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Djelibeybi

Fuel Consumption (merged topic)

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Aloha tech-heads. :)

Ok, so I have an NA XR6 and its only done 750kms so far -- but the fuel consumption is sitting at 15.6l/100km and I thought it should be around 12l/100km. Is it just adjusting and I should wait until I've done like 1500km or should I be worried?

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How hard are you driving it?

Are you sitting in peak hour traffic?

I assume the 15.6 is from the trip meter? Have you verified that after filling up?

At only 750kms, consumption will still be up a little. The XR6 I drove was showing 19.9l/100km. It had 130 kms on it but most of that was made up of moving around the dealership and a couple of test drives.

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Djelibeybi, l reckon that's pretty high unless you are practising to be Peter Brock.

Canberra should be an easy place to get decent economy, not a lot of stop/start driving and plenty of highways.

If the figure you quoted is from the computer and not actual, then like superoo says, l would start filling the tank, tracking kms and working it out myself before l got concerned. l have found the trip meter in my car can be nearly 0.5lt/100 high consistently, maybe you got a dodgy one and are getting readings that are upto 3lt/100 out? :nugget:

But that's sort of consumption l think is definetley too high if it proves to conrrect.

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My BA XLS Ute auto is using 13.2 around Canberra but was in the high 14's for the first 1500klm's.

The strange thing is that my 5.4 manual has done 700klm's and is using 12.4 around town(it might have something to do with my foot being heavier than my wifes) and a trip to Braidwood on the weekend returned 10.8(with 2 adults and 3 kids + luggage) without driving for economy so I'm pretty happy with it.

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My XR6T has around 2000km on the clock, the first tank ran at 12.1ltrs/100km, and now it runs about 12.5-13.5 (My foot is being pressed down a little firmer now). To Clarify these figures, they are not off the computer.. I find the computer to be about 0.8ltrs higher then the actual. Also this driving was a mix of city and hwy

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I'm hoping its the fact that the first thing I do every morning is drive up Hindmarsh Drive (fairly steep incline). I'm trying to organise a trip up to Sydney soon, so I can see how it does on the open road.

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I've just done 2,000 ks in mine (this morning) and it is sitting on 14.7 on the trip metre - haven't measured the real thing but allowing for errors, it still seems pretty high.

Haven't re-set, but I don't think all that sitting in the parking lot called the M5 when I first got it helped much...

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is it a manual or auto? The auto does 1800RPM the manual does 2100RPM at 100km/h. I have a BA XR6 manual which I just clicked over 3000kms this morning. I am finding that I am averaging 13lt/100kms by the computer but when I fill up the tank I'm putting in 50-55 liters per 500ish kms. I don't think that's to bad but get a few kms on it before you start to worry.

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Jelly,

I've got 4300km on my Auto N/A XR6 as of this morning, and the trip computer is telling me that I'm averaging 13.9 litres, though this was up to 14.8 before I put about 650km of freeway driving in over the last 1000km.

Also according to the trip meter readings, I'm getting about 500km per tank - it drops below that with lots of City driving, and goes above it with lots of Highway driving, which if I've done the maths correctly correlates to about 13litre fuel consumption.

In the Sydney heat over Summer, I've been doing a considerable amount of driving with the aircon operating, so I realise that's the main reason it's a lot higher than the quotes figures, but I'm of the opinion that the N/A 6 is just about as thristy as the standard V8 now, due to the weight jump in the BA range.

Coming from a small four, my alarm at this jump in consumption figures is obviously exaggerated over that felt by someone who traded in an older Falcon, but I'm not convinced by all the people who keep telling me 'it'll get better once it's run in'.

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I have a BA XR6 manual which I just clicked over 3000kms this morning. I am finding that I am averaging 13lt/100kms

Yeah, I'm at 4800kms and I bounce between 13 and 13.1. That's the turbo in the manual.

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Well, its still a damn site better than my Explorer, but I'm only averaging 450km per tank (or thereabouts). I really need to take it on a long highway trip and see if it drops.

Same though, I'm using the aircon almost continously too, so that's probably having a negative effect.

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one thing to look at is the amount of fuel your filling up with. I just did 500 odd kms and filled it up as much as possible with the guage showing below empty and DTE reading 10kms and it only too 55lts. There 13 litres I'm not touching. just something to look at. maybe carry a jerry can when you try it. Mines getting the fuel guage looked at tomorrow

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Sorry mate, but the auto is also around 2100 RPM @ 100 KPH

Mine has done 1500 k's and is only starting to feel a bit less restricted in the engine/trans. I was getting 14.5 for the first 1000-1200 km, now it is around 12.5 -13 for mixed driving

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Does anyone know what type of fuel (Optimax, premium or plain unleaded) the xr8 requires? I forgot to ask my dealer (not sure many salesman understand anyway).

Also, anyone have any idea yet of expected consumption? Not that it really matters to me, I am just curious.

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Not sure about the consumption, but the recommended fuel for XR6 Turbo and XR8 is Premium Unleaded (I.e. Optimax, etc).

My leasing company has also requested that I only use Optimax for my NA XR6 and have covered the additional expense of that fuel.

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Turbo and XR8 will run on standard unleaded. The only difference is Turbo won't make 240kw on std. unl. XR8 is rated at 260kw on std. unl. This is what Falcon brochure advises. GT will require premium due to higher comp.

They claim XR8 will use 12.5l/100km.

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Quite surprised at the "official" XR8 consumption figures. Mind you, there's no reason that all that technology can't be put to some good use to improve efficiency! The old Windsor was hardly a sipper on anything but dead straight freeway...

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Not sure about the consumption, but the recommended fuel for XR6 Turbo and XR8 is Premium Unleaded (I.e. Optimax, etc).

My leasing company has also requested that I only use Optimax for my NA XR6 and have covered the additional expense of that fuel.

Optimax is a 98 RON fuel - you only need 95 RON for the XR6T (any premium). The difference between 95 and 98 RON is usually 2 or 3 cents.

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The difference between 95 and 98 RON is usually 2 or 3 cents.

Not around sydney it isn't . Any way got a load of normal unleaded couple of weeks ago and didn't really see a difference makes me a bit sceptical sometimes of what I am really buying . I think the xr8 is 9.5: 1 comp u can easily run standard unleaded no problem. Fuel consumption who cares when u got V8 power...

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Turbo and XR8 will run on standard unleaded. The only difference is Turbo won't make 240kw on std. unl. XR8 is rated at 260kw on std. unl. This is what Falcon brochure advises. GT will require premium due to higher comp.

They claim XR8 will use 12.5l/100km.

How do they test for this fuel consumption figure?? I'd suggest unless you're doing a heap of highway driving, you won't see 12.5.

Isn't the XR6T also listed as 12.5??

Nope the XR6T is 11 point something on the windscreen sticker I seem to remember.

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