Hi atti_5,

As per my post:-
I used the fuel calculator page mentioned by Scorpio to provide all figures which I believe are correct and accurate.

31.04 UK MPG gives 9.1l/100km which I think is NOT good.

I don't understand how you arrive at 7.58l/100km unless you are working with US gallons.

I used 54.92 litres (taken from my receipt) of diesel to go 375 miles(603.5km).
54.92 litres is 12.08 UK gallons.
375 miles divide by 12.08 gallons = 31.04 miles per UK gallon.
or expressed in metric
603.5 divide by 54.92 = 10.98km travelled per litre of diesel
and
603.5km divide by 100km = 6.035
so
54.92litres divide by 6.035 = 9.1litres of diesel to travel 100km

Yes I know the tank capacity is about 58 litres, there was obviously about 4 litres already in the tank when I filled up before starting my test. If I had driven til the tank went empty maybe I would have got more mileage out of the tank, but it is not wise to do that otherwise you have to prime the fuel pumps again!

Hope thats clear now !

 

Hi Jim,

I only have one type of Gallon in my conversion table, which equals 3.785 liters as mentioned in my first post to this topic.
Now I see this is US gallon, because You are calculating with 1 Gal = 4.546 liter (crazy customary, non SI systems :devil: ).

So I have given up now: Your calculation is correct and you have consumption 9,1l/100km. :angry2:

I suggest that You go in contact with some other 2.0 CRDi owners - as this engine is build into many cars of the Hyundai/Kia corporation: Elantra, Sportage, etc... to see their consumption...

When I was byuing my new Accent I also considered 1.5CRDi as alternative (which is derived from Your engine, just with 3 valves), and also considered Elantra 2.0CRDi together with the same Tucson You drive, as my next car. Now I have got concerns if Diesel engine is the right way to go.

Jim, Kind wishes and still enjoy Your car, think on those having V6 engine and being happy with consumption 12l/100.

Attila

 

Hi friends,

Looking on the many-many topics dealing with fuel consumption I suggest to put all the information in an organized way into a small database. This should give everybody good information whether his car's consumption is all right, eg. similar to other owners, can compare it to data given by manufacturer and can give a good picture for new byers, what they can expect.

I just created a small excel sheet now and filled in my values + values provided by Jim.

I ask kindly everybody who is interested just to fill in his data into the sheet and send his entry to me Atti_5@centrum.sk

I will publish then the sheet as it is growing up.

Please use SI metrics system only.
1 mile=1.609km
1US Gallon = 3.785 liters,
1UK Gallon = 4.546 liters

For other than brand new models please also fill out Engine Type Field (first 5 digit of your engine Identification number - without serial number please.

Your comments, ideas regarding the database will be highly appreciated.

*** Note: as I am not permitted to upload an xls file I just renamed it to zip. Please do not run it via Winzip, just rename it to xls and open in excel.***

Kind wishes, Attila

 

Hi Atti,

Thanks for the spreadsheet, its a good idea.

Sorry for the slow response - I've only just got back from holiday, but I will have a look and see what other information could be included (perhaps a comment field describing the general day-to-day driving for that fuel consump test, e.g. urban, extra-urban, typical journey distance).

Also because I only just finished my test just before going on holiday I have yet to write my findings and complain officially to Hyundai.

Yes - I still like my Tucson very much. Just a pity the hungry engine puts a bit of a damper on it!! And as pointed out by some owners it may be that a bit more driving will loosen it up and improve the situation. So for the next couple thousand miles and in the meantime while discussing with Hyundai, I am going to relax a bit, open her up and enjoy driving B)

And to any other Tucson 2.0 CRTDi owners, PLEASE let us know what your own experience and opinions are, Thanks.

I think the following thread is also ongoing and relevant....
Letter from Hyundai UK

Peace
Jim

 

Hi Neil,

Maybe the winter season has a lot to do with it. Just wait until you get a few thousand kilometres AND for summer. I'm sure fuel consumption will drop to a more conveniable level.
However I must say, test driving by specialized magazines prove a consumption about 30 to 40 % higher than what Hyundai promised (I wonder in what conditions these test drives were made).
I'll have mine end of April but don't bother much at the moment; I agree with Crowie --> ever looked at the price of a BMW X3 (price !!!!) and its consumption.

 

Hi All

I have been keeping up with all your comments and agree and have been hassling both Hyundai and my dealer since Dec. I have experienced all the problems previously listed, but last week in the snow I had occasion to run in 4 wheel drive and the trip computer immediately gave me a more acceptable reading, although I was taking it easy 40-50 ish in 4th and 5th, one point it read 37 mpg (converted 44mpg). Back to 2 wheel drive and the consumption dropped again. So at the weekend I ran it on a 4 again fuel consumption converted into 36mpg on country roads. Has anyone else experienced this, could it be a computer mapping fault? I ll be informing my dealer and Hyundai as I am waiting on info from them regarding what they are going to try next.

Will keep you posted

Like you all love the motor apart from FC

Dazzle

 

Dazzle,

Thats interesting - I will try it out myself on 4WD tonight (according to the literature 4WD even when turned on is supposed to cut-out above 20mph, but remains switched on). Of course normally I doubt anyone would drive far enough in 4WD to notice the MPG change, so well spotted!

I'll let you know how I get on later.

Cheers
Jim

 

Right - back again!
Before I continue lets just add the section from page 53 of the Tucson Owners Manual, section 3. Average Fuel Consumption meter. It shows a picture of the Type A and Type B LCD panels, and then bullets points explaining the average fuel consumption as follows;

o This mode calculates the average fuel consumption from the total fuel used and the distance since the last average fuel consumption reset.
o The total fuel used is calculated from the fuel consumption input.
o For an accurate calculation, drive more than 0.31 miles.
o The meter's working range is from 0.0 to 99.9 L/62 miles.

Before setting off, I turned on 4WD, and did NOT reset the MPG Meter (it was reading 22.5). I did a few slow tight turns to confirm 4WD was working, yep! It bights so hard on tarmac, that I stalled the engine!

Then I set off up the A1, at around 60mph. The MPG Meter did not change. I suspect this is because the Trip meter was showing 240miles, and so I would need to travel a fair distance to make the average fuel consumption change substantially. I got bored with it not doing anything, so still with 4WD turned on and still travelling at 60mph I reset the MPG Meter. It showed "---" for about quarter mile, then sprang into action, reading about 56MPG then gradually came down to about 28-30MPG.

This is the highest I have ever seen it read.

BUT after a couple of miles I then turned off 4WD and tried the same again, (all while travelling at 60mph). For a moment the MPG Meter shot up to 119.9MPG
Seriously, thats what it showed, then rapidly came down to between 28-30MPG.

However I am certain that after many more miles travel, that reading will come down lower and lower, back to around 22-23MPG. 4WD disengages above 20mph so shouldn't have an effect on fuel consumption.

It is unlikely that 4WD is connected in any way to the MPG Meter. But feel free to challenge me on that - I'm not an expert.

I don't think the fact that 4WD is turned on or off is really making any difference. If you think about it, the manual says "calculates the average fuel consumption from the total fuel used and the distance since the last average fuel consumption reset". Now if my Trip meter is showing 240miles distance, and presumably it uses this distance when calculating the fuel, then if I am already driving at 60mph when I reset the MPG Meter, its going to think "Wow, I've travelled 240miles on this tiny little teaspoon of fuel I've used during the last few seconds", and so it displays the ridiculously high MPG for just a moment.

If you stop the vehicle, reset the MPG Meter, and then set off, the MPG Meter shows very LOW MPG to start with and then builds up.

My question to you Dazzle, is;

- did you reset the MPG Meter when you used 4WD?
- if so, did you reset it alone, or also the Trip meter?
- and were you travelling when you reset it?

Although this is an interesting experiment for the MPG Meter, I still think the real test is simply to manually calculate distance travelled per tankful to get the MPG figure.

I am still going to keep on trying your "4WD affects the MPG" theory for a bit more, because its difficult to gauge these results over a short distance.

Finally can anyone explain what the manual means by "The meter's working range is from 0.0 to 99.9 L/62 miles." ?

Cheers
Jim

 

Hi Jim,

Nice to see you back. I was also off for one week having a flue.

Just a short note for now: The average fuel consumption calculator works independently from daily trip meter! The fuel consumption calculator calculates from the point IT was reset (by pressing and holding the appr. button in an Accent - I am pretty sure the on board computer is same on all recent Hyundai/Kia models).

You SHOULD time to time reset also average fuel consumption calculator - so it displays ---- (no value) until first hundreds of meters).

Have a nice day, Attila

 

Hi Atti,

What you say makes sense.

The average fuel consumption calculator works independently from daily trip meter!

I did wonder, and I guess that the Average Fuel Consumption must have its own internal "mileage-so-far" meter that is seperate from the Trip meter.

Incidentally I also have today written to David Walker at Hyundai UK, quoting this thread and the concerns of several people, and my own tests and findings. I will let you all know what response I get.

Best wishes
Jim

 

Hi All

I seem to be getting about 30 MPG from my tuscon, but I'm more upset by the snotty letter from Hyundai UK saying that they are not going to fix the trip computer to read in UK gallons.

Am I asking to much ?
Has anybody else got this good news?

 

Hi Normbar,

Well I wrote a longish letter to David Walker at Hyundai explaining my concerns 2/3/05, and a week later I received acknowledgement only, saying he will get back to me after further discussion with his Customer Services Executive. I am giving Hyundai UK the benefit of the doubt and will wait another week to see how they respond. Any longer and I'm going to chase them up.

I'm not surprised they might say they won't do anything about the MPG Meter. I expect if they did something for one person, that would set a precedent to do the same for all vehicles. I imagine from a technical point it would require some kind of reprogramming. If its a new chip that would be more difficult than software reprogramming.

Like you I feel that they should get it right for the country they selling to.

Jim

 

Hi all,

Two weeks to the day since writing to Hyundai UK I received a call from Bob Brampton from the customer services department (the same guy I spoke to about 2 months ago when I originally voiced my concerns).

Bob says that Hyundai UK are taking the matter of the fuel consumption seriously, and that the Korean division are currently investigating the problem. He has promised to get back to me on 1st April after Hyundai Korea have performed some more tests.

Something he mentioned, but which I took with a pinch of salt, was that there had been a couple of customers with Tucsons where a return spring had not been connected properly to the brake pedal, so that although safe, it was apparently applying very slight pressure, and therefore drag on the vehicle because the brakes were being applied very gently, thereby having an affect on fuel consumption over long distance. Hmmm. Not sure whether to believe that! I can't really see that just the weight of the brake pedal would be sufficient to operate the brakes. Needless to say I checked my brake pedal, and it seems to return correctly to its topmost position.

However, in fairness he sounded quite genuine and concerned about the overall problem, and although he gave me the usual story you have probably read elsewhere in the forum, about the results for the fuel consumption averages listed in the brochure being prepared by an independent government approved facility, running the vehicle with no wind resistance, accelerating incredibly slowly, in ideal conditions in order to achieve the stated figures, he did agree that the mileage figures being reported by owners of the Tucson should be better.

Just as an aside, I have now done 3700 miles, and on my latest tankful of petrol which took 60.20 litres to fill completely, I did 379.5 miles. For this I wasn't bothered about economy, just drove the car how I liked, usually around 75mph on A-road.
This worked out to be 28.66 UK MPG. Once again, way below even the minimum Urban figure of 30.7mpg the brochure states, and personally I feel is a terrible figure for a Diesel engine.

Jim

 

Hi all, I picked up mine yesterday and initial reaction is I love it!!. Now I have read the fuel consumption thread, you have me worried. I live in South Wales and commute to Bristol, so the fuel figures were important to me when choosing the vehicle. I am going to take things gently until I've got a 1,000 miles on the clock. I will start monitoring the fuel consumption after that. I have the CRTD GSI, so have'nt got the trip computer to confuse me and most of the journey is motorway and dual carriageway, so I am expecting the advertised figures. Keep the information coming into the forum please.

Rich

 

Hi there Rich,

Welcome to the forum

Sorry this thread makes kinda bleak reading :mellow:
Its the last thing you want to hear when you've got a new motor!

I hope your longer journeys will make for better fuel consumption than some of us. Let us know how you get on when you start monitoring your fuel.

Above all enjoy your tuc-tuc. Despite the fuel issue, I am otherwise still very pleased with my choice of vehicle. I think its a great drive, smooth, nice handling, and nicely finished internally and looks great externally, and a pretty good sounding stereo (it gets lots of hammer from my CD's ).

At your earliest opportunity get it in some mud and try out that 4WD !! Hey it looks better dirty :wink2:

Have fun
Jim

 

Hi All, Thought I would post an update. I have checked my FC after 6 trips to and from work + a bit of local driving. From a full tank, I did 340 miles (547 km). Refilling took 47 ltrs (10.34 imp gall) This calculates out at 32.9 MPG. or 8.6 l/100km. Most of my mileage is on motorway, with very few holdups, so I would expect to get good figures. I am still running in with 460 miles on the clock, so hoping for an improvement as she loosens up. Against some figures that have been posted, mine seem pretty good, but still short of the 39.7 official combined figure I am expecting to get. As an aside, my previous car was a Toyota Carina e 1800 petrol. The official figures for that was combined 40 MPG. I got between 39 and 41 MPG consistently, and from new, so I haven't got a lead foot . I've got to say, I love the Tuc. Good fun to drive and respect from other road users is nice. If the official figures had been low 30's combined, I probably would have gone for a Rav4 (and missed out on an excellent vehicle). So I am with the others on this forum that are feeling a bit miffed with actual FC against the promised figure.

 

Just purchased a Tuscon CRTD GSI. Filled up with fuel until pump cut-off. Due to concerns over mpg I decided that I wanted a rough guide to my own mpg, so after only 113 miles I filled up again to cut-off and I found I'd used 13.17 litres - giving me an mpg of 38.8. I know this was with gentle driving and a mixture of road conditions and cannot be totally relied upon as an acccurate estimate of mpg - but it is considerably better than many contributors to this forum. I only hope its not a fluke!!!

 

Hi dmorgans and welcome to the forum. It must be the Welsh air giving the good fuel figures :thumbsup: It was a bit worrying to start with, having payed for the Tuc and then finding this thread and the figures that some were quoting. My initial FC wasn't to bad and I am sure will improve as the engine loosens up. It sounds like you have the best figures to date. Let us know how you get on over the coming weeks.
Rich

 

I bought a crtd cdx in january and after 2500 miles am unable to get better than 30 mpg on a run and 25 running around town. One of the problems with FC must relate to the fact that the auto box will not and cannot be coaxed to shift into 4th gear under 38mph, the engine is therefore flogging along at 2000rpm at 30mph. NOT HAPPY

 

I've just 'topped up' again and while the mpg is better than many on the forum I am disappointed. First of all the figures:

170 miles at 21.45 litres.

This works out at 36mpg.

Again, becasue I've not done 1000miles yet I've driven fairly carefully. But since the majority (2/3's) of my mileage was done on dual carriages I would have expected considerably better - at least the 39.8 ('combined') quoted in the Hyundai literature.

At the moment I can't see how anyone will obtain the 48mpg figure for 'open raod' driving (must be all down hill).

Will the mpg improve with mileage - as the engine loosens up. Does anyone have experience of this happening?

 

I put my second full tank in yesterday. Total mileage is now 816 miles.
47.8 ltrs and 345 miles on the trip.
I calculate this to 32.8 mpg.
Most is motorway and keeping the speed to 65 - 70 mph. I can't think how I can drive more economically and surely this is "open road" driving?
Will a loose engine really make that much difference? I see you are driving an auto box Vansav8r. From what you are saying, it sounds like the box isn't set up right. Doesn't an auto box change up and down on oil pressure? I'm driving a manual and I guess dmorgans doing the same?
UKJim. Any feedback from Hyundai uk? your earlier post said they were going to reply early April.

 

Must be something about the Welsh air !

I've just done a round trip of about 300 miles in Wales and the motorway back to Brum at a steady 80 mph back on the motorway.

The trip computer says 31.6 so I'd guess this equates to 38mpg UK gals. Still far short of what I'd expect from the official figures but an improvement over recent fillups.

I've now done 4500 miles and things have improved with miles but I can't see them getting much better. I've been driving as carefully as I possibly can (very frustrating) and can't see how I could improve my driving style any more.

Lets see how the next few thousand miles work out. :57:

 

I must admit I'd be quite happy with 38mpg at 80mph ( from Weebrian). That would mean that at a steady 65mph it should be possible to get over the 'magic' 40mpg (which no one in this forum has managed I believe). I haven't quite reached 500 miles yet, so I AM hoping the engine will loosen up and mpg improve.

PS It is a manual gearbox I've got

 

Please note that only a small part of the journey, 15%, was at that speed. The rest was probably at an average of about 45mph.

I wouldn't get your hopes up yet !

 

In that case - its not good - is it!!!!!


SCORPIO - any signs of that report on the endurance test for the Tucson?
Would like to see what its conclusions are with regard to fuel consumption!