i30 Owners Club
FUEL ISSUES & ECONOMY => DIESEL => Topic started by: THE i30 on November 14, 2012, 05:15:10
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My new i30 has just clicked over 3000km and my last tank of fuel filled brim to brim with 45 litres of fuel returned 970km, that's 21.5 km per litre. That was around 30% around town and & 70% on the highway with cruise control set at 110km/hr and even towed a light trailer for 125km on the highway during the tank. I think that is awesome figures for a new diesel they tell me it will keep getting better until 10000km :)
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So nice you got 6 speed manual. :goodjob2:
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Well done :goodjob2: :happydance:
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Yeah it's the 6 speed manual, just love it the ratios are perfect for the torque range of the engine :)
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My new i30 has just clicked over 3000km and my last tank of fuel filled brim to brim with 45 litres of fuel returned 970km, that's 21.5 km per litre. That was around 30% around town and & 70% on the highway with cruise control set at 110km/hr and even towed a light trailer for 125km on the highway during the tank. I think that is awesome figures for a new diesel they tell me it will keep getting better until 10000km :)
Good economy that. So the 2012 i30 has a 45 litre tanks whilst previous models had the 54 litre tank? or is it just the diesel that has the smaller tank? :Shocked:
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I don't think the tank was near empty Lester. It just took 45 litres to brim it. :neutral:
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It should be 53 litres but I usually put 58 litres in, sometimes 60 +.
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Thats 602mls in UK figures I regulary fill up on 525-550mls and have 80mls till empty but don't like to let the light come on I normaly get between 50-52 litres in :goodjob2:
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I don't think the tank was near empty Lester. It just took 45 litres to brim it. :neutral:
Thanks mate, just call me a Dummy. :lol:
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No, let me call you a cab instead :D
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Yeah it only used 45 litres for the 970km it has a 53 litre tank so still had heaps to go by the gauge it was just under a 1/4 of a tank left.
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Good result!
The fuel gauge is not 100% I've owned two i30 CRDi's from new & both fuel gauges same.
When I filled all the way up to top, just below the 3/4 mark is the true half a tank @ that point if you fill to very top you get 30L in at least I do. But I have ran it too bottom mark never ran out but the most I've managed to get in is just over 58L furthest on one tank for me is 1,320k but could have managed at least 60k more just I always like to use the one servo so filled up. On average it's easy 1,100k for me
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With my 2012 i30 CRDi the most I have managed to get in the tank on a fill was 60.73 litres.
The biggest range I have got on a tank was 752 miles = 1210 km.
On my previous i30 the most I got into the tank was 58.04 litres
The biggest range on a tank was 621 miles = 999 km
EDIT
Typo correction. 752 was 652
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With my 2012 i30 CRDi the most I have managed to get in the tank on a fill was 60.73 litres.
The biggest range I have got on a tank was 652 miles = 1210 km.
On my previous i30 the most I got into the tank was 58.04 litres
The biggest range on a tank was 621 miles = 999 km
652 miles only equals 1049 Km :confused: (did you mean 752?)
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With my 2012 i30 CRDi the most I have managed to get in the tank on a fill was 60.73 litres.
The biggest range I have got on a tank was 652 miles = 1210 km.
On my previous i30 the most I got into the tank was 58.04 litres
The biggest range on a tank was 621 miles = 999 km
That must have been bitterly disappointing. :disapp:
It would be like batting for two solid days and getting out on the last ball of the innings for 99.
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With my 2012 i30 CRDi the most I have managed to get in the tank on a fill was 60.73 litres.
The biggest range I have got on a tank was 652 miles = 1210 km.
On my previous i30 the most I got into the tank was 58.04 litres
The biggest range on a tank was 621 miles = 999 km
652 miles only equals 1049 Km :confused: (did you mean 752?)
Well spotted - it was a typo - 752 it is. :goodjob:
I have amended my original post accordingly
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I've just ticked over 4000km on mine, and I get an average of 900km highway, and 700km city - although, I haven't got the balls to let it run empty. I always chicken out when it gets to 1/8 full. Usually when i refill, it takes about 43L
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I've just ticked over 4000km on mine, and I get an average of 900km highway, and 700km city - although, I haven't got the balls to let it run empty. I always chicken out when it gets to 1/8 full. Usually when i refill, it takes about 43L
At 43 litres you are certainly refilling before it is empty.
Hyundai reckon 53 litres but I've had over 60 litres many times.
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Yesterday, showing about 1/8th full, we squeezed in 53 litres, in a CW, so 60l probably sounds about right. :goodjob2:
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So with the FD Petrol, how many litres of go juice do we have in our tanks then when the fuel warning light comes on? :faint: Does anyone know that equation?
:sweating:
Might I add you blokes (and sheilas) in the CRDI's are getting some magic economy. Lubberly Jubberly.
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My warning light comes on with 80 miles to empty. It then counts down until it reaches 35 miles when the numbers disappear and are replaced by 00
I got 60.7 litres into my tank after the distance to empty would have read 28 miles (I refuelled 7 miles afer the trip figure changed to zero).
I am not willing to run it any closer in order to refine the figures - I was sweating enough at the time......... :wacko:
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That is really good info and I have to admit I've never really worked it out.
If you know you have a good 50-60 kms left when the dreaded _ _ _ pops up on the DTE, then that's pretty good.
Once I get to know my car more I'll be a bit more confident in pushing the envelope a bit.
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I would be concerned if anyone should assume that my figures are gospel for all i30's. I have little doubt that the measuremnt of fuel level in the tank may not be consistent in a particular car or apply to others. I have noticed my fuel light come on when there are 2 bars (Out of 12) still showing on the fuel gauge - but sometimes it waits for only 1 bar to show.
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No worries, AH, all care no responsibility. :lol: :goodjob2:
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It so happens that I had to refuel today. The fuel warning light came on with 85 miles to empty with 2 bars showing on the fuel gauge. At 40 miles to empty the fuel gauge showed one bar and at 30 miles to empty the trip distance to empty changed to -- -- and the single bar in the fuel gauge started flashing. I ran the car for a further 16 miles before refuelling (theoretically 14 miles to empty) and managed to squeeze a record 62.3 litres into the tank.
(http://img.photobucket.com/albums/v308/AlanHo1937/i30%20Forum/FuelReceipt.jpg)
Without boring you with the maths - using the data from this fill indicates the tank plus filler pipe volume is 63 litres.
I also did the maths on the previous fill when I got 60.73 litres into the tank with a distance to empty of 28 miles. This again resulted in the tank plus filler volume working out at 63 litres.
On the previous tank, fuel economy was 57.3 mpg (4.9 l/100km) – distance travelled 752 miles (1210 km)
On this last tank, fuel economy was 52.8 mpg (5.35 l/100km) - distance travelled 710 miles (1140 km)
Brim to brim calculations
There were 3 DPF regenerations for each tank.
I guess the increased fuel consumption can be attributed to the sudden change to really cold weather over the past 3 weeks and a slightly higher proportion of city driving (bloody Christmas shopping!!!)
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Excellent.
So I'' work on 63 litres then and send you the towing bill if I run out. :D
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Excellent.
So I'' work on 63 litres then and send you the towing bill if I run out. :D
I will add it to my collection - which stretches back many years................ :happydance:
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Excellent work Alan. I have the 'needle' fuel gauge (FD) I would probably get 100 km with the warning light on, but I am one who keeps his car half full, not so much damage at the bowser @ AU$1.55 for unleaded premium 95 which I use. :disapp:
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Hi.
How on earth do you achieve these figures? I just run mine for 5000 km and if I do my very best I get around 20 Km/l, but normally I get around 17-18 Km/l. I mostly do around 90 km/h on highway and 130 on freeway's.
But then Again I never top off the tank when I fill it, I think I will do this the NeXT time. Oh it's a 2012 1.6 CRDI
/Jakob
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Hi.
How on earth do you achieve these figures? I just run mine for 5000 km and if I do my very best I get around 20 Km/l, but normally I get around 17-18 Km/l. I mostly do around 90 km/h on highway and 130 on freeway's.
/Jakob
So that is between 5 LPH and 5.5 LPH which is not too bad and should improve as you get more kilometres up.... :cool:
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Hi.
How on earth do you achieve these figures? I just run mine for 5000 km and if I do my very best I get around 20 Km/l, but normally I get around 17-18 Km/l. I mostly do around 90 km/h on highway and 130 on freeway's.
But then Again I never top off the tank when I fill it, I think I will do this the NeXT time. Oh it's a 2012 1.6 CRDI
/Jakob
Your figures are very close to mine as posted above.
In your units - my last two tanks averaged 20.4 km/l and 18.7 km/l. I don't usually drive at the high speeds you quoted though.
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Hi Jakob
Many new car owners have stated that the good fuel economy didn't start before doing 10.000-15000 km so there might be better consumption ahead, but the fact that you do 130 on the motorways doesn't do any good.
It will increase the consumption significantly, just compared to doing 110 km/h instead.
I get around 5,6 in my 2008 CRDi 5 speed here in the wintertime, and 5,3 in the summer, so I understand you would expect to achieve better figures.
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Excellent work Alan. I have the 'needle' fuel gauge (FD) I would probably get 100 km with the warning light on, but I am one who keeps his car half full, not so much damage at the bowser @ AU$1.55 for unleaded premium 95 which I use. :disapp:
I am always intrigued by people who do this. You visit the servo 2x more than necessary and effectively your car has only a 30lt tank, which if true, you would probably complain about.
More time driving around with a full tank = more weight & less fuel economy. :undecided:
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Excellent work Alan. I have the 'needle' fuel gauge (FD) I would probably get 100 km with the warning light on, but I am one who keeps his car half full, not so much damage at the bowser @ AU$1.55 for unleaded premium 95 which I use. :disapp:
I am always intrigued by people who do this. You visit the servo 2x more than necessary and effectively your car has only a 30lt tank, which if true, you would probably complain about.
More time driving around with a full tank = more weight & less fuel economy. :undecided:
I brim the tank and let it run to nearly empty - then I brim it again. Thus the average fuel load over the life of a fill is half full.
To be honest I have not noticed any difference in economy between when the tank is full and when it is nearly empty. I do accept that in theory it should make a difference - but by how much I have no idea.
It would make an interesting experiment - hmmmm - something to think about :goodjob:
Watch this space............ :whistler:
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Yes it is a technical difference. The object of great fuel economy and a decent size tank is to minimise servo visits & like you, we do the same here. Unless you have a girlfriend there, I stay away from them like the plague.
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Excellent work Alan. I have the 'needle' fuel gauge (FD) I would probably get 100 km with the warning light on, but I am one who keeps his car half full, not so much damage at the bowser @ AU$1.55 for unleaded premium 95 which I use. :disapp:
I am always intrigued by people who do this. You visit the servo 2x more than necessary and effectively your car has only a 30lt tank, which if true, you would probably complain about.
More time driving around with a full tank = more weight & less fuel economy. :undecided:
Mmm, got me thinking, how much does 55 litres of petrol weigh? :Shocked:
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Twice as much as 27.5.
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Me thinks it's 40 odd kgs..... :undecided:
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53 litres of petrol weighs 37.68 kg
53 litres of diesel weighs 45.05 kg
(Density of petrol being 0.711 kg/l. Density of diesel being 0.85 kg/l at normal temperature and pressure)
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Were you an engineer or something? :undecided: :lol:
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Were you an engineer or something? :undecided: :lol:
Frayed so - mechanical and electrical qualifications. It's still in the blood.
Here is a bit more info to explain why diesel cars get better fuel economy than petrol - diesel contains more energy per litre
53 litres of Diesel contain 568 kWH of energy
53 litres of petrol contain 509 kWH of energy
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Then why does LPG with its higher octane rating give less power?
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Because the molecules of fuel are much further apart (gas vs liquid) & it's chemical formula.
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Then why does LPG with its higher octane rating give less power?
53 litres of autogas (lpg) contain 382.5 kWH of energy - which is 75% that of petrol.
The octane rating of a fuel is not a measure of its energy content but a measure of how high a compression ratio it can withstand without auto-igniting (detonating). A fuel with a higher octane rating is less prone to auto-ignition and can withstand a greater rise in temperature during the compression stroke of an internal combustion engine without auto-igniting, thus allowing more power to be extracted from the Otto-Cycle.
Many high-performance engines are designed to operate with a high maximum compression, and thus demand fuels of higher octane. A common misconception is that power output or fuel efficiency can be improved by burning fuel of higher octane than that specified by the engine manufacturer. The power output of an engine depends in part on the energy density of the fuel being burnt. Fuels of different octane ratings have similar densities, but because switching to a higher octane fuel does not add more hydrocarbon content or oxygen, the engine cannot develop more power..
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53 litres of petrol weighs 37.68 kg
53 litres of diesel weighs 45.05 kg
(Density of petrol being 0.711 kg/l. Density of diesel being 0.85 kg/l at normal temperature and pressure)
So I wasn't too far off with my guestimate for 55 litres... :undecided:
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53 litres of petrol weighs 37.68 kg
53 litres of diesel weighs 45.05 kg
(Density of petrol being 0.711 kg/l. Density of diesel being 0.85 kg/l at normal temperature and pressure)
So I wasn't too far off with my guestimate for 55 litres... :undecided:
:Agoodjob: Rusty :goodjob:
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According to The Danish Transport Authority a rule of thumb says that for every 100 kg you add to the cars weight, you will use around 4 % more fuel.
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According to The Danish Transport Authority a rule of thumb says that for every 100 kg you add to the cars weight, you will use around 4 % more fuel.
I wonder if that works the same when you tow your van (I suppose aerodynamics comes into it too)
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Oh yes, that's quite another case.
Normally I get around 5,3 LPH in the summer. When going to work, I allways have 3 colleagues with me in the car, so that's i30 and me +250 kg.
When towing the caravan I normally get around 9 LPH at the same speeds. Car 1800 kg + caravan 1400 kg.
The drag have HUGE impact on the consumption, but I can also confirm that just a little trailer, lower than the car, with e.g 500 kg will add extra consumption.
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To move anything requires energy, if there's more "anything" then more energy is required + all the added extras, wind, altitude etc.
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I get around 5,6 in my 2008 CRDi 5 speed here in the wintertime, and 5,3 in the summer, so I understand you would expect to achieve better figures.
Interesting. In the (late) summer I had between 4.6 and 5.6 with my i30 GD CRDI. But now in winter the fuel consumption went up to 7 l / 100km :(
So the winter has a much larger impact on the consumption of my car.
Maybe it will be better when the car is a bit older. I only have 1800 km on the clock.
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Well, I just filled the tank today.
The 5,6 LPH was a bit optimistic... :disapp:
Over the last 730 km the LPH was 6,0 but we have had temperatures below 0ºC since last fill.
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Well, I just filled the tank today.
The 5,6 LPH was a bit optimistic... :disapp:
Over the last 730 km the LPH was 6,0 but we have had temperatures below 0ºC since last fill.
Once you have below 0C temperatures, there is no moisture in the air and the air is less dense, this reduces power significantly as it is the water vapour in the air that expands when heated.
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Well, I just filled the tank today.
The 5,6 LPH was a bit optimistic... :disapp:
Over the last 730 km the LPH was 6,0 but we have had temperatures below 0ºC since last fill.
Once you have below 0C temperatures, there is no moisture in the air and the air is less dense, this reduces power significantly as it is the water vapour in the air that expands when heated.
Yes,but that's not the only reason.
When there's frost, I must let the car idle until the windscreen is cleared for ice outside and the misting ? on the inside.
All that idle doesn't do any good for economy.. :(
...and we use the heated seats a lot and the heated rear window...
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:agreed:
We have many places in Australia where that never happens :mrgreen:
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:agreed:
We have many places in Australia where that never happens :mrgreen:
Lucky bast.... :mrgreen:
I really have to consider emigrate to your wonderfull country.. :snigger:
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One of our Taswegian ladies emigrated to your country and is now royalty, can't promise the same for you though. :neutral:
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One of our Taswegian ladies emigrated to your country and is now royalty, can't promise the same for you though. :neutral:
I would expect nothing less, of course... :rofl: :rofl:
Mary, she is a pretty girl. :mrgreen:
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There ARE more,
http://www.heavy.com/action/girls/2011/03/the-20-hottest-australian-girls/ (http://www.heavy.com/action/girls/2011/03/the-20-hottest-australian-girls/)
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There ARE more,
http://www.heavy.com/action/girls/2011/03/the-20-hottest-australian-girls/ (http://www.heavy.com/action/girls/2011/03/the-20-hottest-australian-girls/)
OK, that settles it..! I'm moving asap.
:rofl: :rofl: :rofl:
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Yes, Mary is quite attractive..
Another factor with the cold and wet is increased rolling resistance with the tires as well..
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The trouble is - my wife would want to accompany me..... :blubber:
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So now I've done one tank of brimmed diesel. Odometer said 6.0 and my caculation was 16,5 L/km. So it's pretty accurate.
I still do 130 on freeways and 90 on highways. The 90 is mostly in order to use the 6'th gear, as the engine gets noisy below 1500 rpm.. Temperatures has been below zero during the period.
After i filled it again, i did 120 km on highway in above zero degrees, and the Odo says 4.8. So temperature has indeed influence.
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I assume you did some city driving in your 1st tank. This will push up your fuel consumption too.
Driving @ 130 will use more fuel than at 80-90 ks. I know this is too slow for your roads, but I'm just talking about wind resistance on your car. :goodjob2:
http://eartheasy.com/move_fuel_efficient_driving.html (http://eartheasy.com/move_fuel_efficient_driving.html)