Renault Laguna II - Phase 1 - Engines - Average MPG from 1.9 DCi Engine - Page 25 - 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 5.32%
31-40 MPG 498 31.14%
41-50 MPG 868 54.28%
51-60 MPG 116 7.25%
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: 1599. You may not vote on this poll

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post #121 of 380 (permalink) Old 2nd April 2008
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Hi Azurael,

I have just got my car back from its service, they changed the glow plugs, injectors, cambelt, filtres, the works, when I drove it back home on the motorway (Southmpton to London), I was a bit naughty and was speeding but got an average of 48 miles to the gallon.

You must remeber although you get better power from a turbo diesel you do sacrifice the consumption to a certain degree, but the consumption is not worring me, my other diesels I had were a lot worse.
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post #122 of 380 (permalink) Old 2nd April 2008
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My dad invariably does about a thousand miles a week, almost all on the motorway, in his company car at the moment and in previous vehicles he's owned himself.

Currently, he has a Mitsubishi L200, which has to be the most fuel inefficient 2.5l TD ever, averaging about 25MPG at 80 on the motorway, I kid you not! He had a Passat Mk.6 2.0TDi PD for a month as a loan car, which had been run in properly and was returning very close to 60MPG! the best of anything so far. Prior to that he had a 1.9TDi Passat Mk.5.5, which did just over 50 to the gallon on the motorway, and before that a Laguna 1.9dCi which was ever so slightly better on fuel (I think it's taken them a while to get PD diesels to be similarly economical to the common rail ones.)

Talking about his own cars, the best was the 306 HDI he had before he went back into working for a company, which returned about 55MPG despite being 1st generation common rail technology - I suspect this was due to it being quite a bit lighter than most of the cars he's had since. He had a Mondeo before that which seemed to do similarly to my current Laguna, although it might've been a bit better round town due to not needing to work it so hard - turbos have got a lot more midrange/bottom-end grunt so tend to do better on fuel in stop/start traffic...

It seems to depend very much on how the vehicle has been run in because I'm seeing massive variations in the same car, and driving style isn't such a factor at M-way speeds.

All murderers are punished unless they kill in large numbers and to the sound of trumpets. - Voltaire
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post #123 of 380 (permalink) Old 2nd April 2008
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Quote:
Originally Posted by Pat K View Post
I reset my mpg computer at the top of a very long hill, knocked it out of gear and hit 97.4 mpg on the way down.
Usually I get between 42 & 47 mpg (50/50 town and A road, 2002 Sportstourer 120bhp, 112,000mls) but as xcusme stated earlier in the thread, I get more miles per tank full of Shell or BP fuel than I do any supermarket fuel and more economy in the summer.

Pat
People seem not to understand if you "knock the engine out of gear" then you are still using fuel on idle, however, if you simply release the throttle, on shut down this doesnt inject any fuel at all. Also, if you want even better consumption, keep your windows closed, ensure your tyres are at the correct inflation, turn off all electrics, stereo, sat nav, heater etc. Obviously air con is the biggest killer of fuel consumption figures.

If I drive like the above then I can get 50+ on the laguna but normally get 42 without doing the above.
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post #124 of 380 (permalink) Old 2nd April 2008
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I think it's a proven fact that above about 55MPH having the aircon on is better for economy than having the windows open, though perhaps that varies by car.

Shame, since I don't have aircon

All murderers are punished unless they kill in large numbers and to the sound of trumpets. - Voltaire
Currently in Azurael's garage:
TEB64 (Cosmic Grey) 2001 'Y' Laguna II 1.8 16v Privilege Tourer (KG0B F4P-770)/TED44 (Odyssey Blue) 2001 'Y' Laguna II 1.8 16v 'Expressionale' Hatch (BG0B F4P-770)
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post #125 of 380 (permalink) Old 2nd April 2008
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Quote:
Originally Posted by Azurael View Post
I think it's a proven fact that above about 55MPH having the aircon on is better for economy than having the windows open, though perhaps that varies by car.

Shame, since I don't have aircon
Wouldnt despute that although even better would be to have windows shut and aircon off
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