What are you guys getting?

[GermanwithaVdub]

thanks for that reply. when accelerating hard in first or second gear the real-time calculator gets stuck at 99L/100km (i guess it cant go into triple digits) and that was even before the getting hte powerchip in. speaking of noise, i love the sound my tdi makes... sounds like there's a truck stuck in a refined euro shell hehe. i guess i should be driving more like a grandma to get better figures but its a bit hard when living in sydney oh but i just thought of something... at 2000rpm, in lower gears (1st to 4th), wouldnt that give significantly more engine resistance. so im thinking that although the burning of the fuel might be the most efficient as you said, it might have to compensate for the resistance of the engine slowing it down? just a thought...

[gldgti]

good advice... but one thing..

engine braking doesn't improve your fuel economy, and using the brakes wont worsen your fuel economy - EXCEPT where you slow unnecessarily and then need to accelerate again. (infact, the most efficient way to stop, fuel consumption wise, would be to turn off the engine competely, but do not do this, its dangerous). you could roll to a stop in neutral.... but dont, its a bad driving habit. the most efficient way to do this safely is to stay in a high gear and disengage the clutch before the revs go below idle.

the slower you accelerate, the better fuel economy you will have.

the most efficient point to drive your engine at is at peak torque (also peak BMEP for those who understand) (anyone wonder why you get crap economy in a revvy engine with peak torque at 5000 rpm?)

[GermanwithaVdub]

dont worry, my car isnt lacking in the firm acceleration department haha... all that torque in such a small car means the redline is so easy to get to. i think what you're saying with the saving of fuel by using the engine to slow down is that if you do it that way, the speed of the car causes the engine to keep the revs up. when you put on the brake and clutch/neutral, the engine has to start burning fuel to keep the revs up. if his GLD is manual then it would be the same. in fact i would argue any manual car uses less fuel if you use engine braking.

oh you mentioned that they use 0.5L/hr idling... mine uses 0.7! and if i have the heating/aircon on it uses anywhere between 0.8 and 1.1L/hr... whats all that about? i think ill mention it to the guys at the dealership when its first service is due... only a few months away now. and at the moment im running on the the stock wheels/tyres, im painting my other ones black this weekend but the fuel figures seem to be un-noticeably similar whether ive got the 225/45 tyres or the 195/65 tyres.

a friend of mine who has the identical car to mine also says he hits that 99L mark fairly easily.

[GermanwithaVdub]

never gotten below 0.7 over the life of the car. and i should clarify that my ecu isnt "chipped" (sorry used the wrong word) i should say powerbox instead of powerchip, i only recently got it, didnt want to get it before the engine had some miles on it. i think im going to take it out ive decided i love my car too much. oh well ill mention it to the blokes at the dealership but then again they're more interested in sales than fixing... or maybe i should mention that i might be thinking of buying a passat for the family that should make them jump to it thanks for the help guys - michael.

[smithy010]

Well, here are my preliminary (rough) figures for the blue mountains cruise day yesterday, which is basically the first time i've had the diesel out.
It was pretty hard driving up the mountains, and trying to keep up with all the mk3's and 4s, so i expected it to use a bit of juice, (that, and i still have a fuel injector return line leak), but the figures were somewhere around 5.5l/100...

Was going to fill up and find out exactly how much i used today, but i was out supervising some drilling near campbelltown, and the drillers filled me up out of their fuel cart... Can't turn down an offer for 20l of free fuel..

Pretty good figures considering the driving conditions i'd say.
I was also surprised at how well she pulled up the hills.

Cool

Smithy

[OvaltoJetta]

Jetta 2.0TDi

We did a 500klm round trip down south in WA starting in Perth 2 days after taking delivery with 150k on the clock and got 5.6l/100k ... cruise control on 110kph...impressive or what?

[mollins]

turbopassat

My '80 passat with a 1.6TDI gets 6L/100k's at 110-130kmph (highway driving) and about 6.5L/100k's around town. Im sure it would do ~5L/100k's if i didnt drive like an idiot and didnt have the max fuel screw turned right up. Still, pretty awesome for an old car thats usually full of stuff and isn't slow like the 1.5's.

[GoLfMan]

My '80 passat with a 1.6TDI gets 6L/100k's at 110-130kmph (highway driving) and about 6.5L/100k's around town. Im sure it would do ~5L/100k's if i didnt drive like an idiot and didnt have the max fuel screw turned right up. Still, pretty awesome for an old car thats usually full of stuff and isn't slow like the 1.5's.

where the hell did you find that mate
how does the 1.6Tdi go? BOOST IT UP

[mollins]

mmm... passat

where the hell did you find that mate
how does the 1.6Tdi go? BOOST IT UP

found it in brisbane... had to trek up and pick it up..

1.6TDI is unreal.. already got boost up from 7psi to 13. Im gonna intercool it then do some more injector pump mods.. hoping for 20psi before i need a copper head gasket and stronger studs... then onwards to 30....

ill get round to doing a write up with pics and everything one day when uni isnt so insane

cheers..

mike

[BeigeJet]

We did a 500klm round trip down south in WA starting in Perth 2 days after taking delivery with 150k on the clock and got 5.6l/100k ... cruise control on 110kph...impressive or what?

Hey JansJetta,

A couple of weekends ago the wife and I did a roundup trip from Melbourne to Victor Harbor of 1,600 km and got 4.7l/100 with cruise on about 105kph.

And for life of car we've got 6.1l/100. That's on 25,000km with mostly wife driviing in the city. We're impressed too!

What car Jetta do you have?

[gldgti]

1.6 turbo diesel.... INDIRECT injection, not TDI - Turbocharged Direct Injection...

just for clarification for when someone goes looking for a 1.6TDI and finds that they dont exist....

[sTeeDi]

For the life of the Car I've been getting 6.5L/100km through mainly city driving, I hope it begins to drop now that I've passed the first two stages of the long run in period for TDIs. I envy you guys getting less than 6.0L/100kms, hope it's just because of my running in of the engine (and maybe my heavy foot) that is causing the high fuel consumption.

I'm still running in my MY07 Comfortline DSG Golf. After finally getting the Dealer to flash the ECU because of my starting problems, what i find is after the flash the car drives a little more smoothly (not sure if its coz of the running in done so far), and i don't have problems crankin' the car anymore.

Will be heading down to Canberra this long weekend with the Olds, and it will be the first time for me to use the Cruise control after getting 7,500km on the clock, of course I'll have to be careful flogging the car due to the double demerits

[brackie]

City driving

Don't hit yourself over the head with your fuel consumption figures. I've notice that you don't have to do much driving in the city to greatly elevate the thirst. I can go to town (46km round trip) on 4.7L/100km driving on our windy, hilly Tassie country roads as long as I don't drive around while in town. If I have to do some shopping or deliveries that involve a lot of stop-start, then the consumption goes way up. Often it gets to the 5.5L/100km mark. And also it isn't consistent. Today I did a "there-and back" and I got 5.0L/100km.

My old Mk1 uses less fuel in town than it does on the highway!!

[BeigeJet]

Don't hit yourself over the head with your fuel consumption figures.

Hi Brackie,

Don't get me wrong, I know that consumption can vary and be quite different between city and urban cycles.
The thing that really amazes me is how low the consumption can be especially when compared to my other vehicle (2003 Camry V6) that doesn't have the same level of performance. 4.7l/100 for the Jetta vs 8.9l/100 for the Camry on the same round trip to SA and back.
I only use the MFD display as a guide and rely on actual litres at fill against odometer reading. This is done on an EXCEL spreadsheet (Yeah, I know I'm anally retentive!)
I find that the MFD display can be optimistic by up to 0.5l/100 when compared to my spreadsheet.
Around Melbourne the last fortnight the wife got 5.8 on a tank for 864 k but typically she gets about 6.2 l/100. I get 13.8 from the Camry to and from work.
All the figures I quote are from my you beaut spreadsheet. I use this also to keep the leasing company hones with fuel charges and manage my mileage for FBT purposes so that don't go under 25,000k pa and have to pay extra FBT.

Cheers!

[OvaltoJetta]

BeigeJet

2.0 TDi DSG
Currently on the 5th tank. It has been a mixture of freeway and urban driving. The Jetta now 350k on trip & computer says 680k to go. Have 3500k on clock and comsumption seems to be getting better with each fill.

City driving

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Don't hit yourself over the head with your fuel consumption figures.

I also noticed that the road surface makes quite a difference. The smooth bitumen gives a 1L/100klm better return than the rougher blue metal surface (approx 6 v 5), but that would go without saying as the rougher surface would enable better grip and stopping ability.