i30 Owners Club
FUEL ISSUES & ECONOMY => DIESEL => Topic started by: squirrell48 on August 25, 2011, 08:59:15
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I have done 1500 MILES in my 6 speed diesel i30 premium hatchback and I am disappointed with its fuel economy. I drive exactly the same route (60 miles) as I did in my Mk 4 Golf 1.9 TDi Estate which was 10 years old and always returned at least 66 miles to the gallon on this route. I also drive in the same style as I did before yet I am getting barely 56 miles to the gallon out of the i30. I suspect that HY has sacrificed mpg for the sake of reduced emissions and the Diesel Particulate Filter is drinking fuel when it goes through its self-cleaning cycle when the engine warms up.
I have also found that the distance to refuel computer is rubbish. I had driven 450 miles and the computer said I could go another 100 miles when I refueled to full. The distance to refuel computer then reset itself to 365 miles.
Apart from these 2 problems I am happy with the car.
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I have done 1500 MILES in my 6 speed diesel i30 premium hatchback ...
If you've only got 1500 miles showing on the clock I'm surprised you're getting even 56mpg to be honest. Took me close to 15000 miles before my engine loosened up and I started seeing 62+mpg.
As for the DPF and its regeneration cycle... someone correct me if I'm wrong here, but that doesn't happen each time the engine warms up. Should happen once every blue moon and only when the exhaust system is mad hot.
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agree with shambles, it takes at least 5000km to get the engine to loosen up
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My 4 yo diesel only has 21K but I average between 48 and 54 mpg.
This is per the readout and my calculation at each fill up.
I been getting this sort of average from day 1.
I let the car drive itself as I find I don't need to give it as much throttle as I gave my previous petrol car - Accent
I only do short town trips with the occasional burst down the motorway.
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i get around the 6L/100km on the first three tanks of my new car. first was 6.2 then 6.4 then 5.7. The car has only 2000km/1250miles on the clock so i am happy with it! It should shave another litre off in the next 5-10 thousand kkm!
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I agree with Shambles - I have a petrol but it has only started to come really good now with the fuel economy getting 300km to half a talk and I have just over 13000km on the clock..
At the beginning I was just getting 400km to a tank.
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ARRH! lol! yes lol. I am doing lots of driving! i want the engine worn in! haha
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Driving home this afternoon, i filled the car with the first full tank i have used from new, it only had 1/4 tank when i got it, but now i have used 1 full tank, i have done 1484 Km, and am using an average of 5.2 L/100 Km!
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I think our driving styles differ :P I like to smoke the people behind me every so often! HAHA!! One technique i have learnt is if people talegate me for long enough I just put it back a gear and floor it....they hate the smell and smoke so they change lanes or BACK OFF! hahaa
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On my recent weekend away (to Lakes Entrance), my CRDi, according to the trip computer, averaged 4.4l/100km.
I certainly can't complain about that as I wasn't particularly driving for economy.... :goodjob:
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On my recent weekend away (to Lakes Entrance), my CRDi, according to the trip computer, averaged 4.4l/100km.
I certainly can't complain about that as I wasn't particularly driving for economy.... :goodjob:
Can people if they can give average speed for the tank so we know what kind of driving you've been doing.
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I think our driving styles differ :P I like to smoke the people behind me every so often! HAHA!! One technique i have learnt is if people talegate me for long enough I just put it back a gear and floor it....they hate the smell and smoke so they change lanes or BACK OFF! hahaa
When we used to do that in our (now traded) CRDi it didn't used to smoke :Shocked: and if it did they wouldn't have smelt it anyway .. they were too far behind :whistler:
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On my recent weekend away (to Lakes Entrance), my CRDi, according to the trip computer, averaged 4.4l/100km.
I certainly can't complain about that as I wasn't particularly driving for economy.... :goodjob:
Can people if they can give average speed for the tank so we know what kind of driving you've been doing.
The trick is to keep the revs low and use the huge amounts of torque it has to keep the fuel use down, in normal driving, no more than 2500 rpm should be needed, from a start, don't rev out first gear, get it into 2nd as soon as your rolling, when cruising keep the rpm in the 1500 to 2000 area.
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The trick is to keep the revs low and use the huge amounts of torque it has to keep the fuel use down, in normal driving, no more than 2500 rpm should be needed, from a start, don't rev out first gear, get it into 2nd as soon as your rolling, when cruising keep the rpm in the 1500 to 2000 area.
What I've found is that it is often hard to keep up with traffic if you are only limiting yourself to 2500rpm in 1st or 2nd.
It an attempt to keep up, I often go higher than that maybe to 2800-2900 because I find when you then go 1st to 2nd, the revs drop right to 1900rpm or so where there is peak torque for the next gear.
If you are limiting yourself to 2500rpm what is your strategy to keep up with traffic. Are you using more throttle than I am but nevertheless changing at 2500rpm?
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Can people if they can give average speed for the tank so we know what kind of driving you've been doing.
From memory, average was 74kph over a distance of 640 kilometres..... :)
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What I've found is that it is often hard to keep up with traffic if you are only limiting yourself to 2500rpm in 1st or 2nd.
I agree.
On minor streets it's possible to change just above 2000rpm and drive quite happily, but if you try this on major arterial roads you find yourself starring at the front grill of a Kenworth filling your rear view mirror. Not pleasant watching someone behind you forced to brake when accelerating off from the lights because they are just about to run up your arse. I'm getting about 5.9km/l around town & 5.0 on the Hwy with 25k on the car (Crdi).
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DPF regeneration... Is that what happens when the fuel usage is sky high. I usually drive with the "real time" usage in the onboard computer, and during the month we had the new diesel, I've noticed 3 times it's incredibly high. It's easy to confirm when happening, when you let go of the pedal, it should read 0.0/100km still moving, yesterday when I noticed it read 1.3-1.7. And in general it's just high, going downhill at 80km/h in 6th, gentle on accel and usage was above 6, normally would expect 2-3. It's tough to tell what to expect really, all depends on conditions but easy to tell something is very wrong.
First time I noticed had driven 120km on new refill, the overall usage said 5.5l/100km and this happened for the next 30km, when it went back to normal the overall was 7.2.
My dealer did talk about the regeneration, and as long as its "new" would happen more often. Said the car had good economy after 8000km, but the regeneration would happen once in a while, measured from more factors like numbers of engine starts.
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Yeah, I'm pretty sure it's the DPF. The same symptoms as others described.
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Yeah, I'm pretty sure it's the DPF. The same symptoms as others described.
Lucky we don't have them in OZ i30's then :happydance:
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My dealer did talk about the regeneration, and as long as its "new" would happen more often. Said the car had good economy after 8000km, but the regeneration would happen once in a while, measured from more factors like numbers of engine starts.
Look at this table: http://www.poraba.com/usage_other_view.php?type=25888&carid=11497 (http://www.poraba.com/usage_other_view.php?type=25888&carid=11497). This is my log of all regenerations :) Maybe I'm a liitle too much into this but I hate the fact that the dealers lie about some things just to sell you a car.
I filled the tank from almost every possible gas station in Slovenia (and once in Poland) and I get consistent results with all of them. ~700 km +/- 30 km. Last week, I have driven ~800 km without stopping the engine and the filter regenerated twice in this period.
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That's very interesting to see actually, so it's quite simple if around every 700km or so. And the duration of around 30km isn't totally off, matches pretty well with your numbers. Will take a few notes when it happens again, see if its the same logic :)
Glad to hear it's normal though, and cause of the DPF, didn't know. Was quite a worrying experience the first time.
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Was quite a worrying experience the first time.
Same for me. Especially because I interrupted it during regeneration and the smell of the heated metal in the garage was really not pleasant.
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Can anyone tell me how the DPF regenerates. If it is mounted on the exhaust pipe, how does it use more fuel, exhaust is exhaust! I thought they regenerated if driving on a freeway and enough exhaust heat is present. :question:
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I beleive to regenerate fuel is injected late/in the exhaust stroke, to increase temperatures to the point of being able to burn off the junk in the dpf
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'Normal' exhaust temperatures are in the range of 300-400 °C (OBD-II data), but during regeneration, the temperature in the exhaust is increased to ~700 °C. Additional fuel is needed for that, of course. And as I see it, faster you go, larger volume of exhaust gases must be heated and thus, higher consumption during regeneration is produced...
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Just for the record - RUBBISH - my new i30 is quite economical!
I am a newbie on this Forum and live near York in North Yorkshire.
I picked up my MY2011 light blue i30 1.6 Comfort CRDI (Manual Gearbox) last Thursday from Nottingham Autopark. I've driven around 250 miles, on a mix of A roads and motorways and with a little town work thrown in. I've kept the revs below 2500 and used sixth gear whenever I could - the car is highly geared. I achieved just over 62 mpg according to the on-board computer, and I'm quite pleased with that. The car has done 4200 miles now.
I'm really pleased with this car having come down from a 2006 3 litre diesel Vauxhall Signum which I have driven for 41000 miles. The i30 drives and handles well and basically for the price (cheap!) there is nothing cheap about it. I like the road tax which costs a mere £30 per year (the Signum was £285) which was one of the main factors why I bought the i30.
Best wishes
Phil
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Well said Phil....
I think you experience is echoed by almost everyone in this club.... :goodjob: :goodjob: :goodjob: :goodjob: :goodjob:
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Welcome aboard Phil. I like Yorkshire and York.
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Welcome Phil... A really nice introductory post ! :happydance:
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sadly no update from squirrell48 yet. i want to know if things have improved. i just got back from a 1115 km drive from 49 ltrs. up and down the east coast.
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I fuelled up today at 1008 kms but put 60 litres in it.
Happy with that :)
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Can't complain about that
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20 months ago when my car had around 3,000 kms on the clock I travelled from Eastern Melbourne to Millicent in SA for work, did a bit of driving around there off road afterwards and got back to Melbourne before filling up. 1098 kms in total, the fuel light came on about 10 kms before I filled up. Around 52 litres to refill. I was doing between 100 and 110 kms/hr as the road signs permitted, air conditioning was on for around 1.5 hrs. I thought it was a miracle and even considered going to church on Sunday to give praise. However I didn't , but guess what - it just keeps happening anyway. I fill that little sucker up to the brim and my missus does over 700kms in rush hour city driving before it needs filling up again. My only complaint is the cobwebs on the filler cap.
Rock solid. Last year we went on a 3000 km + trip in it covering Adelaide, Wallaroo, Port Augusta, Port Lincoln, Streaky Bay. Two adults, two teenagers, a 6 x 4 trailer, Kayak and all gear (fishing kit, wetsuits, clothes, food, etc) Air conditioning on full blast. At one point the outside temperature registered 47C, I thought rubbish. We stopped and got out for around 2 seconds before conceding that it was 47C. The car engine temp was rock steady, no issues. Fuel economy suffered with the trailer but I'm not complaining.
It never ceases to amaze me how nippy our car is. Get it up on boost at 2700 rpm and the sucker flies.
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My only complaint is the cobwebs on the filler cap.
That is a great line... :rofl:
It never ceases to amaze me how nippy our car is. Get it up on boost at 2700 rpm and the sucker flies.
They sure are an amazing motor for a 1.6 litre :mrgreen:
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It never ceases to amaze me how nippy our car is. Get it up on boost at 2700 rpm and the sucker flies.
Are you saying we need to rev past 2700 rpm to get real performance. I need to give that a try. Have been trying too hard for economy and keeping it below 2000 rpm.
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My fuel conomy is quite good for now I must say..
I have approx 2,500 km on the clock and it is 5,9 lit/100 km according to BC. Mostly shifting between 1,900-2,500 rpm. But what I find interesting is the fact, that I don't recall noticing the DPF regenerating so far?
neoto: You do a lot of km :D I checked your "logs" on poraba.com a bit better this time..
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It never ceases to amaze me how nippy our car is. Get it up on boost at 2700 rpm and the sucker flies.
Are you saying we need to rev past 2700 rpm to get real performance. I need to give that a try. Have been trying too hard for economy and keeping it below 2000 rpm.
once a week it is good to give them a quick rev say to 3,500 3,800 quick don't keep them reving too long or too high just a rev out quick through the gears is good, as this gives the primary variable vien in the turbo a good work out to stop them carboning up & becoming stiff, as if that happens you notice a torque loss.
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My fuel conomy is quite good for now I must say..
I have approx 2,500 km on the clock and it is 5,9 lit/100 km according to BC. Mostly shifting between 1,900-2,500 rpm. But what I find interesting is the fact, that I don't recall noticing the DPF regenerating so far?
neoto: You do a lot of km :D I checked your "logs" on poraba.com a bit better this time..
Yup, I'm now at over 24.000 km (from April 15th's 1500), doing daily commutes on relations Ločica-Ljubljana or Tržič-Ljubljana. Anyway, the DPF is apparently regenerating at ~700km in all Czech made i30 with CRDi engine (local dealer tested multiple cars to confirm it). It looks like the manual is wrong :)
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Hey Allan and all you others there in the "motherland" ( UK) ... :happydance: want good economy...see this 2009 unit on eBay....claiming 67 MPG !!!
http://www.ebay.com.au/itm/hyundai-i30-67MPG-DIESEL-ESTATE-2009-/150677987226?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item23151b9f9a (http://www.ebay.com.au/itm/hyundai-i30-67MPG-DIESEL-ESTATE-2009-/150677987226?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item23151b9f9a)
We in Oz, have a saying...." tell'um their dreaming"..... :Shocked:
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On a daily basis my wife flogs our 1.6 diesel to work and back in rush hour traffic. Max speed limit on the road is 80 km/hr. 10 kms to work and 10 kms back, stop/start driving through plenty of lights.
With a complete disregard for fuel economy she get's 700km+ to a topped off tank of diesel every time - with an 1/8 of a tank left showing on the gauge.
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instroe
I'm glad she doesn't get her hands on my cars. 10ks to work, it wouldn't even be properly warmed up in either direction. Sounds like she's angling for a new car. :disapp:
btw how do you "flog" a car at 80 kph
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She's just quick away from any standstill, foot to the floor to get up to 80. Everyone's the same when it's time to go home - especially Friday.
If this model from VW ever get's into production it'll be a winner. 0.9l/100km
http://www.volkswagen.com/vwcms/master_public/virtualmaster/en2/unternehmen/mobility_and_sustainability0/technik___innovation/Forschung/1_Liter_Auto.html (http://www.volkswagen.com/vwcms/master_public/virtualmaster/en2/unternehmen/mobility_and_sustainability0/technik___innovation/Forschung/1_Liter_Auto.html)
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About the VW I agree, as expensive as F1 is, you can see why we need it. Energy regeneration, drag reduction etc. Now if I could just get my VP Commodore down to 0.9l/100.....Hmmmm :happydance:
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That's easy. Push it to work and back, it'll help keep you fit too.
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PUSH A VP :rofl:
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At 20,000 km regularly getting 5.9 -6.0l/100km in my i30cw auto, without conciously driving for economy although I've never been a rip and tear merchant :P
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Last I got with my 1.6 CRDi 6-Spd was 472.2Km's topping up to 43.477L. Roughly 10.86Km/L. Anyone know what could be causing this? I drive about 15Km's to and from work (at about 30-90Km/h) with 70% highway. Running aircon @24*C Auto always. Taking care to carefully warm up the car (for turbo) and cool down the car (for turbo).
I'm up to about 2055Km's right now and have NEVER ever beat up on it. Highest it's seen is about 3kRPM. But during my daily commute, I just drive like everyone else and go along with traffic.
Tires are all inflated to 32PSI as stated on the door sticker. Car tracks straight so I believe it is within alignment.
Any thoughts as to why I'm getting such a rubbish fuel economy?
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Last I got with my 1.6 CRDi 6-Spd was 472.2Km's topping up to 43.477L. Roughly 10.86Km/L. Anyone know what could be causing this? I drive about 15Km's to and from work (at about 30-90Km/h) with 70% highway. Running aircon @24*C Auto always. Taking care to carefully warm up the car (for turbo) and cool down the car (for turbo).
I'm up to about 2055Km's right now and have NEVER ever beat up on it. Highest it's seen is about 3kRPM. But during my daily commute, I just drive like everyone else and go along with traffic.
Tires are all inflated to 32PSI as stated on the door sticker. Car tracks straight so I believe it is within alignment.
Any thoughts as to why I'm getting such a rubbish fuel economy?
I could not say why, but in some cases, k is not the true measurement hours motor is runing for would be more accurate. what are the weather temps? how long in time does it take you to cover the 15k's to work?
also is it hilly or flat where you drive? & is road surface smooth?
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Your fuel consumption calculates for those of us in Oz, to 9.21L/100k which is how we measure over here.
The worst I've ever seen was 8.9L/100 from our auto & that was because we were only doing very short trips & the car couldn't warm up. Here are some things that I would do / consider.
1. Your engine is still new with only 2055 K's. I'm told things get better as it loosens up.
2. Weather is a factor & with a heavy diesel engine block to heat up, some fuel is used achieving this.
3. I set my A/C to come on manually. If it's hot or de-humidifying is required I use it, otherwise not.
4. I do not waste time or fuel warming the engine before driving. There is very little difference in stress on the engine, provided your not climbing hills or required to drive at high speeds. Treating the throttle like an eggshell allows you to drive this way. By asking the engine to do a little work, actually helps the engine warm up rather than idling, doing nothing. Diesels use very little fuel at idle, but long idles should be avoided. There is some discussion as to the requirement to idle down the engine at the end of your drive. Personally I don't do it UNLESS, as the book states, I have stopped after prolonged high speed, say for refueling. I live near a freeway and 110 is common for our car, but coming home I have a 1.5k downhill slope (no throttle), then traffic lights & 60 k speed limits to home. To me that cools the engine adequately.
5. Fill the tank to the brim & take the car for a nice gentle drive away from cities to see what country economy is like.
Hope this helps. :neutral:
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a possibility is your useing the computer as a guid, i also double check when i fill up.
while i was looking for a new car b4 i got my first i30 CRDi. i test drove a new For Focus Turbo Diesel 2litre 6 speed manual, it's computer was reading average L / 100K of 27L / 100K average. i asked salesman at the time but he could not tell me why. but with cp's short term could show high then long term could improve. i'll tell you what made my 5 speed CRDi use a lot of fuel! towing a 8 x 5 box trailer with two harleys on the back at speeds up to 110kph ( done it with ease but used some extra fuel!!! )
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Your fuel consumption calculates for those of us in Oz, to 9.21L/100k which is how we measure over here.
The worst I've ever seen was 8.9L/100 from our auto & that was because we were only doing very short trips & the car couldn't warm up. Here are some things that I would do / consider.
1. Your engine is still new with only 2055 K's. I'm told things get better as it loosens up.
2. Weather is a factor & with a heavy diesel engine block to heat up, some fuel is used achieving this.
3. I set my A/C to come on manually. If it's hot or de-humidifying is required I use it, otherwise not.
4. I do not waste time or fuel warming the engine before driving. There is very little difference in stress on the engine, provided your not climbing hills or required to drive at high speeds. Treating the throttle like an eggshell allows you to drive this way. By asking the engine to do a little work, actually helps the engine warm up rather than idling, doing nothing. Diesels use very little fuel at idle, but long idles should be avoided. There is some discussion as to the requirement to idle down the engine at the end of your drive. Personally I don't do it UNLESS, as the book states, I have stopped after prolonged high speed, say for refueling. I live near a freeway and 110 is common for our car, but coming home I have a 1.5k downhill slope (no throttle), then traffic lights & 60 k speed limits to home. To me that cools the engine adequately.
5. Fill the tank to the brim & take the car for a nice gentle drive away from cities to see what country economy is like.
Hope this helps. :neutral:
Excellent post thanks Phil :goodjob:
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Re your tyre pressure....I know the sticker says 32..but you will find that 36-38psi will aid economy and if your running on good roads, your will not be disadvantaged comfort wise...
Be patient, they do take a while to run in and loosen up.... :D
Elle B
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Well from my home to the highway takes about 5 minutes drive (about 1Km of 20kph driving inside a residential community). Then on-ramp to the highway and takes anywhere from 7 to 15 minutes to complete the whole highway until my exit depending on traffic. from exit, it's about 500 meters to the office.
The highway has an equal uphill and downhill slope for the whole duration of the drive and is asphalted with a good bit of road noise (not sure if that's attributed the road not being smooth).
I can say that with the fuel light on, I only get about 45L inside the tank before the pump clicks off. After the 1st click, I stop (we're not allowed to pump gas. Fuel station clerks pump for us).
I shift just before 2000RPM though and I regularly cruise in 6th at around 1600RPM, sometimes going as low as 1400RPM and the engine doesn't feel like it's labouring.
I live in the Philippines right in Manila and temperatures here nowadays are around 24-33*C.
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Well from my home to the highway takes about 5 minutes drive (about 1Km of 20kph driving inside a residential community). Then on-ramp to the highway and takes anywhere from 7 to 15 minutes to complete the whole highway until my exit depending on traffic. from exit, it's about 500 meters to the office.
The highway has an equal uphill and downhill slope for the whole duration of the drive and is asphalted with a good bit of road noise (not sure if that's attributed the road not being smooth).
I can say that with the fuel light on, I only get about 45L inside the tank before the pump clicks off. After the 1st click, I stop (we're not allowed to pump gas. Fuel station clerks pump for us).
I shift just before 2000RPM though and I regularly cruise in 6th at around 1600RPM, sometimes going as low as 1400RPM and the engine doesn't feel like it's labouring.
I live in the Philippines right in Manila and temperatures here nowadays are around 24-33*C.
In those conditions your economy should be half what it is (In my opinion) ... Could it be a fuel quality issue? :cool:
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My thoughts too. I'd been filling up at very busy Shell fuel stations using the Shell Fuel Save Diesel. Would anyone recommend Caltex Diesel?
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Caltex diesel gets mixed reviews on here the premium Diesel (Vortex?) seems to get a good wrap but sometimes the standard Caltex Diesel (from the Supermarket owned Stations) gets a lesser rating..
Problem is we are usually talking about these fuels in Australia, UK or Europe.. Not sure how your brands amd /or outlets compare with these places :cool:
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jfdelacruz
In the Philippines you probably do need to use your air cond on AUTO.
A lot of our members are getting up to 63-63 litres by deliberately running their tanks NEARLY dry and the filling to the brim with fuel. This is the ONLY way to be certain how much fuel you used. Unfortunate, that you can't fill your own car. Stopping at the first click is way short of full. Diesel filling takes a fair amount of time because the fuel foams, so I guess even asking the attendant to fill slowly to avoid the 1st click is out of the question. :disapp: