Thread: D3 Tdv6 Range Anxiety

The trip computer distance to empty is, at best a guide.
I have run the TDV6 D3 30k with the distance to empty at 0.00.


I also have a Scan Gauge 2 fitted which gives me a real time fuel use reading and an average for a specific trip.
890km trip to work the Scan Gauge averages are around (they vary sightly trip to trip) gives a speed average of around 92kph & 11.1 or 11.2 lt per 100k.


There are only minor towns, a drop from 900 meters to 35 meters over the whole trip & when I stop for 5 minute breaks & a walk-about I don't turn the car off which would make some difference.


Jonesfam

Originally Posted by jonesfam

The trip computer distance to empty is, at best a guide.
I have run the TDV6 D3 30k with the distance to empty at 0.00.


I also have a Scan Gauge 2 fitted which gives me a real time fuel use reading and an average for a specific trip.
890km trip to work the Scan Gauge averages are around (they vary sightly trip to trip) gives a speed average of around 92kph & 11.1 or 11.2 lt per 100k.


There are only minor towns, a drop from 900 meters to 35 meters over the whole trip & when I stop for 5 minute breaks & a walk-about I don't turn the car off which would make some difference.


Jonesfam

Thanks Jonesfam,
I've often wondered what happens if distance to empty gets to 0.0. I have always "assumed" there would be a few more K's in it. I based that on watching distance to empty as the fuel gauge goes down and have noticed that for most of the time the actual number of K's traveled roughly equaled the reduction in k's distance to empty that is until the distance to empty gets down to about 150k's then it seems there is more K's reduced from distance to empty then actually traveled and by the time DTE= around 80-100k's DTE was reducing by roughly 2km's for every Km actually traveled. I've never had the DTE K's below 20, as I didn't want to find out that my assumption was wrong then have to go through the whole bleeding process

I have been getting around high 9's except one someone else drives.
Most time the yellow light is on "cos there is plenty in the other tank"
We have an aux tank but you must pump into the main tank first .....

My trip computer reads consistently 8 to 12% better than actual when not towing but is pretty close when towing 3ton. If into a high head wind will sometimes read slightly worse than actual. Because it is consistent I normally just add 10% and that is pretty close.

Originally Posted by 90 Rangie

My trip computer reads consistently 8 to 12% better than actual when not towing but is pretty close when towing 3ton. If into a high head wind will sometimes read slightly worse than actual. Because it is consistent I normally just add 10% and that is pretty close.

I have found that the actual error between the display and actual is surprisingly consistent. An average error of 13% or 1.3 l/100km. This tells me it is a real calculated value - but one with a bias to look more favourable. Coincidently the error brings the real world consumption to something that looks very similar to the LR published fuel consumption figures.

The range display though is very inconsistent. Generally over states but never by a consistent amount. By comparison my 2008 BMW estimated range is very accurate from full tank to empty tank only changing as the actual average fuel consumption changes up or down over the tank. I generally subtract 100kms on the D3 but it is not consistent.

Mine is optimistic on the computer readout but pessimistic on the gauge. The tank is 82L for the diesel, by the way - I went and checked! When my gauge is reading empty I usually can't get more than about 77 L in, but the range readout will probably still be showing about 100K or so in hand. I never do a long trip in WA without at least one jerry can of diesel with me - I don't have a long range tank. We have LR roof bars which never get removed, and a bull bar, and over the last 5 or 6 years have averaged about 11.8 around town, 13 with an off-road trailer on the highway, and with care on a long run and nothing much on top we get about 9.0 true (with the readout showing about 8.2). There's about a 1L/100 difference between cruising at 100 and 110 km/h - a bit more if there's a headwind. And you can take off at least another litre if we've got kayaks or the Thule box on the roof. Still, compared with most other serious fourbys, I think that's pretty good. My XJ8 does about 14.5 around town if I'm gentle and 17 if I'm not!