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VAG 1.9 TDi engine fuel consumption

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Andrew

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Mar 24, 2002, 12:11:13 PM3/24/02
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Greetings,

I would be interested to hear of average fuel consumption 1.9 TDi
powered cars of any VAG badge. My SEAT Leon 110bhp car (red i)has
averaged 45.2 mpg or 6.3 ltr/100km over its first 20,000 miles. Having
had 4 Peugeot diesels before that which all averaged almost exactly the
"official" figure I am left wondering whether I have a car that needs
some adjustment or may have a problem. As both the SEAT handbook and the
government VCA site say, poor consumption may be an indication of a
problem with the engine.

It is also the first car I have owned that will have been tested under
the new 1998 EU regulations and I wonder if they are less realistic than
earlier tests or motor magazine tests.

Martin

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Mar 24, 2002, 1:15:22 PM3/24/02
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Bora TDI 115
MFI 2 Currently showing
2500 mls
Ave Speed 48MPH
Consumption 50.4

Cheers
Martin


"Andrew" <aw...@spamspamspam.ukonline.co.uk> wrote in message
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Jim McC

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Mar 24, 2002, 3:15:03 PM3/24/02
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VW Passat 115BHP pd (red D and red i) , averages 54 mpg miles 28,000 mainly
motorway with a short town journey.

"Martin" <mca...@btinterREMOVEnet.com> wrote in message
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Yebo

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Mar 25, 2002, 3:03:28 AM3/25/02
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My wife averaged 6,08 l/100km for the first 45000km of our 2001 Jetta 110bhp
(South Africa). It is still improving.


"Martin" <mca...@btinterREMOVEnet.com> wrote in message
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CJJ

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Mar 25, 2002, 1:40:11 PM3/25/02
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My 110 bhp Golf TDI has averaged 46 mpg over 52,000 miles and 3 years. But
the consumption is very dependent on driving conditions. My commute is 16
miles of dual carriageway, and consumption varies from 52 mpg on a free run
to 45 mpg on a congested morning. The best I've seen was 60 mpg at an
average 60 mph over 3 hours on an empty French Autoroute.

Turning the Climatronic Air-conditioning of doesn't seem to make much
difference on mine despite the claims that this hits consumption.

Chris

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nos...@north.yorks

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Mar 25, 2002, 1:58:16 PM3/25/02
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On Mon, 25 Mar 2002 18:40:11 -0000, "CJJ"
<cj...@spamfree.altavista.co.uk> wrote:

>My 110 bhp Golf TDI has averaged 46 mpg over 52,000 miles and 3 years. But
>the consumption is very dependent on driving conditions. My commute is 16
>miles of dual carriageway, and consumption varies from 52 mpg on a free run
>to 45 mpg on a congested morning. The best I've seen was 60 mpg at an
>average 60 mph over 3 hours on an empty French Autoroute.
>
>Turning the Climatronic Air-conditioning of doesn't seem to make much
>difference on mine despite the claims that this hits consumption.
>

My mpg has dropped by about 3% since changing the front tyres from
Michelin Pilot to Goodyear Eagle Ventura. ( 51mpg to 48.5 mpg same
routes and usage over several months) on a 115hp Golf TDI.

Anyone else experienced this with tyres ?

Robert

CJJ

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Mar 26, 2002, 1:37:21 PM3/26/02
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That's interesting as I had looked at the Goodyear's before changing my
Dunlops for Exaltos. Tyres do have different rolling resistances, so it is
not surprising. And grippy tyres will have lower life and higher resistance
than skiddy tyres. You take your choice!

Chris

nos...@north.yorks

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Mar 26, 2002, 3:08:32 PM3/26/02
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I had read that the Goodyear's had a high rolling resistance but didnt
expect to see real difference in mpg in normal use.

I'll know better when I change the tyre again in 17k miles time !

Robert

Dave Le Good

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Mar 30, 2002, 6:00:10 PM3/30/02
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115 Sharan 5 speed auto 22000 miles 30 mpg in town 43 ish motorways.

Dave

Gurj Bahia

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Apr 2, 2002, 4:53:23 PM4/2/02
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Oct 2001 1.9TDi (130BHP) Passat 5 Speed Tiptronic Auto

So far only done 5,500 miles with at best 42MPG (though based on
fuel put in and miles per tank it works out a couple of MPG less).
I guess the digital readout is a bit generous.

42MPG is based on 80+ mph motorway driving and a small
amount of urban driving.

Sounds like this might be low, though my previous 2.0i 16V rover 620
4 speed auto never managed better than 32MPG.

I think I'll book it in for a check.

Gurj


Chris Hewitt

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Apr 3, 2002, 2:33:56 PM4/3/02
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> So far only done 5,500 miles with at best 42MPG (though based on
> fuel put in and miles per tank it works out a couple of MPG less).
> I guess the digital readout is a bit generous.

the engine doesn't start to feel loose till nearly 10k ..and the figures
will improve steadily till that point at which time they'll stablilise.

> 42MPG is based on 80+ mph motorway driving and a small
> amount of urban driving.

mpg also starts to tail off noticably once you creep above 80mph... 65mph is
about the best cruising speed for mpg [but no fun whatsoever].

> Sounds like this might be low, though my previous 2.0i 16V rover 620
> 4 speed auto never managed better than 32MPG.

42mpg sounds pretty normal to me give the factors above..

> I think I'll book it in for a check.

give it another 4.5k ..then have the first service (IMHO).

CH


Jim McC

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Apr 13, 2002, 5:48:34 PM4/13/02
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Sounds about right 80mph is a bit on the high side to expect anything other
than average mpg figures. Try easing the throttle a little more and take the
average motorway speed down to 65 - 70 , when I did this my mpg figure
increased from 48 mpg to 52 !


"Gurj Bahia" <gurj@NO_SPAM.hotmail.com> wrote in message
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Frank

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Apr 14, 2002, 12:13:11 PM4/14/02
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I have a Passat 1.9TDi(110bhp) and on a recent trip to Glencoe in Scotland,
a journey of 370 miles I averaged, according to the computer, 60 mpg, but on
the return journey 55mpg. My speed was 80 mph on the motorway approx 250
miles and the rest of the journey at 60 mph.
Regards
Frank Casey

"Andrew" <aw...@spamspamspam.ukonline.co.uk> wrote in message
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Andrew

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May 1, 2002, 3:22:55 PM5/1/02
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Thanks guys for all the figures.

Since I last wrote I've been from the southern side of the M25 where I
live to the Isle of Sky. I managed to achieve 49 mpg on 2 tankfuls but
now seem to be back to the 45.5 I was getting before.

It does seem that VAG diesels are very sensitive to the way you drive
them. Any comments?

Anyone know the significance of the red D and or i on the TDi badge? I
presume that it indicates the build standard of the car but have yet to
fine a sound explanation.

In article <a7l53p$4dm$1...@knossos.btinternet.com>,

Chris Hewitt

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May 2, 2002, 2:21:58 AM5/2/02
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[snip]

> Anyone know the significance of the red D and or i on the TDi badge? I
> presume that it indicates the build standard of the car but have yet to
> fine a sound explanation.

single red i:
TDI 110 engines

red d and i:
TDI 115/130 PD engines

red t, d and i:
TDI 150 PD engines

CH


Craig H

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May 2, 2002, 4:53:48 AM5/2/02
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And the new 100 TDI PD, I read, has red D and I

In the UK at least the 150 TDI Golf is badged as GTI with no reference to
TDI

Cheers
C
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Frank

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May 1, 2002, 4:08:24 PM5/1/02
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I was told that the red i on my 1999 Passat indicates that its 110bhp as
opposed to 95 bhp
Regards
Frank Casey

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Leroy Curtis

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May 2, 2002, 5:18:41 PM5/2/02
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In article <aaqlpt$catsk$1...@ID-106712.news.dfncis.de>, Chris Hewitt
<use...@chrishewitt.net> writes
No, the PD 150 should be badged GTI, with a red I. The only way to tell
it from a petrol 1.8 Turbo is by looking under the bonnet or checking
the gear lever.
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Leroy Curtis

Please replace "nospam" with "baram" in my address if you wish to
reply by Email

rasler

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May 2, 2002, 11:46:48 AM5/2/02
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"> single red i:
> TDI 110 engines
>
> red d and i:
> TDI 115/130 PD engines
>
> red t, d and i:
> TDI 150 PD engines"


Almost right but the red D and I can also be a 100 bhp pump duse.

Jools.

"Chris Hewitt" <use...@chrishewitt.net> wrote in message
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Chris Hewitt

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May 3, 2002, 10:15:36 AM5/3/02
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>> single red i:
>> TDI 110 engines
>>
>> red d and i:
>> TDI 115/130 PD engines
>>
>> red t, d and i:
>> TDI 150 PD engines
>>
> No, the PD 150 should be badged GTI, with a red I. The only way to tell
> it from a petrol 1.8 Turbo is by looking under the bonnet or checking
> the gear lever.

yes.. though there's quite a few all red 'tdi' one's on my usual crawl round
the M25 each morning. The 'gti' badging is specific to the UK so anyone
that's bough an import abroad (and not had the badge changed) or that has a
lazy dealer who couldn't be bothered to rebadge the car during the PDI will
have red 'tdi' instead of GTI...

CH

Andrew

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May 4, 2002, 8:53:27 AM5/4/02
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What about no red letters? The previous generation of indirect injection?

In article <aaqlpt$catsk$1...@ID-106712.news.dfncis.de>,
"Chris Hewitt" <use...@chrishewitt.net> wrote:

--
Andrew

Leroy Curtis

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May 4, 2002, 6:36:21 PM5/4/02
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In article <awde-996E45.1...@news.easynet.co.uk>, Andrew
<aw...@spamspamspam.ukonline.co.uk> writes

>What about no red letters? The previous generation of indirect injection?
>
TDi 90 Golf, Bora and Passat

Chris Hewitt

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May 5, 2002, 3:26:31 AM5/5/02
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> What about no red letters? The previous generation of indirect injection?

the original poster was inquiring of the significance of the red bits.. so
to keep the reply as simple as possible I didn't bother posting the
all-silver models.

EOM

Andrew

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May 6, 2002, 5:43:46 PM5/6/02
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Thanks for all the info Chris.

Sorry to add so many questions below but you seem to be the only person
who actually has deciphired the VAG engine code. SEAT cerainly haven't
or if they have they have hidden their expert.

So it appears that red i and d means a PD engine and red i only means a
pre-PD engine. Right?

On the ferry to Sky I was parked behind a Golf with a red i. The owner
said it was a 130 bhp engine. That would seem to conflict with what you
said.

That having been said, is there any way of identifying a PD and pre-PD
engine apart from diving under the air cleaner?

pumpe Duse in my dodgy German simply means pump injector which doesn't
convey much. I know how the old indirect engine conventional
hydro-mechanical injection pump works. Thanks to a burrow under the air
cleaner of a Citroen yesterday I can see how the common rail system
works. Does the PD system combine the function of injector and pump? One
per cylinder. Is a PD engine the same as a non PD VAG engine apart from
the injection system? What injection system does a red i engine use?

TIA

In article <B8F85A18.2103%use...@chrishewitt.net>,
Chris Hewitt <use...@chrishewitt.net> wrote:

--
Andrew

Chris Hewitt

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May 7, 2002, 1:39:57 AM5/7/02
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[snip]

> So it appears that red i and d means a PD engine and red i only means a
> pre-PD engine. Right?

AFAIK that's the story...

> On the ferry to Sky I was parked behind a Golf with a red i. The owner
> said it was a 130 bhp engine. That would seem to conflict with what you
> said.

There's always an exception to every rule.. there are no restrictions
imposed by the manufacturer on how the cars are ultimately badged and some
garages seem to make it up as they go along ..hence the proliferation of GT
TDi badges in certain enclaves of the UK [which personally I find a little
daft].

> That having been said, is there any way of identifying a PD and pre-PD
> engine apart from diving under the air cleaner?

You should be able to check the build codes sticker which [should be] hiding
under the carpet in the boot. That tells you *exactly* what spec
body/engine/transmission/options the car was originally built with.. but
only if you have a listing of the codes to decipher it from.

> pumpe Duse in my dodgy German simply means pump injector which doesn't
> convey much. I know how the old indirect engine conventional
> hydro-mechanical injection pump works. Thanks to a burrow under the air
> cleaner of a Citroen yesterday I can see how the common rail system
> works. Does the PD system combine the function of injector and pump? One
> per cylinder. Is a PD engine the same as a non PD VAG engine apart from
> the injection system? What injection system does a red i engine use?

I know it's the VW name for their common rail, direct injection system and I
now the earlier generations of engine didn't use it but stating much more
than that would be guesswork on my part. However, I know it's been discussed
in here before so a google groups' search should throw up something -
alternatively the VW Vortex site usually has the marketing documents that
explain the new technologies, which although they're in marketingspeak are
usually on the right side of readable/english.

Nice engines ..as long as you have oil in them so the bearings don't fubar!
:o)

CH


Bernd Felsche

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May 7, 2002, 10:06:04 AM5/7/02
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Andrew <aw...@spamspamspam.ukonline.co.uk> writes:

>pumpe Duse in my dodgy German simply means pump injector which doesn't
>convey much. I know how the old indirect engine conventional

Pump jet.... :-)

>hydro-mechanical injection pump works. Thanks to a burrow under the air
>cleaner of a Citroen yesterday I can see how the common rail system
>works. Does the PD system combine the function of injector and pump? One
>per cylinder. Is a PD engine the same as a non PD VAG engine apart from
>the injection system? What injection system does a red i engine use?

The cylinder head of a PD engine is different. Each cylinder has
it's own high-pressure pump... there's a medium-pressure feed into
the cylinder head. The pumps are driven individually off the cam and
injection triggered electrically (solenoid).

The main advantage over common rail is that it's cheaper for a small
number of cylinders partly due to the absence of external high-pressure
plumbing. For a 6-cylinder, common-rail is cheaper.
--
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Bernd Felsche

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May 7, 2002, 10:07:49 AM5/7/02
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"Chris Hewitt" <use...@chrishewitt.net> writes:
>> cleaner of a Citroen yesterday I can see how the common rail system
>> works. Does the PD system combine the function of injector and pump? One
>> per cylinder. Is a PD engine the same as a non PD VAG engine apart from
>> the injection system? What injection system does a red i engine use?

>I know it's the VW name for their common rail, direct injection
>system and I now the earlier generations of engine didn't use it
>but stating much more than that would be guesswork on my part.

PD is NOT common-rail. PD is also known as a "unit injector system".
An _old_ idea, with a new spin.

cnews

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May 7, 2002, 12:23:45 PM5/7/02
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"Chris Hewitt" <use...@chrishewitt.net> wrote in message
news:ab7p73$fqqn3$1...@ID-106712.news.dfncis.de...

> You should be able to check the build codes sticker which [should be]
hiding
> under the carpet in the boot. That tells you *exactly* what spec
> body/engine/transmission/options the car was originally built with.. but
> only if you have a listing of the codes to decipher it from.

It will have the engine output (power) in kW listed as below.

(where a letter in TDI is in caps it is red, in lower case it is silver)

1.9 TDI 66 kW (90BHP) - tdi
1.9 TDI 74 kW (100BHP) - tDI
1.9 TDI 81 kW (110BHP) - tdI
1.9 TDI 85 kW (115BHP) - tDI
1.9 TDI 96 kW (130BHP) - tDI
1.9 TDI 110 kW (150BHP) - TDI (although in the UK it would normally have
just silver GTI)

Coming soon - the FSI with the "I" in green.........

Also, have a look at http://www.chez.com/martijn/index.html

He has a photo of various "cam covers" for the TDI engines (click on TDI
engines)

HTH
C


Bob

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May 7, 2002, 1:54:55 PM5/7/02
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> 1.9 TDI 110 kW (150BHP) - TDI (although in the UK it would normally have
> just silver GTI)

Except on the Bora which will have an all red TDI


Chris Hewitt

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May 7, 2002, 5:38:43 PM5/7/02
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[snip]

> PD is NOT common-rail. PD is also known as a "unit injector system".
> An _old_ idea, with a new spin.

I stand corrected.. at least someone round here knows! :o)

CH


Tony

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May 7, 2002, 6:25:30 PM5/7/02
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"Chris Hewitt" <use...@chrishewitt.net> wrote:


The combined pump/injector system was first developed
in the 1930s by the Detroit Diesel Division of General
Motors, so it certainly isn't a new idea.


martin goldby

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May 9, 2002, 3:38:02 PM5/9/02
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"Tony" <a...@nospam.tv> wrote in message
news:kvkgdug42isegdu0b...@4ax.com...

> "Chris Hewitt" <use...@chrishewitt.net> wrote:
>
> >[snip]
> >
> >> PD is NOT common-rail. PD is also known as a "unit injector system".

The PD engine has a low presure fuel pump from the tank to the injectors, no
common rail and no rotary pump. The injector compresses the fuel to 2000 bar
driven by the cam shaft through two stages (intermediate and high presure),
there is then electronic release into the cylinders that also gives pilot
injection. Each injector has it's own fuel pump in effect, it should be
noted that these systems deliver the highest injection presures available on
any system used in automotive manufacture, very small injector nozel changes
seam to be able to liberate the power difference between the 115 and the
130 bhp engines.

MG

<snip>

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