Fuel Economy TD5 - Average MPG?

I live in norfook where there arent any decent roads to allow you to maintane a constant, economical speed over long distance. I blanked the egr off some months ago and even though most of my driving has been done recently with lights, heater etc on full belt, I have covered 442 miles and still have a quarter of a tank left. Not sure what it will work out to be until I refill, but I reckon its got to be pretty good considering the maximum journey I have been on is about 45 minutes on A & B roads.
As far as the HGV driver statement goes, I drove artics for 24 years, before and after speed limiters where introduced and although the speed limit for HGV's is still 60 mph on motorways, the reason trucks primarily where limited to 56 was to increase efficiency and cost effectiveness. As an owner driver this does sometimes do your brain in when you are trying to squeeze another few miles in, but it also helps the diesel bill which comes in every 2 weeks....its a bummer not being able to get your foot down, but when your 470 bhp Scania returns between 11-12 mpg at 56, rather than 7-8 mpg when you got your toe down before limiters, you aint gotta be clever to work out whats best.

I have booked mine in for a EGR blanking plate/intercooler flush, and maybe a hyclone fitted. Not sure about the Hyclone yet, can make my mind up on the day. The Hyclone costs £70 fitted, got the booklet on it and sounds a fair idea to go along.

The fuel consumption I was worrying about was'nt £70 of diesel, but £50 @ £1.07 a litre, with 310 miles covered, giving me an average of 30.44 mpg. EGR blanking and cyclone can only improove this surley?

jcbdigger1970 said:

tried that but the bottom bolt will not shift and is ronding off

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Get onto it with the smallest hammer you can find and tap it gently 50 odd times, spray some WD40 or light oil of some type around it. It will break up the rust and let you turn it.

Forget the Hyclone .... snake oil par excellence!

CharlesY

PASTMASTER said:

The only way is to brim it and note the mileage each time. I do this and mine's between 23-24 on average around town driving, but I can make it 35 on a run.
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Whenever I give a MPG figure it is from a full tank to a full tank, noting miles and litres / gallons.

But even the basic gauge check of filling up, doing way over 200 miles, and still showing lots more than three-quarters of a tank of juice, is pretty good anyway one looks at it.

CharlesY

CharlesY said:

In July, my TD5 Disco on cruise at 56-ish mph did 417 miles on less than half a tank of diesel. I worked it out as a lot more than 40 mpg, and on the whole trip nearly 1,000 miles it was well over 35 mpg.

The secret is modest speeds, cruise control all the way, and patience. You'll get there just the same, and not a lot later than the boy racers.

CharlesY

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Hear hear !!!

I always use cruise when ever I can, and a light foot pays £'s in good MPG figures - I regulary achieve 30+ mpg (and I have even had 28 when towing, just by being steady)

Well I have just calculated after the recent fill up that doing short distances around A & B roads, my TD5 has returned 29.8 mpg. That leads me to believe that on a run with cruise engaged, I should be well up in the mid to late 30's (I hope)

paulypaul said:

Well I have just calculated after the recent fill up that doing short distances around A & B roads, my TD5 has returned 29.8 mpg. That leads me to believe that on a run with cruise engaged, I should be well up in the mid to late 30's (I hope)

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I am sure you will.
My td5 Disco EASILY clears 40mpg on a long cruise.

My best run was 417 miles on just. over 9 gallons of fuel. On that same trip of about 1000 miles it averaged 36+ mpg. Can't be bad for a two ton monster!

Just drive carefully and look ahead and be patient ...

CharlesY

CharlesY said:

I am sure you will.
My td5 Disco EASILY clears 40mpg on a long cruise.

My best run was 417 miles on just. over 9 gallons of fuel. On that same trip of about 1000 miles it averaged 36+ mpg. Can't be bad for a two ton monster!

Just drive carefully and look ahead and be patient ...

CharlesY

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Thats exactly it Charles, good fuel economy isnt just achieved by engine tinkering. Something you learn when driving HGV's is to look well ahead to anticipate whats going to happen on the road ahead, avoid hard braking, hard acceleration and keep speed to a sensible average. Also, tyre pressure is an important factor too...if you want to tear about everywhere, ditch the landy and get a vectra or something like that.

Another answer is to get a cheap second car,this might not save costs for everybody but it does for me,I got a k plate fiat uno 1.1 of an old guy i know for £80.it does about 48-50 mpg so is ideal for running around,back and forth to work ect during the week and use the rangerover on weekends.cuts the mileage right down on the rangerover which is also good for cheaper insurance.

2 cars, 2 insurance, 2 tax, 2 maintenence. No thanks, Landy only, when that gives up, get another

Hear Hear - Landy's rule - mine's clocked 93k so far (04 Disco TD5) I just cannot see the point in owning a Landy and it sits on the drive doing nothing just because it keeps the mileage down and uses less fuel !!

Mine gets used everyday, it goes everywhere I could ever want it to, is comfortable and and 30+ mpg is not bad for almost 3 tons of metal.

When it finally gives up (a few years more yet I hope) I'll get another, a Disco 3 if I can afford it, if not I'll look out for another lowewr mileage Disco 2

I agree

You are both right really,I didn't buy my old rangerover to use as a daily driver it was more of a project and as i had 2 other cars and a bike at the time,now i've sold the bike and other cars running around in the fiat allows me to finish off working on the rangerover.Tbh if i a newer landy like yours i wouldn't bother with another car myself.(uness it was somthing fast )

Hi,
Refreshing to hear of good fuel economy.

Whilst it's not a finacial issue right now I have no desire to waste money and having gone a family diesel/company diesel for the last few years to a 2t brick the mpg has been a small issue for me!

I picked up a beautiful '52 plate td5 dark [midnight?] blue ES auto yesterday, and love every inch of it.

I suspect with it being an auto I won't get quite as good mpg as a manual, but an average of 28mpg around town would serve me fine.

Anything else is a bonus.

My first auto box!

Anyone use anything else other than 'D' for normal driving.

What about moving off in low transfer whilst towing, and then switching up to high [doesn't this have to be up to 5mph?]

Will

Will Hay said:

Hi,

My first auto box!

Anyone use anything else other than 'D' for normal driving.

What about moving off in low transfer whilst towing, and then switching up to high [doesn't this have to be up to 5mph?]

Will

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Check what the owner's handbook says about that.
Mine is a TD5 manual, and it gives lessons in double-de-clutching from a Lo Range start into Hi Range. I wonder how many ladies with horse trailers have duffed-up transfer boxes trying that! Probably none because they won't have read the book!

As yours is an auto you won't need to do this, because the torque converter will handle the first ten seconds from the standing start even with a heavy load. The technique for the auto is to give it a firm half throttle right away, and hold the pedal there, and let the torque converter do the work. Initially the revs will "stall" at about 1,900 - 2,000, while the converter doubles the torque and pulls you away, then you will see the revs pick up. If you are gentle on the throttle it is GOOD to hold the car in low gears one by one, backing off the throttle as you ease the gear shift up a notch. You can easily work the revs between 2,000 and 3,000 , which helps cut down heat build-up in the transmission oil

It is a neat coincidence that the TD5 peaks its torque at about the stall speed of the torque converter. This is ideal. It will just pull away like no problem. Once rolling, try to keep the revs OVER about 2,000 as much as possible, as this will help to reduce converter "slip" and keep the transmission oil temperature down.

CharlesY

Will Hay said:

Hi,



Anyone use anything else other than 'D' for normal driving.


Will

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Being a lazy Landy driver I use the lower gears for going down hills, especially inside the 30 limit, and even for slowing down occasionally, although there is a short time gap between the shift of the stick and the actual change, which makes it less useful for this. The box won't change down if the speed is too high, so you can't over-rev. I find the auto gets through the brake pads fairly quickly, so using engine braking is a saving.

Thanks chaps, very helpful.
Will

CharlesY said:

Well well, and a merry christmas to you too!

Just did a trip of 110 miles each way in the Disco TD5. Started out with a full tank. Parked back home 220 miles later still showing over three-quarters full.

I knew that would make you very happy.

Oh yes, and I can afford to put the juice in just like I can afford to do just about anything I want to do, but I got this way by not being a WASTER.

Waste it today. Do without it tomorrrow.

CharlesY

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Well said !!

I look at some jerks these days, squealing their tyres, driving flat out everywhere etc etc . . . and have nothing less than contempt . . .

I'm quite happy trundling along at a steady 60 ish on the M way, the engine seems to like that speeds, and it will serve me well into it's 2nd 100k of trouble free mileage.

I like you can afford to fill up, in fact if I really wanted to I could drive a nice V8 supercharged flat out and not worry about 10-12 mpg, but I'm mature enough to make my my own mind up and not be pressured by every other idiot on the road who's brains are between his legs with no comms link to his right foot !!

CharlesY said:

Just did a trip of 110 miles each way in the Disco TD5. Started out with a full tank. Parked back home 220 miles later still showing over three-quarters full.

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Wish I could say the same here

I've just done 115 miles in the last fourty-eight hours and had to put £25 in to fill her back up to brimming.
The 115 miles consisted of [careful, conservative driving] 45 motorway miles, 40 miles around town and 30 miles in rush hour.

I was hoping for better than 22mpg, even with an auto box

I did buy it knowing it had been just under 12k since it's last service.

Man, I hope it makes a difference

I was hoping for 27mpg at worst

Will