience the on-board MPG calculator is notoriously inaccurate - I believe other members have also found the same.
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post #130 of 374 (permalink) Old 24th April 2008
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Average MPG

Average MPG according to the onboard is worked out since it was last reset. To get an accurate idea of a certain trips consumption reset it at the start and watch. Best consumption for a diesel is not determined by keeping the revs low but how smoothly and slowly the accelerator is depressed in combination to keeping the revs relatively low.
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average , dci , engine , engines , laguna , mpg , phase , renault

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