A2 Fuel consumption
- Thread starter Gexx
- Start date
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Robin Benie
Guest
Consumption
My '05 TDi SE 75 averages around 65 - 66 mpg. On a long run it goes up to 72ish and trogging around town takes it down to 62.
BUT - I notice that going much over 70mph causes a huge increase in consumption so I have my DIS set to warn at 70. Although I keep to the 70 limit I still keep up with most traffic and have I fun on the back roads too. Using the DIS to check current consumption does alter the way you drive and you end up trying to squeeze the last drop (while still driving sensibly). I do about 25000 miles pa after work hours so I'm not exactly just pootling about.
My '05 TDi SE 75 averages around 65 - 66 mpg. On a long run it goes up to 72ish and trogging around town takes it down to 62.
BUT - I notice that going much over 70mph causes a huge increase in consumption so I have my DIS set to warn at 70. Although I keep to the 70 limit I still keep up with most traffic and have I fun on the back roads too. Using the DIS to check current consumption does alter the way you drive and you end up trying to squeeze the last drop (while still driving sensibly). I do about 25000 miles pa after work hours so I'm not exactly just pootling about.
little_blue_tank
Member
I do periods where I do 140 miles per day and I found that my 1.4 petrol performs worse on Tesco petrol than any other.
P
Popeye64
Guest
Must admit i get nowhere near audi's acclaimed figures. My commute to work of 7 miles gives me around 48mpg (car doesn't get fully warm on cold mornings) and on the motorway where i cruise at around 3000 revs (which to the 75 tdi crowd indicates my speed 
) ) i acheive around 53mpg. I don't believe i'm heavy footed but accelerate up to around 2k in most gears-maybe i do have a problem???
Popeye64
) ) i acheive around 53mpg. I don't believe i'm heavy footed but accelerate up to around 2k in most gears-maybe i do have a problem???Popeye64
ben
Administrator
Hello.
I have updated the user profile fields with the ability to store your average fuel consumption and typical fuel use. Please take the time to update this information here:
http://www.a2oc.net/forum/profile.php?do=editprofile
This page can also be reached by clicking on the User CP button in the navigation bar, and then selecting Edit Profile in the control panel.
I will put together a page that summarises this information.
Ben
I have updated the user profile fields with the ability to store your average fuel consumption and typical fuel use. Please take the time to update this information here:
http://www.a2oc.net/forum/profile.php?do=editprofile
This page can also be reached by clicking on the User CP button in the navigation bar, and then selecting Edit Profile in the control panel.
I will put together a page that summarises this information.
Ben
P
Paul Dennis
Guest
Update on fuel economy
Since my last posting on this subject a few weeks ago the weather has got a little warmer and I've done one or two longer runs and also varied the fuel that I've used....either the standard BP diesel or the premium version. One of the trips was a return journey to Oxford (270 miles) on a mix of A and B roads, plus some dual carriageway and motorway driving. Half the journey was with 3 adults plus luggage in the car. The average fuel consumption has now reached 71 mpg.
I don't notice any difference with the type of diesel. I haven't consciously varied my driving style...smooth, changing up at ca. 2300-2500 rpm, down at 1300 to 1500 rpm..depending on road conditions, cruising at legal limits, and the occasional foot to the floor moment.
The engine (1.4 Tdi 75) has now covered 12,000 miles and I've noticed a marked improvement in smoothness and general tractability recently. I've put this down to the engine starting to loosen up. This probably accounts for the improved economy too.
Oil consumption has been low (less than 0.5L).
It's hard to understand why there is such variability in reported economy. I think big factors are: (i) length of journey. Anything less than 10 miles and the engine doesn't warm up: (ii) tyre size. There's an marked increase in rolling resistance with the larger tyres fitted to sport and some other versions. Mine has 175x65 tyres. Tyre size also affects the drag coefficient.(iii) Driving using a partially open throttle. Diesel economy drops off markedly at anything like full throttle. Long periods of driving at high speed will hit the economy (iv) weight.
These factors are all reflecteds in the design philosphy of the A2 1.2 Tdi 3L. Audi had to reduce tyre size, reduce weight, improve drag coefficient etc. to reach the famed 3L per 100km efficiency.
The car is a joy to drive, now I'm thinking about importing a 1.2 Tdi 3L. Any advice from anyone as to where I might lay my hands on one?
Paul
Since my last posting on this subject a few weeks ago the weather has got a little warmer and I've done one or two longer runs and also varied the fuel that I've used....either the standard BP diesel or the premium version. One of the trips was a return journey to Oxford (270 miles) on a mix of A and B roads, plus some dual carriageway and motorway driving. Half the journey was with 3 adults plus luggage in the car. The average fuel consumption has now reached 71 mpg.
I don't notice any difference with the type of diesel. I haven't consciously varied my driving style...smooth, changing up at ca. 2300-2500 rpm, down at 1300 to 1500 rpm..depending on road conditions, cruising at legal limits, and the occasional foot to the floor moment.
The engine (1.4 Tdi 75) has now covered 12,000 miles and I've noticed a marked improvement in smoothness and general tractability recently. I've put this down to the engine starting to loosen up. This probably accounts for the improved economy too.
Oil consumption has been low (less than 0.5L).
It's hard to understand why there is such variability in reported economy. I think big factors are: (i) length of journey. Anything less than 10 miles and the engine doesn't warm up: (ii) tyre size. There's an marked increase in rolling resistance with the larger tyres fitted to sport and some other versions. Mine has 175x65 tyres. Tyre size also affects the drag coefficient.(iii) Driving using a partially open throttle. Diesel economy drops off markedly at anything like full throttle. Long periods of driving at high speed will hit the economy (iv) weight.
These factors are all reflecteds in the design philosphy of the A2 1.2 Tdi 3L. Audi had to reduce tyre size, reduce weight, improve drag coefficient etc. to reach the famed 3L per 100km efficiency.
The car is a joy to drive, now I'm thinking about importing a 1.2 Tdi 3L. Any advice from anyone as to where I might lay my hands on one?
Paul
Just completed a 750 mile round trip to Scotland in my TDi 90. I wasn't aiming for maximum economy but I tried to keep the speed below 70 mph (mostly!) on motorways. This was mixed with steady 50mph drives on quiet Scottish roads as well as low gear driving on some steep and narrow tracks. Overall average was 63 mpg which is my best yet.
My ECON button doesn't make that much difference - unless it's very cold and I'm turning off the Auxiliary Heater!a2snow said:By engaging the ECON button I have transformed my mpg from mid 40s to 60+ mpg. How come no-one (including the Audi garage) suggested this simple solution to my previously posted fuel economy problems ??!!
JimbobA2TDiSport
Member
It also turns off the auxiliary heater (that comes on under -5 degrees) I believe, correct me if I'm wrong
Aikon
Past Member
589.6 miles on a tank, absolutely brimmed at 39.75 litres when I filled it so still another 3 litres/45 miles in the tank, DIS showed 65.4mpg (and 0 miles to go 5 miles previously!)
The figures work out at 67.43mpg unless my maths is wrong. Can't say I'm displeased with that!!
(And yes the ignition was on so the fuel gauge really was this low!!)
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