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Maximum miles from a tank of fuel - bostin
Is anyone else getting as sad as me and seeing how many miles they can eek out of a tank of fuel?? In an effort to offset the rising fuel costs, I've taken to trying to fill up as little as possible and to drive as economically as is reasonable (60mph on motorways & A & B roads).

I last filled up last Thursday and since then have driven up to North Wales and back (incl some 'spirited' driving around Snowdonia & short trips to shops) as well as driving from Wilts to Southampton and back all this week which includes the joys of the M27 to the north of the city! Total mileage so far on the tank is 980 miles. Fuel light came on at 930 miles. Based on my current fuel economy of 69.1 mpg (trip computer accurate to 0.5 mpg), I think I could reach 1050 miles before running dry. Going to definitely take it up to 1000 miles so that I can tick it off the strange list of achievements that I want to achieve!

So am I alone in my sadness or do other people want to 'come out' ;-)

Bost

p.s. car is a 10yr old Passat TDI with a notional fuel tank capacity of 62 litres but with a little bit of 'venting' will take another gallon or so.

Edited by bostin on 09/05/2008 at 22:17

Maximum miles from a tank of fuel - Pat L
That's amazing economy. I've had 725 miles from a new style Passat 2.0 TDi but I am humbled by your achievement.
Maximum miles from a tank of fuel - steveb
Guilty as charged - currently on 54.3 mpg from my Vec Est 150 CDTi.

Normally get around 41 mpg.

Why is it harder driving more slowly ?
Maximum miles from a tank of fuel - Mad Maxy
Bostin, that's amazing!

Mind you, best yardstick is mpg or some other measure of fuel used against distance, since those with giant tanks will otherwise always beat those with small ones.

69 mpg pretty damned impressive tho'...
Maximum miles from a tank of fuel - MikeTorque
That's a good result Bostin very well done. The tank size on my Focus 1.6 TDCi limits me to around 700 miles for mixed driving. On A and B roads it will easily exceed 70+ mpg but I've never got close to your figures on a tank full.

Which diesel do you fill up with ?
Are you going to try for the 1000 miles on a tank ? (go on you know you want to)
Maximum miles from a tank of fuel - DP
Blimey - I was chuffed with 450 to the light on a 70 litre tank (petrol!)

A former work colleague squeezed 900 out of a tank on his 406 HDi 90PS during the fuel blockades a few years back.

Cheers
DP
Maximum miles from a tank of fuel - Big Bad Dave
660 miles two days ago from a 3-litre petrol Peugeot 406. Tanked up in Hull near the ferry port and didn't fill up again until I was 40 miles into Poland. Didn't exceed 65 mph on the whole trip though. Also broke my record for longest unbroken drive at 400+ miles. Could have done more but wife wouldn't use the plastic bottle and funnel I bought for her.
Maximum miles from a tank of fuel - L'escargot
I never run mine down to much less than half full (or half empty!), because I can't see the point. However, I keep a record of all the petrol I buy and plot graphs of monthly average consumption in mpg against both odometer reading and month of the year, and compare with previous cars. It keeps me out of mischief!
Maximum miles from a tank of fuel - cjehuk
That's some impressive fuel economy - my best is just over 750 miles in an A3 2.0TDI (55l tank) at 61mpg or 500 miles in the TT (also 55l) at 41.5mpg.
Maximum miles from a tank of fuel - Roger Jones
"p.s. car is a 10yr old Passat TDI with a notional fuel tank capacity of 62 litres but with a little bit of 'venting' will take another gallon or so."

As an ex-motorcyclist, may I appeal to you and others not to push your fill-ups to the limit and beyond. Finish at the first click and be done with it. Road spillages of diesel are lethal to those on two wheels and not exactly helpful to others too.
Maximum miles from a tank of fuel - oldtoffee
>>Why is it harder driving more slowly ?

Maybe because you're not used to it and others around you are travelling faster so you have to make a conscious effort to hold back. For me it is the big increase in the frequency of lane changes back to the inside lane where the lower speeds dictate I should be. In normal traffic conditions it requires considerably more attention and forward planning in order to maintain constant speed avoiding hard acceleration. Over a long journey the extra concentration takes its toll.

Maximum miles from a tank of fuel - bostin
Just to update this thread. Managed 1000.1 miles on the tank before deciding to fill up at an opportune Shell garage (okay I admit I went past it then turned around to get to 1000 miles!). That tank was Morrisons finest. 250 miles clocked up so far this week and averaging 73 mpg ;-). Now getting very bored of driving this way and only the 'game' of continually trying to up the mpg on the trip computer is keeping me going.... and the thought that I am saving £60-£70 a month compared to that which it would otherwise cost if I was 'making progress'.

R J - not sure if VW's are distinct in this way but there seems to be a fair extra bit of capacity in the tank beyond when the pump first clicks. There is a button on the inside of the filler cap which when pressed in enables this 'expansion tank' to be used. As far as I was aware as I long as don't brim it up to the filler neck (which I stop a long way short of) does not pose any significant risk of spillage. Happy to bow to the wisdom of the backroomers though....

Bost
Maximum miles from a tank of fuel - frazerjp
I got 501 miles out of a tank of my old Pug 205 1.1, which was used on a long run coming back from Dumfries to home in Wycombe. From a trip round from Ireland.
Maximum miles from a tank of fuel - MikeTorque
Nice one bostin and the average of 73mpg is impressive, well done.
Maximum miles from a tank of fuel - Cliff Pope
What is the weight of a full tank of fuel, and what effect does that weight have on fuel economy?
Maximum miles from a tank of fuel - Billy Whizz
Wikipedia tells me "The density of petroleum diesel is about 850 grams per litre."
Maximum miles from a tank of fuel - Cliff Pope
Wikipedia tells me "The density of petroleum diesel is about 850 grams per litre."


But is filling the tank and then running until virtually empty the most economical method?
On average you will have been carting around half a tank of fuel. If instead you half filled it, then ran to nearly empty, you would make a permanent weight saving of 1/4 of a tank. But offset would be the additional consumption of an extra stop/start.

And the fact that fuel would have gone up 10p a litre inbetween fills!
Maximum miles from a tank of fuel - Billy Whizz
Nice result bostin! I don't know why you think this is sad. I call it goal oriented and focussed. I have been doing it for years :-) but not with such good results.

When I was 20 (in 1985) I drove the 300 miles from Nairobi to Mombasa in one go at a steady 35 mph in an newish 800cc Suzuki Alto. I got 70 mpg. I drove the return journey at exactly double the speed and got exactly half MPG.

I have also got 1000 miles from a tank but that was due to a huge prototype 22+ gallon (100+ litre) plastic fuel tank I was testing in 1990 in North Africa driving with 2 friends in a heavily laden Tdi Discovery (~46mpg). On another trip in 4 Defender Tdis, we filled up all our jerry cans with diesel in Algeria at 10? pence per litre and drove all the way back to Birmingham without visiting a single fuel station (2000 miles). Not allowed, of course. One of the 110 hardtops I had converted to carry 30 jerry cans inside (600 litres) lashed down on the floor plus all had twin fuel tanks (150 litres). The other vehicles were refuelled en route from these and other cans we were carrying. By the south of France all the jerry cans were empty but the tanks were full.

By far worst car for fuel spillage I know is a pre-1990 Range Rover (the one with the low fuel filler). In the late 80's I was working late in a workshop one winter's day doing some soldering or something quiet at the workbench when I heard a dripping sound starting. I saw petrol leaking from the fuel filler of a Range Rover that had been refuelled, brimmed, in the cold and then parked in the warm garage. I quickly put a clean bucket underneath and the dripping turned into a trickle and by the time it had stopped about 4 or 5 litres had leaked out. The car was only a couple of years old and it was in tip top shape.

bostin, have you ever considered taking part in fuel economy runs organised by a motoring club near you? I am not certain they do them anymore as I've been abroad for the last 11 years but they have always appealed to me as I very much enjoyed the navigation events and trialling events I've been on. You need a very good OS map reader to win but it sounds like you could probably drive away with the novice cup!
Maximum miles from a tank of fuel - drbe
I seem to recall a Mercedes E class diesel drove from Land's End to John O'Groats (or reverse) on one tank of fuel. They did not exceed 60mph.
Maximum miles from a tank of fuel - Alby Back
Crikey, that was quick reversing !

;-)
Maximum miles from a tank of fuel - PoloGirl
Blimey... I think I'm doing well if I get more than 540 miles from a tank.

Right... this is going to be my new game to replace fuel light bingo!
Maximum miles from a tank of fuel - DP
I recall reading about a Jaguar XJ TDVi which was driven 840 miles from John O'Groats to Land?s End on a single tank. Having reached Land?s End, the driver headed back to Jaguar HQ without refuelling and the car eventually ran out of fuel with 1000.2 miles showing on the trip.

Apparently this was a standard car fitted with satellite-navigation, CD auto-changer, Premium Sound and rear DVD screens.

It averaged 53.5mpg. Almost unbelievably impressive for a big, automatic luxury saloon with more convenience gadgets than my house.

Cheers
DP
Maximum miles from a tank of fuel - craig-pd130
That's very impressive, Bostin.

The best I ever got from my Passat B5.5 130 diesel was 640 miles for 12.4 gallons, about 51.5 mpg.

That was a touring holiday in Wales, without trying to conserve fuel. That was good enough for me!
Maximum miles from a tank of fuel - PoloGirl
I am stunned...

Did no more than 65-70mph all the way to work and back this afternoon. Normally it would be fair to say I've got a heavy right foot, and the average mpg counter shows about 44mpg on that journey.

Today it was showing 58.5mpg by the time I got to work! Maybe I'd never given it enough consideration before but I'm surprised it made that much difference. I'm on a mission to get 600 miles from this tank now... and then more from the next one!

(But... sticking to 60mph is sooooo tedious!!)

Maximum miles from a tank of fuel - Mapmaker
Apparently this was a standard car fitted with satellite-navigation [i.e.] more convenience
gadgets than my house.
Cheers DP



The mind boggles. Of all the posters on here, I'd have thought only Escargot would need satnav on his house.

Maximum miles from a tank of fuel - Big Bad Dave
"I'd have thought only Escargot would need satnav on his house"

My mind was wondering yesterday as I mowed the lawn and I got to fantasising about having a garden so big you'd need a tractor-mower with sat-nav.
Maximum miles from a tank of fuel - Westpig
and I got to fantasising about having a garden so big you'd need a tractor-mower with sat-nav.
>>

6 years or so ago, i had a new boss at work. I'd been through a divorce and at that time had recently rather extravagantly had a big spend out on motoring toys inc a nearly new Jag. My new boss obviously thought i was moneyed (which very much is not the case) as he was less than subtly trying to find out where i lived and how big the house was etc. At one point he asked me if i had a garage (as being London, many places don't) and I replied "I'm not sure, the driver takes it off somewhere to the bottom of the garden, there might be one"

at which point he burst out laughing and realised i'd sussed his nosiness
Maximum miles from a tank of fuel - J Bonington Jagworth
Blimey - that's about the same as my motorbike, and I am (was) pretty pleased with that!

You've reminded me that I overheard an item on R4 that mentioned 'hypermiling' in the US, which seems to involve a lot of driving in neutral, even switching off on long downhill stretches, although goodness knows what you do if you need to stop in a hurry! I did hear someone suggest that proper anticipation was a major factor in getting better mileage - something that was more or less compulsory in the days of few horses and rubbish brakes...

Edited by Webmaster on 16/05/2008 at 02:00

Maximum miles from a tank of fuel - Optimist
This comes from a site on the Mobil Economy Run which I remember from when I was a kid. Principles remain the same, I suppose.
* Use the choke only when the engine is cold and release it as soon as possible. Warm the engine up on the move-it will warm up more quickly and you will use less petrol.

* Avoid fast starts-you can use up to 60% more petrol than with a smooth slow start.
* If you drive at 65 miles an hour you may be using twice as much petrol as at 35 miles per hour. Most cars give their most econo­mical top-gear performance between 35 and 45 miles per hour.
* Especially in the 10/20 miles per hour range, correct gear selection is another petrol saver. Use of an unnecessarily low gear can consume 50% more petrol.
* Anticipate hold-ups and bring your car gently to a standstill instead of braking fiercely at the last moment.
* Do not drive hard into a headwind-the amount of petrol used is out of all proportion to the gain in speed.

Start your own economy run today. If you could obtain just one mile more per gallon you could enjoy the equivalent of two weeks' free motoring a year-surely an important incentive.>>
Maximum miles from a tank of fuel - XantKing
The exact figure escapes me, but I'm fairly sure it was 957 miles on a single tank of diesel on my 110 HDi Xantia before I chickened out and refuelled - I think has a 65 litre tank. That was a run from the SE of Glasgow to Muswell Hill in London and back, and a wee bit of pottering around at either end.

Last week, I left Nottingham with quarter of a tank showing in the same car. Low fuel light came on just as I left Southwaite services and the 99 miles to Glasgow sign appeared, made it home with ease.

I quite enjoy tootling along at 60 odds though, very relaxing with the engine only registering around 2,000rpm, although much easier on quiet roads. Mind you, my wheel balance or tracking must need done at the moment, getting a minor but unpleasant vibration between 65mph and 75mph, so that proves an excellent aid to keeping it at an economical 60-65mph!

Ideally, I'd never let it go to the low fuel light, am always told about dragging up rubbish from my fuel tank and damaging the in-tank fuel pump, but alas, finances and fuel prices are such that I live life from one 20 quid fill-up to another at the moment!
Maximum miles from a tank of fuel - Oz
842 miles from 63 litres in an E46 (Y reg) BMW 320d.
Maximum miles from a tank of fuel - RaineMan

When I were a lad had a Triumph 250 motorcycle. I was quite impressed with ~80 mpg rising to 100mpg on a longer gentle run (the gentle being quite rare!). This thread makes it seem like a gas guzzler! Does anyone do a diesel motorcycle?
Maximum miles from a tank of fuel - frazerjp
I can remember watching TG many years ago, when that Yorkshire motorcyclist lad was one of the co-presenters at the time.
He test rode a diesel powered Triumph motorbike, it was dog slow & it was slower then a Tata jeep, it's top speed was 75-80mph!! Can't remember it's fuel consumption figures I'm afraid.
Maximum miles from a tank of fuel - mikeyb
Think Clarkson did somethng similar on TG with an A8 - london to Somewhere in Scotland and maybe back again - details escape me now, but remember being impressed at the time.
Maximum miles from a tank of fuel - L'escargot
Because tank sizes vary I wouldn't have thought that the number of miles from a tank has much relevance. It's the average rate of fuel consumption that's important.
Maximum miles from a tank of fuel - bostin
Managed 1020 miles out of last tank. Averaging 72mpg for 970 miles, dropped down significantly when I had to make a mad dash to the hospital. Saw 80.3mpg on one 47 mile journey last week.

Just about coping with the urge not to belt it everywhere although I'm not sure much longer I can manage to!

Maximum miles from a tank of fuel - Round The Bend
Bostin, you are obviously stick thin. (i)(ref: fat people thread)(/i)

Edited by Round The Bend on 29/05/2008 at 08:48

Maximum miles from a tank of fuel - ijws15
Just filled the Skoda up this morning, still not run in but improving.

672.2 miles at 57.1mpg so a long way to go. At fill up the trip computer was saying 50 miles to fill up, but shortly after leaving home was saying 30 miles left and I had driven 20 miles in between! If the manual is correct there was a gallon left in the tank.

That is Calais to Staffordshire, a week and a half of commuting to work and some local running.

Best in recent cars - The Honda's was 672.2 miles at 57.28 (Well run in by then and still amazing for a 2.2 Diesel in a car of that size) and the previous Passat (Petrol 1.8T) was 560.7 at 44 mpg.

Don't still have the records but once beat 700 miles at around 72 in a 84hp Vectra 2.0 TD

I see I have a long way to go but the hills on my commute make life difficult, must find a flat route to work!
Warming the engine up/Max miles from tank of fuel - Driller52
"Warm the engine up on the move-it will warm up more quickly and you will use less petrol."

According to my car's handbook, it does indeed say that for the most economical driving, you should start the car and drive off imeediately but I just wanted to ask people's thoughts on this...

Remember the old Mobil ads which claim that it takes about 10 minutes before the oil in your car is hot enough and circulated enough to be protecting your engine and how "metal grinds against metal"?

Well, surely if you're starting your car up (say, first thing in the morning) and you drive straight off, won't all the oil be at the bottom of the engine so that if you drive off in such a way, parts of your engine are not protected, grind against metal etc etc?

Surely it's better to start your car and let it tick over for a minute or so to allow the oil to get round the engine first?

I'd sacrifice a little bit of fuel economy to save my engine and let it warm up before driving off!

What do you guys think?
Maximum miles from a tank of fuel - Driller52
"but with a little bit of 'venting' will take another gallon or so."

Hello Bost!

What is venting and how do you do it? Can I do it on my 52 plate Mondeo diesel?

I do agree with one of the other guys who says to be careful not to overfill your tanks to avoid diesel spills - I ride a CBR600 motorbike and have nearly come off due to diesel on the road!

Please let me know what venting is and how to do it!

Ta,
Tony.


Maximum miles from a tank of fuel - wotspur
Bostin, whilst it is an incredible achiement, it makes you a very sad man- just like me.
I do a lot of miles and have reduced quick accelerating and abrupt braking, but find it hard to poodle along at 55, I find it boring and hence concentrate less, so I've only managed 600 ish ina 2.2 dci,but I do carry heavy loads,a nd cruise at 80ish.
Out of interest did you have the radio, lights,wipers and or air conditioning on, if so how much further might you have done ??
Talk about sad -who else makes up words using the registration no's, changing no's to letter, 7's to T, 3 to an E, 4 to an H, ETC, i get really excited when I come up with a 7 letter word
Maximum miles from a tank of fuel - Big Bad Dave
"it makes you a very sad man- just like me"

I think he's really funny I've enjoyed this thread. I was genuinely well made up for him this morning when I read that he hit 1020.
Maximum miles from a tank of fuel - George Porge
Two filthy diseasal tdi Golfs in this household, a MK3 estate and a MK4 hatch.

The MK3 does 45 - 50 MPG does longer journeys usually with 4 adults and driven briskly

MK4 does short journeys and does 40 - 45 MPG, however in the past I have driven with economy in mind and acheived 58 MPG on one tank, I nearly died of boredom, all long journeys and very little time spent in traffic.

A Passat that does 80 MPG, I don't think so, 3 cyl Lupo tdi maybe, Passat no way Pedro ;o)
Maximum miles from a tank of fuel - MikeTorque
According to my car's handbook, it does indeed say that for the most economical >> driving, you should start the car and drive off imeediately but I just wanted to ask >> people's thoughts on this...


Interesting that they say "for the most economical driving", BUT for the most mechanically sympathic driving and engine longevity it's best to allow at least 15 to 30 seconds on the first start of the day to allow the oil to circulate properly, plus it helps reduce pollution levels from the exhaust when the car is set in motion.
Maximum miles from a tank of fuel - Driller52
Thanks MikeTorque!
Maximum miles from a tank of fuel - bostin
"A Passat that does 80 MPG, I don't think so, 3 cyl Lupo tdi maybe, Passat no way Pedro ;o"

I'm as surprised as anyone believe me! The 80 mpg is only achievable one way though - gradient favours it.

Haven't gone out of my way to achieve the above figures. Car still full of the usual clobber - CDs, bottles of water, baby clutter etc. Keep up to 60 mph where limits allow etc but don't exceed 60.

The only things that I'm doing significantly differently are anticipating slowing down areas (foot off throttle and keep in gear), downhill gradients (coasting out of gear) and slowing my rate of acceleration.

My time of travel and types of road are probably also a factor - try leave for work at 6:30am arrive by 7:30-7:45. Leave work at 4:30 arrive 5:45.

IMHO the weather is also a big factor - rain seems to really knock the mpg. Not sure that it's to do with the reduced efficiency of the road itself, the denser air (does the rain itself act as friction?!?!?!!), and people generally faffing around etc ;-)

As a result of this, and a need to blow a few cobwebs away, this tank is showing 'only' 65 mpg after 450 miles :-(.

When the weather improves I'll be aiming for 1050 miles next - I fear utter geekness is slowly overcoming me....
Maximum miles from a tank of fuel - motorprop
How about a thread for minimum miles on a tank ?


start with 80 litres of unleaded taking a 4.2 litre Nissan Patrol Auto about 260 miles in suburban driving. It also has an LPG conversion, but that's much worse economy wise . The figure here ( 80 / 260 ) refers only to driving on unleaded .
Maximum miles from a tank of fuel - George Porge
The figure here ( 80 / 260 ) refers only to driving on
unleaded .


14.75 MPG, oh dear :o(
Maximum miles from a tank of fuel - nortones2
The VAG TDI and PD diesels esp. the lower powered, non-DPF, should command a higher price if the fuel situation continues its trend! Our 99 edition 110 pre-PD Passat would manage there and back to Kent, from Lancashire on one tank (over 600 miles) with some over, @ 60 mpg, brimmed. Not as good as Bostin though. In the current Honda 2 litre Civic S, 35 mpg over 320 miles, keeping at or around 75 indicated, with the very occasional sprint. Pathetic economy: 42% better in the diesel, and at a more spirited though vigilant, pace.

Edited by nortones2 on 29/05/2008 at 21:49

Maximum miles from a tank of fuel - Martin1981
I managed to scrape 640 miles from a full to the brim 60 litre tank in my 306 1.9TD a few years ago during a week of steady motorway driving not exceeding 70mph. Was running on vapour by that point I must say!

As the 306 is terminally ill, I have just purchased a 2001 Focus 1.8 TDCi (115) which is supposed to return 51 mpg on the combined cycle as opposed to the 306's 43mpg so I'll be interested to see how many mpg I can squeeze out of this when I pick it up on Saturday!

Will keep you posted.....!

Martin
Maximum miles from a tank of fuel - Paul I
When we had a VW Sharan 1.9 tdi 110 bhp non pd, I could easily get 55 mpg out of it on a run but you had to have economy on your mind. I find the cars in general are getting cleaner but are doing less to the gallon.

I have driven mk1 and mk 3 Ford focus on the same run and the old one did 44 mpg the new one 36 mpg (10k on the clock ) same for a number of other cars.

Maximum miles from a tank of fuel - L'escargot
Run my car until the fuel is down to the last teaspoonful just to see how far it will go? No way Pedro! I prefer to leave the inevitable sediment at the bottom of the tank undisturbed.
Maximum miles from a tank of fuel - Waino
Run my car until the fuel is down to the last teaspoonful just to see how far it will go? No way Pedro! I prefer to leave the inevitable sediment at the bottom of the tank undisturbed.>>


Good point.

On another thread about the concerns over the reliability of modern diesels, 'Injection Doc' made the comment - "The most common cause of CR failures is caused by those that allow the fuel tank to run very low before refill.( this causes air to enter the HP pump shortning its life ) I never run below 1/4 tank."

So, maybe not a good idea to run your tank to empty?

Maximum miles from a tank of fuel - SuperBuyer
Golf 150bhp PD - returning 50 to 55mpg actual. Thats based on 600 miles a week commuting. I never let the tank get that low...

Hopefully I'll get another 2 years at least out of it (2004, 132K to be reached today)

The Shogun is another matter, but 30mpg is still well in excess of what I expected from it!
Maximum miles from a tank of fuel - kiss (keep it simple)
585 miles from a petrol 2.0 litre Cavalier. (London to the north of Scotland) My ex boss got home from Spain in his Audi 100 1.8 Petrol on one tank. That must have been well over 700.
Of course this was before catalysts!