Thread: Spinoff question: Your fuel consumption per 100km

Thought I'd put in an opinion as well - it's all the rage these days. My D4 uses an INDICATED 8.8l/100km and a calculated 10l/100km (average over 8000km) combined. This is in a D4 2.7.

As to the 10k greater cost, that's returned with much greater resale - when I was shopping for a D3/D4 it was usually around 6k more for a diesel with up to 40,000 more km on them, and if the km's were close, 10 - 12k more for the diesel. So, even with the stupidly higher cost of diesel over petrol, come sale time it will be a better equation than the purchase price indicates.

Still, from reading the starting post for this tread, I would think you should be able to get better than 15l/100km on the highway - I'd be carefully checking tyre pressure, alignment, and droping 10kph off the speed where it's not going to upset other drivers. To give an idea of how much you'll save by the 10kph slow down, many years ago I had an RB30 Patrol that would give 12l/100km at 100/110 on the highway, yet at a 90/100 run would do 9.8! 2l/100km saving while not adding too much extra to the trip - we cheated for that though on long trips by reducing the stops for the kids by half (where 30min stops down to 15min stops). Sometimes we got places faster (time, not speed).

Have to admit I'm a little dismayed at the D4 TDV6 2.7's economy compared to my D2 TD5 - sure the D4 is very comfy and goes a lot harder, but I sure miss knowing I can get 900km from a tank on a trip (albeit with a tad larger standard tank) I mean, 9.5L/100km!
Though it's around town where the D4 really finds ways to chew fuel compared to the D2...

Does anyone know if the diesels loosen up and/or improve their economy after a few thousand kms, or do we just learn to drive them more nicely?

Mine definately loosened up but the D3 will use more fuel than the D2 unless you drive carefully. But it is too tempting to use the extra grunt.

On my old (07) RRS TDV8 I was getting and 11.7 per hundred with 75000 k's on the clock. That number would move down a little if I did a long drive on the freeway. Have had it down to about 10.5 on a gold coast to the snow trip.
The new one is sitting at about 14.5 at present but I expect that will improve as the car has only done 1800 k's so far

tdv8 will easly get into the 9s, around town easy 10, the best iv seen out of a tdv8 was 7.8 the other week,

they just use there power so well, so lazy and down low,

yet to see how a 4.4tdv8 gose tho,

Fifi
It sounds like one issue could be fuel, if using 98 octane it will benefit definately, also it will have to be used over a period of time, not just the 1st tank.
That will give you a bit more grunt and hopefully you use the throttle less.
Which brings me to the next point, try taking off smoothly and plan your driving inadvance. Slow down earlier if approaching tarffic and or lights etc.
Coast to them as the fuel is shut off on coast. You are sitting up nice and high so use that to your advantage and plan ahead. when resuming from your coasting which also has be done in gear, never select neutral, press down slowly and know how much to accelerate as too much will be a waste as you just need to brake again.
Also, see if you have the air-con ON or OFF?
Air con will chew up more fuel, if its a nice day, just put natural venting on or open a window, can make up another 5% easily.
Last but not least, check tyre pressures as recommended by your tyre dealer or your handover book.
My wifes friend ran hers on 60psi which was crazy and I told her that but she swore that it gave her better economy. That was till one just exploded on a hot day at a supermarket car park.
Everyone thought there was a shot fired.
All the other tyres were badly worn in the centre and are also stuffed. False economy in other words plus dangerous.

Wheel alignment is another beauty but throttle control and knowing how things work and why is biggest culprit.

Save driving and have a great day.

Hi all,

My 350km old D4 2.7 is currently sitting on 11lts per 100 around town with no freeway work. It had 35.8lts per 100 when I picked it up!!

Mind you I seam to be driving it like a grandma atm due to I guess running her in, or it maybe due to the fact that it is my first ever auto - never thought that day would come!!

I'm hoping that 11 around town will be the norm an 9-10 on the open road. It will be interesting to see what the 265/70/17's will do to economy

Phil

Originally Posted by OzAd4x4

Hi all,

My 350km old D4 2.7 is currently sitting on 11lts per 100 around town with no freeway work. It had 35.8lts per 100 when I picked it up!!

Mind you I seam to be driving it like a grandma atm due to I guess running her in, or it maybe due to the fact that it is my first ever auto - never thought that day would come!!

I'm hoping that 11 around town will be the norm an 9-10 on the open road. It will be interesting to see what the 265/70/17's will do to economy

Phil

Phil, if you are using computer read out, I think you will find it optimistic to the tune of about 1.5l\100k

cheers ken