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Hilux Diesel fuel economy


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#1 gregyeppoon

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Posted 27 March 2007 - 08:09 AM

I'm not happy with the fuel consumption of my 3.0 D4D hilux.

Can I get some fuel figures to see if it is normal or crap.

Also has anyone had any problems with the electronics, mine keeps going into limp mode for no particular reason.

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#2 CAP

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Posted 30 March 2007 - 10:55 AM

How old is the Hilux? Still under warranty?

I know you must need it everyday for work, but if it's going into limp mode for no reason at all, there must be some sort of fault with the ecu, the same fault can also be the cause of excessive fuel consumption, so I would take it back to the dealer to be rectified.

#3 gregyeppoon

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Posted 31 March 2007 - 07:39 AM

How old is the Hilux? Still under warranty?

I know you must need it everyday for work, but if it's going into limp mode for no reason at all, there must be some sort of fault with the ecu, the same fault can also be the cause of excessive fuel consumption, so I would take it back to the dealer to be rectified.



Oooh believe me it has been back. About 40 times, they have replaced the injector pump, still stopped and just recently the fuel rail about two weeks ago. As the problem is intermittent I'm still waiting to see the outcome of this fix.

But with the fuel economy there seems to be a big difference between the SR5 auto and the SR manual. In all of the toyota specs and advertising they are supposed to be the same. But in reality the manual uses about 50% more fuel. Either toyota have got there sums very wrong or they are deliberately misleading anyone that buys an SR manual! That's why I want to get more figures to find out what the real story on fuel consumption is.

#4 mohomo

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Posted 03 March 2008 - 12:36 AM


How old is the Hilux? Still under warranty?

I know you must need it everyday for work, but if it's going into limp mode for no reason at all, there must be some sort of fault with the ecu, the same fault can also be the cause of excessive fuel consumption, so I would take it back to the dealer to be rectified.



Oooh believe me it has been back. About 40 times, they have replaced the injector pump, still stopped and just recently the fuel rail about two weeks ago. As the problem is intermittent I'm still waiting to see the outcome of this fix.

But with the fuel economy there seems to be a big difference between the SR5 auto and the SR manual. In all of the toyota specs and advertising they are supposed to be the same. But in reality the manual uses about 50% more fuel. Either toyota have got there sums very wrong or they are deliberately misleading anyone that buys an SR manual! That's why I want to get more figures to find out what the real story on fuel consumption is.


What is your fuel economy? I have a SR Diesel manual (less than 5,000km) and I am only getting ~9 km/liter (or 11.1 l/100km). They advertise 12 km/liter. I have steel tray, and bull bar, which would have some effect, but not much. I drive very conservatively, as I am keen to monitor fuel consumption.
I have heard that the mileage improves as the engine wears-in, but not sure how many kms, or extent of improvement. My first chat with the dealer was that the mileage will improve with kms, but things have stabilised since about 2,000 kms.

#5 bepe

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Posted 27 April 2008 - 08:09 PM

very interesting as I own a 1998 HILUX PETROL 2.7 and drive it very gently and get
10.5 liters/100km
Cheaper to service too
G

#6 SILVABULLIT

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Posted 27 April 2008 - 09:15 PM

Give it about 3000k's before your fuel economy stabilises. Haven't really heard about the new D4D's giving much trouble so as others ahve siad take it back to the dealer and demand a car and tell them you don't want it back till it's 100% fixed.


FYI I have a 99 SR5 dual cab 3.0 diesel with bullbar,canopy,trayliner and a few other extras and am getting fuel economy of roughly 450 to 530 km's to a tank full. (66 litre tank) That is mainly city driving in a lot of peak hour traffic. Highway driving is a lot better with a minimum of 520 to a tank.

#7 Dennis La Varenne

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Posted 22 October 2010 - 07:03 PM

Gregyeppoon,

I am a just-joined member to this forum and I am having the same concern with my October 2009 SR5 D4D manual single cab ute which has 16563 km on the clock. I keep a pretty strict log book of the car's fuel performance as I have done with every vehicle I have owned since 1972. Every day I drive it, I log the kms travelled as well as anything notable about its performance or anything else which needs any kind of attention. My method of keeping tabs on my fuel consumption is to fill the tank to exactly the same visible place in the fuel tank filler pipe (as I have done with all my vehicles) and then calculating fuel used between fills. I usually use the same service station and the same bowser to keep things as consistent as possible.

I have the following aftermarket add-ons - ARB bullbar, LRT replacing the standard tank, canopy on the standard tray, light tow bar, and snorkel. Since October 2009 my fuel consumption has remained in the vicinity of a low of 10.2 l/100km (9.7km/litrre) to a best of 11 l/100km (9.11km/litre) which I regard a very poor when compared to my old 2.8 3L single cab ute with the same accessories which I rarely ran at less than 9 l/100km.

I bought the KUN 26R on the basis that Toyota rated its fuel consumption at 8.3 l/100km. Fuel consumption is my chief concern when assessing a vehicle suitable for my needs. Both my last Hilux and the present one have had aftermarket cruise controls fitted and used whenever I have a steady run on open highways. I drive conservatively which annoys my mates.

My conclusion is that there is something very wrong with the way in which my vehicle pumps fuel to the injectors. The whole principle of the common rail injections system is that it is a much more efficient fuel delivery system. That was why it was invented, and usually, in passenger vehicles, it certainly is. Quite frankly, when I spoke to my local Toyota dealer on the occasion of a recent recall to do with the tail shaft, I did discuss my concerns with the fuel consumption. I mentioned the Hilux brochure stats and he simply said flat out that it wouldn't happen, ie 8.3l/100km. Whilst this figure is perhaps a bit optimistic, I do consider that my brand new vehicle should be doing at least as well as my old vehicle which had nearly 200,000km on a rebuilt motor, and which, right from the time of the rebuild obtained almost the same consumption figure by my method of calculation.

Whether my method of calculation is the most efficient, reliable or correct is not the issue. The issue is that at the very least, it is a consistent method of comparison between the two vehicles over time as well as how my vehicle's performance is changing over time.

I am pretty annoyed about this.

Dennis La Varenne

Edited by Dennis La Varenne, 22 October 2010 - 07:07 PM.


#8 HK1837

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Posted 23 October 2010 - 03:44 PM

Interesting. I almost bought a D4D 2010 SR5 dual cab but after driving it, and then driving the 4.0L petrol with 5spd auto I was sold. SO i'm glad by hearing this that I bought the petrol not the diesel. I have also heard of lots of other problems with Thai made diesels, I think the petrol engines are still Japanese? It now has 4,000kM on it and is averaging 7.9km/l (approx 12.6L/100kM) all city driving and not conservatively. To me this is fantasitic consumption for such a big vehicle, although even with 4.0L it is still underpowered. When it gets a bit older a 6.0L Holden V8 conversion might be on the cards! For the meantime a better exhaust and a piggyback computer with dual map so I can run E85 might be the go.

#9 maccat904

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Posted 06 January 2011 - 08:19 AM

Hi, 3 months ago i purchased a 2009 Dual Cab Hilux with 17800kms on the clock thinking that it would be a step forward in the way of fuel economy and practicality (previous car was a VY SS Ute). But i am quite peeved at the fact that i cant get decent fuel economy out of it. I have a steel tray and a bullbar much the same as any other hilux getting around and now at 27600kms it still wont perform or return economy. One tank of diesel will get me about 500-550kms sitting on about 110-115kph which in my books is not excessive, i could handle this if it had some sort of power. Any suggestions?? Dont really like going into dealers as they just seem to tell you what you want to hear.

Also has anyone heard of a 50%hp and a 40% torque program upgrade for the D4D engine that toyota were meant to be doing?

#10 One-pager

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Posted 06 January 2011 - 02:23 PM

Hi, 3 months ago i purchased a 2009 Dual Cab Hilux with 17800kms on the clock thinking that it would be a step forward in the way of fuel economy and practicality (previous car was a VY SS Ute). But i am quite peeved at the fact that i cant get decent fuel economy out of it. I have a steel tray and a bullbar much the same as any other hilux getting around and now at 27600kms it still wont perform or return economy. One tank of diesel will get me about 500-550kms sitting on about 110-115kph which in my books is not excessive, i could handle this if it had some sort of power. Any suggestions?? Dont really like going into dealers as they just seem to tell you what you want to hear.

Also has anyone heard of a 50%hp and a 40% torque program upgrade for the D4D engine that toyota were meant to be doing?


Hi Maccat, do you have the diesel or petrol variant? 4x4 or 4x4? And what type of roads are you driving on? 550km is about right for the petrol on mixed type of roads.

Never heard of this power boost program you are talking about but I wouldn't hold your breath if I were you..

#11 k_san

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Posted 21 March 2011 - 06:14 PM

I have a 2006 SR Turbo Diesel Hilux, got about 144 000 km up on the clock...from full to empty I have been getting up around the 650km mark...thats with city and high way driving - and not light footed either :P

Also i have a beaudesert exhaust which helps a bit too

Couldnt be happier with the diesel!

#12 k_san

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Posted 21 March 2011 - 06:25 PM

Oh and yeah if anyone was wanting to know, lots of info on newhilux.net regarding performance chips from companies like VMN or ChipIt...have proven to give 30 - 40% more power and torque...there are some problems depending on what year / month model your hilux was made but in general they are very good!

How good are 4WD's :D

#13 terryo

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Posted 03 April 2011 - 08:26 PM

my 2006 diesel returns around 9l/100k on cruising, 13l/100k when towing 2 ton trailer/race car.
it averages about 10l/100k around town with little to no load
never had a single problem since new
i have also been part of team that designed and retro-fitted a Motec onto a D4D. we got almost double the torque, but man did it belch black smoke.
most of the tuning modules we investigated were just rubbish. some simply altered the temp signal to fool it into thinking it was cold. others altered fuel pump pressure by a set amount. none of them did anything with turbo vane change or injection points

#14 aussiematty

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Posted 25 April 2011 - 09:55 AM

I have a 1999 Toyota Hilux 3.0 non-turbo Diesel manual. I'm getting around 9 litres /100km and that can be driving it all day on off road bush tracks. I have an HHO gas system setup on my vehicle though. Without gas fuel consumption is up around 10.5-11L/100km.

Edited by aussiematty, 25 April 2011 - 10:02 AM.


#15 INTSEC

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Posted 04 January 2013 - 05:45 PM

It is quite interesting the figures quuted by Toyota. I used to own a 05 hilux single cab sr 4.0 V6 manual 150,000km with tools,canopy, roof racks etc and was getting roughly 13.0L/100km everytime (Toyota claims 12.5L/100km) and now i have purchased a 07 dual cab turbo diesel model manual with the same setup and now im getting roughly 8.8L/100km (Toyota claims 8.1L/100km). Im not that far from the claimed however i do believe the factory claims to be a bit ambitious

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