what fuel economy are you receiving from your car

Smillie13

Registered User
My 1.9TDI Avant shows 640 when full and averages around 42 - 44 mpg around town with 55 mpg on the motorway
 

Dan TheMan Welburn

Registered User
Mine was pitiful sunday gone i did 440 miles from £60 of diesel in my 1.9tdi se, mainly motorway driving, but a fair bit of traffic on the way back and a fair few miles diverted from m62 from bradford to harrowgate, worked it out with price i paid for fuel, to be roughly 43mpg, think its about time i gave my car a full service :-/
 

mookie

Registered User
Well the full horror of how poor my MPG is has dawned on me today when I worked it out...

490miles from fill up to fill up (from the same remaining range and point on the fuel gauge), which works out as just over 38mpg. And it's a 1.9tdi.

Thankfully I did cotton on to this at the weekend, and then after a quick search on here realised my temp gauge should be at 90c not 70c, so replaced the thermostat ASAP and temps are now normal. So hopefuuuuuuuuully it should equate to a more normal tdi mpg :( and approx 180miles of that was one motorway trip too. I'm thinking EGR clean is next...
 

Dan TheMan Welburn

Registered User
Well the full horror of how poor my MPG is has dawned on me today when I worked it out...

490miles from fill up to fill up (from the same remaining range and point on the fuel gauge), which works out as just over 38mpg. And it's a 1.9tdi.

Thankfully I did cotton on to this at the weekend, and then after a quick search on here realised my temp gauge should be at 90c not 70c, so replaced the thermostat ASAP and temps are now normal. So hopefuuuuuuuuully it should equate to a more normal tdi mpg :( and approx 180miles of that was one motorway trip too. I'm thinking EGR clean is next...

My temp guage has also been tempremental, i thought it was the sensor at first so got ripped off by TPS £28 +VAT for the sensor which sells on ebay for £10, (i know silly me) but guage still sitting between 65-90 and never dot on 90, so i guess my next port of call is thermostat...
 

mookie

Registered User
Well mine went from a solid 70c with no fluctuation to now a solid 90c within about 10mins of 30mph driving. I just hope with the next fill up tomorrow the mpg increases accordingly.
 

quattrojames

Moderator
Staff member
Moderator
My temp guage has also been tempremental, i thought it was the sensor at first so got ripped off by TPS £28 +VAT for the sensor which sells on ebay for £10, (i know silly me) but guage still sitting between 65-90 and never dot on 90, so i guess my next port of call is thermostat...

Don't feel bad, the ebay sensor will be a copy part. I'd pay £30 for a genuine sensor everyday of the week.
 

marktdisport

Registered User
Usually the cts playing up the temp gauge will fluctuate fastly or go off completely.. If the gauge goes from 70-90 couple of mins at a time or so its the thermostat opening and closing so there will be the fault
 

stu_m

Well-Known Member
VCDS Map User
Well the full horror of how poor my MPG is has dawned on me today when I worked it out...

490miles from fill up to fill up (from the same remaining range and point on the fuel gauge), which works out as just over 38mpg. And it's a 1.9tdi.

Thankfully I did cotton on to this at the weekend, and then after a quick search on here realised my temp gauge should be at 90c not 70c, so replaced the thermostat ASAP and temps are now normal. So hopefuuuuuuuuully it should equate to a more normal tdi mpg :( and approx 180miles of that was one motorway trip too. I'm thinking EGR clean is next...

Hopefully the stat has sorted it!

I get from 44 - 52 depending on type of driving out of my tdi have had better, average is 48 the 44 is town driving in winter!
 

stu_m

Well-Known Member
VCDS Map User
Well mine went from a solid 70c with no fluctuation to now a solid 90c within about 10mins of 30mph driving. I just hope with the next fill up tomorrow the mpg increases accordingly.

Is that from stone cold?

Mine can take up to 25 mins to reach temp first thing in a morning but that's with the missus driving and always short shifting it warms up a little quicker when I drive just not in ten mins!
 

marktdisport

Registered User
If your car is taking 25 mins stu to warm up the stat is stuck open slightly so its stopping the water to get to temp should be hot within 5 mins really...
 

pbarlow0032

Registered User
Getting around 33 average in my 1.8t cabriolet after having it for a few weeks and a few hundred miles. Bit disappointed actually, seems a bit lower than the 1.8t I owned a few years ago.

temp gauge on mine seems to get to 90 after 10 mins and then drop way down again for a few minutes. Does this sound like a faulty thermostat or coolant temp sensor? Any sure fire way of finding out?
 

marktdisport

Registered User
Getting around 33 average in my 1.8t cabriolet after having it for a few weeks and a few hundred miles. Bit disappointed actually, seems a bit lower than the 1.8t I owned a few years ago.

temp gauge on mine seems to get to 90 after 10 mins and then drop way down again for a few minutes. Does this sound like a faulty thermostat or coolant temp sensor? Any sure fire way of finding out?
most likely thermostat m8... But you can plug vcds in and check for stored faults if the cts is faulty it will be there if there isn't a cts fault then your thermostat is faulty
 

stu_m

Well-Known Member
VCDS Map User
If your car is taking 25 mins stu to warm up the stat is stuck open slightly so its stopping the water to get to temp should be hot within 5 mins really...

It gets warm within mins at the heaters but at times can take up to 25 mins to get to 90 I must point out this is the missus driving and I bet she has the heating on full which won't help when I drive its closer to 15 mins to 90

It's had a new stat from audi not so long back when I did the cam belt as the old one was stuck slightly! It warms up quicker then it used to!
 

moggie93

Registered User
Hi mookie. I've got similar problems. The last week or so I've never seen over 40 mpg. It took nearly 9 miles for the temp gauge to hit 70. How hard was the thermostat to change and where on the tdi is it..
Cheers moggie.
 

marktdisport

Registered User
It gets warm within mins at the heaters but at times can take up to 25 mins to get to 90 I must point out this is the missus driving and I bet she has the heating on full which won't help when I drive its closer to 15 mins to 90

It's had a new stat from audi not so long back when I did the cam belt as the old one was stuck slightly! It warms up quicker then it used to!
yes m8 if the heaters are set full it will take some heat out the engine so yes will take longer to warm up..... Best bet is to try it with heaters fully off and time it to 90 and make sure it stays at 90 if it does this you have no probs
 

stu_m

Well-Known Member
VCDS Map User
yes m8 if the heaters are set full it will take some heat out the engine so yes will take longer to warm up..... Best bet is to try it with heaters fully off and time it to 90 and make sure it stays at 90 if it does this you have no probs

Once its at 90 it stays there all the time I often just have the heating at about 20 and it warms up steadily usually takes about 15 mins to get there never less then that though
 

marktdisport

Registered User
Once its at 90 it stays there all the time I often just have the heating at about 20 and it warms up steadily usually takes about 15 mins to get there never less then that though

that sounds normal to me bud
 

mookie

Registered User
Hi mookie. I've got similar problems. The last week or so I've never seen over 40 mpg. It took nearly 9 miles for the temp gauge to hit 70. How hard was the thermostat to change and where on the tdi is it..
Cheers moggie.

I found a couple of good threads about it and followed their advice, plus this is a very good guide for the 1.9tdi:

ElsaWeb - Removing, installing and checking thermostat

It's just behind the alternator as you look at the engine from the front, just follow the big pipe from the radiator bottom corner upwards to the engine block. My problem was I couldn't get the rad pipe off the plastic housing and so it was a bit of a fiddley chore with the pipework all still connected... but only really involved two bolts and some swearing (and I disconnected the big boost pipe in the way).

BTW after resetting my mpg average with the last 70miles on the range, covering about 30miles has yielded an average mpg in the middle 40s, which must be a good sign.
 

pbarlow0032

Registered User
So, my 1.8t on my morning drive to work takes about 8 miles/15 minutes to get to 90, then drops again and just about reaches 90 by the time I get to work (another 2 miles/5 minutes).
how much is a new thermostat, and is there a guide to changing it anywhere? Is there anyone with VCDS near Durham, I had a look on the vCDS forum but couldn't see anyone nearby? I guess I could take it to a garage? Would rather avoid expense, only just bought the car but the seller's not interested.
 

Harribo66

Registered User
i get around 44-45 mpg on a normal day. 7 mile comute to work.

on saturday i got 59.6 mpg on a 200 mile run and used between half and a quarter tank.i

have a 1.9 tdi 130
 

adamss24

Registered User
B6 avant 1.9Tdi with remap, Bv43 turbo, 18" wheels, EGR delete, will do 600 miles/960Km on a tank full/44Mpg on the DIS. Occasional high speed blast on motorway and commuting in London.

B6 V6 tdi quattro sport will do 500 miles/38Mpg on a tank with a thermostat stuck open at speeds over 100mph. Needs a service and is running on 17" alloy wheels...
 

Smillie13

Registered User
My best so far !!
2013-01-17134055.jpg
 

peposhi

Registered User
1.9tdi 130bhp Avant, automatic

530-550 with a tank of diesel for the last 3 months...
This month I'm playing around with the cruise control, a lot. Looks like I may get 650 - ish or even more. 340 from a half tank so far...
 

Smillie13

Registered User
I always use my cruise control it makes so much difference. :)
 
Cruise control might make you more disciplined in terms of not booting it everywhere but it will be worse that genuinely disciplined driving on the pedals.
 

simon.m

Registered User
just looked into mine being the 100bph tdi used 25l got just over 200miles but that is just school runs so 36mpg ish just 25l in again when for a short run 20miles max speed 60 but mostly 40mph 330miles brings it in at 60mpg and to be fair the cars dis is nears as spot on
 

peposhi

Registered User
Cruise control might make you more disciplined in terms of not booting it everywhere but it will be worse that genuinely disciplined driving on the pedals.

I actually think the cruise control was invented and meant to be for people with heavy right foot... like me :)
 
Peposhi your post made me laugh out loud lol :salute:

It's good for saving your license, especially when there's temporary speed restrictions. Like setting an in-car speed limit at 95mph.
 

da4

Registered User
This is what i'm getting
 

AndyF

Registered User
My 2.0 Avant does 25 mpg, with a bit of motorway driving I got it up to 28. Reading posts in this thread I'd get the same from a 3.0 Quattro!
 
Top