Fuel Economy on 150 series diesel Toyota Prado

Submitted: Thursday, Jul 03, 2014 at 14:35
ThreadID: 108586 Views:4962 Replies:7 FollowUps:11
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Looking at purchasing a 150 series diesel Toyota Prado gx or gxl, and wondering if anyone has any feedback on fuel economy with this model.

We currently have a 1996 90 series Prado (petrol) and looking to upgrade to a diesel.

We do a fair bit of offroad/outback travel, so fully loaded vehicle with drawers, fridge and roof basket aswell. Obviously all the weight doesn't help the issue and we realise that higher fuel economy comes as part of 4WDing, so that's not the issue!

We aren't so much worried about paying for fuel, we would just like to get other people's feedback on the fuel economy they are getting from this model. Just to get an idea and compare things to see if upgrading to this model is really the way to go.

Any help would be greatly appreciated
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Reply By: Steve77 - Thursday, Jul 03, 2014 at 15:19

Thursday, Jul 03, 2014 at 15:19
Hi Chargegirl76,
I have steel bull bar, driving light, 2inch lift, dual batteries and All Terrain Tyres. City driving I average about 10lt/100km in winter and about 10.8lt/100km in summer - by the readings calculated by the vehicle. I find it doesn't seem to change a lot when doing country driving. My vehicle seems to love sitting at about 80-90km for best economy - could average under 9lt/100km I would think), and starts to noticeably use more fuel at 110km.
Steve..
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Follow Up By: Chargergirl76 - Thursday, Jul 03, 2014 at 15:36

Thursday, Jul 03, 2014 at 15:36
Interesting, thanks Steve. Our current vehicle likes to sit around 90-98km for best fuel economy. Drinks fuel considerably more at speeds above that.
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Reply By: Tim - Thursday, Jul 03, 2014 at 15:45

Thursday, Jul 03, 2014 at 15:45
I am way out west so my driving is either a 30 second trip up town or a few hours on the black top sitting on 120 heading back to the coast. With the roof cage, drawers bull bar etc, my average according to the computer is 11.4 over the life of the vehicle (30K).
If I take the cage off and back off to the 95-100 mark I will get under 10L/100. Its much better then my 90 series TD which was around 14.
Tim
AnswerID: 535384

Reply By: Member - Frank P (NSW) - Thursday, Jul 03, 2014 at 15:46

Thursday, Jul 03, 2014 at 15:46
Hi Chargergirl76,

I have a 120 Series with the same engine as your proposed 150, though yours will have been tweaked for better fuel economy with different injectors and a couple of other things.

I'm set up much the same as Steve77, uses a bit more fuel, about 1L/100km more in each situation.

Out of town we are mostly towing 2200kg and a loaded vehicle with a roof basket and second spare. Average 14's on the highway, 15's to 16's on the dirt with softer tyres, 18 to 19 in the mountains.

With the van behind 90ish kph is an economical cruising speed, 100 is ok, 110+ it gets thirsty.

Cheers
FrankP

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Follow Up By: Steve - Thursday, Jul 03, 2014 at 17:00

Thursday, Jul 03, 2014 at 17:00
Same 120 d4d, steel bar, spotties, always full draws, 2" lift, roof rack (not basket - must take the front facing off - all it does is advertise Rhino and create resistance) dual batts, steinbauer tweak. Around Sydney 12/100 sometimes more sometimes less.

Towing 2000 kg struggle to get below 15/100 maybe take that facing off.

The 150 with same motor is apparently tweaked a bit better but vehicle is, from memory 280 kg heavier.
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Follow Up By: olcoolone - Thursday, Jul 03, 2014 at 19:54

Thursday, Jul 03, 2014 at 19:54
Different injectors....... Not if it's a D4D.
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Follow Up By: Member - Frank P (NSW) - Thursday, Jul 03, 2014 at 20:01

Thursday, Jul 03, 2014 at 20:01
Not so oc1.
The early D4Ds have solenoid-controlled injectors. Later ones, including later 120 series vehicles and all 150 Series, have piezo-controlled injectors. They are different part numbers, specific to VIN.
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Follow Up By: olcoolone - Thursday, Jul 03, 2014 at 21:05

Thursday, Jul 03, 2014 at 21:05
How did you change the injectors when the injector drivers and software for each vehicle is different plus one operates a 16 bit ecu and the later a 32 bit ecu....... The original 120 D4D injectors were non DLC and now supersedes to the DLC version, the 120 injectors are all a solenoid type and the DLC version offers nothing in the way of enhanced performance, the 150 uses DLC piezo type injectors......Not that I know anything about them!
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Follow Up By: olcoolone - Thursday, Jul 03, 2014 at 21:20

Thursday, Jul 03, 2014 at 21:20
Sorry Frank.... Misread your post.

Thought you said you had changed the injectors to a different type.

What i misread .......
" have a 120 Series with the same engine as your proposed 150, though yours will have been tweaked for better fuel economy with different injectors and a couple of other things"

Sorry.
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Follow Up By: Member - Frank P (NSW) - Thursday, Jul 03, 2014 at 21:25

Thursday, Jul 03, 2014 at 21:25
No worries mate. It's so easy to do.

Cheers
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Reply By: jacent - Thursday, Jul 03, 2014 at 17:53

Thursday, Jul 03, 2014 at 17:53
It will be ship loads better on fuel than your petrol prado
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Reply By: andoland - Friday, Jul 04, 2014 at 10:12

Friday, Jul 04, 2014 at 10:12
I have a 150 series GX diesel. I don't bother to check fuel consumption around town, only when we go away on long trips.

Here are fuel figures for a couple of trips. Both are with the vehicle fully loaded up for 3 weeks away from civilisation. It has 265/70 R17 tyres, 2-3" lift, bull bar, snorkel and a large roof back on the roof rack.

Canning stock route trip
Total distance traveled: 10,383km
Fuel used: 1308 litres
Fuel economy: 12.6 litres/100km

On the CSR itself:
Distance traveled: 1788km
Fuel used: 249 litres
Fuel economy: 13.95 litres/100 km

Madigan Line trip
Birdsville to Mt Dare across the French Line:
Distance Travelled: 523km
Fuels used: 93 litres
Fuel economy: 17.8 litres/100 km

Mt Dare to Birdsville across the Madigan Line
Distance Travelled: 770km
Fuels used: 133 litres
Fuel economy: 17.27 litres/100 km

The French Line consumption looks pretty high so I might not have the distance quite right, but the track was very soft and very chopped up. Fior comparison the three other vehicles with me used the following fuel:
French Line
Amorok 84 litres
BT50 90 litres
GU Patrol 113 litres

Madigan Line
BT50 – 154 litres
Amorok – 130 litres
Patrol – 175 litres
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Follow Up By: Chargergirl76 - Friday, Jul 04, 2014 at 14:40

Friday, Jul 04, 2014 at 14:40
Great information andoland, thanks a lot for that. Figures look really good. Amazing to see the simpson figures are basically what we are doing now for normal driving!
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Follow Up By: andoland - Friday, Jul 04, 2014 at 14:57

Friday, Jul 04, 2014 at 14:57
No worries.

We also went from a 90 series Prado to the 150 series, but our 90 series was a diesel.

I love my 150 series, it's a great vehicle - very capable, good on fuel, easy to drive around town (my wife mostly drives it), lots of safety features even in the base model GX. It several steps up from the 90 series in almost every way except for one - despite the considerable extra external size of the 150 over the 90 serires, the 150 series actually has a smaller cargo area. It's much bigger in the front and second row seat area - longer and wider, but behind the back seats in smaller. It's mostly the depth, ie. from the tailgate to the back of the second row seats. However, the 150 series GXL is considerably worse again because of:
- the 3rd row seats folding down making the floor about 100mm or more higher
- the massive intrusion from the 3rd row airconditioner and the 3rd row cup holders.
If you tour with a family and without a trailer like we do then cargo space is at a premium. Therefore I’d recommend that you don’t buy the GXL because you’ll lose a massive amount of space.
We have no problem going away with a family of 4, we’ve just had to learn to pack more efficiently and utilise every bit of spare space.
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Follow Up By: Chargergirl76 - Friday, Jul 04, 2014 at 16:22

Friday, Jul 04, 2014 at 16:22
Yes the petrol is what's killing us, we want to go to diesel to be more economical, but it's also time to upgrade anyway.

We are just starting to look at what's out there now and will see exactly how much space there is, but of course that's an important feature. Luckily for us, for longer trips it's just hubby and I travelling. Kids are old enough to not want to come with us, which is good space-wise! In our current vehicle, for longer trips, we pull out the middle seats and have had a shelf unit made up which we put in there and that helps enormously with storage. We've been told that can be modified to fit a new prado so hopefully that can be done.

Thanks again
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Reply By: Chargergirl76 - Friday, Jul 04, 2014 at 14:42

Friday, Jul 04, 2014 at 14:42
Thanks for the feedback everyone, going out to look at a car on the weekend. Still in the early stages of looking, but good to see how much of a difference it will make. Appreciate all your help and comments
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Follow Up By: Sigmund - Saturday, Jul 05, 2014 at 10:49

Saturday, Jul 05, 2014 at 10:49
Think left field for a moment and look at the Isuzu MU-X.

It wasn't on my short list but I'm glad I added it.
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Reply By: Member - Odog - Friday, Jul 04, 2014 at 19:32

Friday, Jul 04, 2014 at 19:32
Hi, we have the 150 d4d six speed manual, all the fruit, towed cub regal off road, from near Canberra to Perth and back, via Eyre Peninsula , and on way home via south west WA.. Lots of off road towing, through sand, and all the usual stuff. Sat on speed limit, or a little sneaky bit over. We did 10360 km and averaged 13.7 litres per 100 km... Fully loaded... Wife collects rocks, sand, and shells... So think we got heavier as the trip progressed.. Lol. Hope this helps.. Great vehicle, comfy, and goes really well. Cheers Odog.
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