Thread: 300tdi vs td5

I really don't think that mechanical V electronic fuel control is a valid argument. I defy anyone with any mechanical nous to repair a faulty fuel pump or injector out back o beyond with the proper sealed room and tooling. Just as the electronic gear would be needing its diagnostic tricky bits.

Originally Posted by Taz

Well dont believe me then. I understand you are basing your comments (that my figures are wrong and there is no way you could achieve 7's) on your experience with your engine, driving style etc. What I dont understand is why some people cannot be open minded and except other peoples experience. My experience is different to yours. Yes I've confirmed my odometer with GPS to be within 2-3% at 95km/hr. I have a 110lt tank and regularly get over 1400km from it on my run to work, which is spent doing 95km/hr for 80% of the time. Look thru the forums on Tdi economy and you can read more details on my figures but I'm not going to repeat it here.

And if you dont believe a Tdi D1 can get into the 7's (lt/100km), then your really going to have a lot of trouble believing the Landrover owner manual which states fuel consumption to be 6.6lt/100 for a manual D1 doing a steady 90km/hr.

Now it's 6.6 L/100Kms, thats better than my wifes fuel injected 1.6 ltr carolla on the hume at 100kmh that got 7.4 ltrs/100km's.

The LR figures you are quoting may have been tested in europe where Diesel is much better quality or if it was in OZ it was deffinatly when there was still sulpher in the fuel to be getting those sort of figures.

I just made a suggestion that your figures needed some tweaking as it is (unless you are using something like LPG fumigation) to get those sort of figures from a 300tdi.

You still havnt answered my question though, Do you have any mods, and do you run LPG.

Without answering those questions then everyone else who has only ever made it into the low 9's at best out of their 300TDI's wont know what the secrate to your absolutly extrordinary claims.

Hi All,
Standard Tdi, automatic, no mods done on the engine, though recently had it's 200,000km service.
Recent trip up to Sunshine Coast I used 82 litres for 1080 kms.
Quick calculation gives me 7.592 litres per hundred kms.
Now, that was pretty much highway driving and after ten years (almost) with the Tdi, I can drive it fairly frugally, but never held anybody up and was overtaking slower vehicles.

Around town (very much stop start) I would likely get closer to 11 litres per 100 kms.

BTW, I run a satnav in the car, so the kms are accurate, fuel usage taken from filling to the brim and then counting the fuel used at the diesel bowser.

Originally Posted by dirty130

I really don't think that mechanical V electronic fuel control is a valid argument. I defy anyone with any mechanical nous to repair a faulty fuel pump or injector out back o beyond with the proper sealed room and tooling. Just as the electronic gear would be needing its diagnostic tricky bits.

The real question is, how often do mechanical pumps die.

I have had inline and rotory pumps have petrol run through them by people who dont look at what they are doing and they are still ok, Ive had them completely swamped in dams and floods and after a quick drain of the fluids and a bleed of the pump and injector lines and away they go.

It's not so much when it will break down it is more if it does, you will have more chance of fixing a mechanical system with basic tools than you will with electronics.

It's not just a question of carrying a soldering iron and some solder with your spanners, there's a whole lot of diagnosis equipment that not even the average mechanic will have to be able to sort half the problems that you COULD encounter.

I get 9 lts * 100k steady @ 110 kph towing a 750 kg trailer.
I know that if I drive @ 85/90 kph the consumption improve dramatically.
Your figures are quite possible if you are not taken off to quickly.
My Disco is manual.
Cheers

mcrover if he says he is getting low 7's why do you find it so hard for him to believe it? Taz says he's checked and rechecked his figures, so what more can he do?

The "now it's 6.6 L/100km's" comment is also unnecessarily rude. He is just quoting from the D1 manual which he has obviously looked up since his previous post where he says LR claim low 7's in their documentation.

If he is getting low 7's then good on him and as LR state that in their manual then it definitely is not an "extraordinary" figure and as it is one that LR themselves stand by.

I would say always choose the 300Tdi, not because of the engine, the mechanical fuel pump or even the economy .. just get it because it's in the Series 1 Discovery, which looks heaps better then a Series 2 !!

To me the Series 2 always looked like it's rear end was too big (the Jeniffer Lopez of the off-road crowd).

Added to that, the 300Tdi sounds mean, the TD5 sounds like it should be owned by somebody dressed in a tweed jacket with leather elbow patches !

Originally Posted by tdiBrad

Hi All,
Standard Tdi, automatic, no mods done on the engine, though recently had it's 200,000km service.
Recent trip up to Sunshine Coast I used 82 litres for 1080 kms.
Quick calculation gives me 7.592 litres per hundred kms.
Now, that was pretty much highway driving and after ten years (almost) with the Tdi, I can drive it fairly frugally, but never held anybody up and was overtaking slower vehicles.

Around town (very much stop start) I would likely get closer to 11 litres per 100 kms.

BTW, I run a satnav in the car, so the kms are accurate, fuel usage taken from filling to the brim and then counting the fuel used at the diesel bowser.

So at best you are getting approx 7.5L/100kms but most of the timw you are getting around 11 out of a stock standard Disco means you are probably averaging around the 8 to 9 at best.

Thats a far cry from 6.6L/100Kms

I no mine needs work, the injectors have done 300,000km's and as I have said it carries a heap of weight as well as has a lot of economy sucking attachments.

I dint know what sort of quality your fuel is up there either as it changes with each fuel delivery at work, some times I will get 1100km's out of about 120ltrs and the next time I fill up I will only get 850km's doing the same sort of driving.

I only ever get fuel at work as it is part of my package and I am in charge of getting the pumps checked and calibrated twice a year.

We use Woodruffs petrolium for our supplier who get their supplies from different refineries but the thing in Vic is that most of our diesel is supposed to come from 1 refinery but I dont know who it is but I know it changes regularly.

It changes with the machines as well, the fairway mower with good fuel will get about 11 or 12 hrs out of 20ltrs but will only get 7 to maybe 10 hrs out of 20ltrs with the crappy fuel.

Im happy for you guys if you can get those sort of numbers but I dont believe it is possible if you were really touring, loaded up with the appropriate mods and the like.

I love the 300tdi but I dont believe it is that good.