Thread: Spinoff question: Your fuel consumption per 100km

Recently come back from a long highway trip, mostly at around 110-115 kph, aircon set to 20 degrees (and on the whole time), some idling with aircon on (it is mid-summer!) while taking notes etc for work. Traveled a total of 1947 km and used 221.5 litres for a trip average of 11.37 per hundred. This is in my 3.0 D4, 33,000 km on the clock, with OL bar & LR raised air intake, but no other bits hanging off it and little load on board. I drive pretty conservatively - and I remain disappointed with this kind of result. I have never been under 10 litres per hundred, and rarely get much under 11 .

A question that occurred to me late in this particular trip - I wonder if the odometer is inaccurate? We all know about the computer read-outs being over-optimistic, and I think most D4s have a similarly incorrect speedo reading - to be doing a real 110 kph (by GPS) I need to sit on an indicated speed of about 115. So, I wonder if this 1947 km of mine might actually be incorrect too? Anyone checked this out? Next time I do a long haul I'll check mine against the highway distance signs over a couple of hundred k's.

A lot of people have been saying that the 3.0 is more economical than the 2.7 but posts of actual usage seem to indicate otherwise.

What makes some think the 3.0 is more economical than the 2.7?

Garry

The official test figures suggested the 3.0 would be about 0.5 / 100 better on average than the 2.7. But like you, I've not seen this coming through in the majority of posts. Some seem to be getting really good figures - well down into the 9s - but others are all over the shop. Indeed, the main thing I've noticed is how much the figures coming in for the 3.0 vary - I know people drive differently, but I don't think this explains the consistent and significant gaps between results in apparently similar driving circumstances. Can't all be down to percentages of lead in the feet, can it?

My D3 2.7Lt was slightly better on the fuel (on a trip) than my current D4 3.0Lt, however when towing the D4 is noticebly better.
Around town, they are much the same.
Cheers, Craig

I have a 2.7 TDV6 D3, and I got an app for my iphone and started recording back in August. On a ~3000km round trip Brisbane to Thredbo it averaged 8.2L/100km (even though the disco reckoned it was doing a lot better than that reading 7.4).

Around town I average about 11L/100km (Disco says about 10), mind you I do drive it pretty conservatively around town.

Interestingly the figures are pretty much the same as my Mazda SP23 - but obviously I put ULP in that, and I could never claim to have driven that conservatively which the tyrepower guy can attest to. Let's just say I don't get too many KM's out of tyres or brake pads.....

Just done Sydney to Mackay rtn loaded, normal highway speed. Indicated average was 9.3 - D4 TDV6 3.0 HSE

OBT

Your D4 must be half army duck!