272TDI = Poor MPG

Big Nee · Oct 26, 2018

Hi

Picked up a facelifted A7 on a 64 plate 2 weeks ago and i am surprised at the poor MPG i am seeing.

On a carefully dirven run of 10 miles (7 of which is 60mph duel carriageway) and the rest country lanes i am getting around 34MPG in auto mode and around 37 MPG in economy mode. Around town i am getting late 2os in auto mode.

Is this normal?? because i am reaging of MPGs averaging 38 and mid 40s on a run in the same engine. My colleague has a 63 plate biTDI and averages 38 all day long ....

Do i need to flag this to Audi (its under warranty) or live with it and look at a remap ??

Thoughts Appreciated

Neil

paultaylor · Oct 29, 2018

Big Nee said:
Hi

Picked up a facelifted A7 on a 64 plate 2 weeks ago and i am surprised at the poor MPG i am seeing.

On a carefully dirven run of 10 miles (7 of which is 60mph duel carriageway) and the rest country lanes i am getting around 34MPG in auto mode and around 37 MPG in economy mode. Around town i am getting late 2os in auto mode.

Is this normal?? because i am reaging of MPGs averaging 38 and mid 40s on a run in the same engine. My colleague has a 63 plate biTDI and averages 38 all day long ....

Do i need to flag this to Audi (its under warranty) or live with it and look at a remap ??

Thoughts Appreciated

Neil

I have a facelift A6 272.

I can get 50mpg if I crawl to work on the motorway in economy mode and try to let the coast mode save fuel.

If I drive normal enough I can get 41

If I cruise at 80-100 mph motorways I can get 36

I don’t do much stop start driving so don’t really know yet.

Hope this helps

Baka · Oct 29, 2018

Diesels aren't great at short distances, especially when it's cold, if you kept going for another ten miles you'd get much better figures!

When I went down the shops (12 miles) in my 6 pot diesel, it would be reading about 33, by the time i got back home it would be more like 39.

desertstorm · Oct 29, 2018

As above diesel fuel economy goes down the pan in the winter especially on short trips and even more so on larger diesel engines. Another thing that doesn't help is the change to winter diesel that doesn't have quite the same energy content as summer diesel.
https://en.wikipedia.org/wiki/Winter_diesel_fuel#United_Kingdom
See this every year when the weather starts to cool down. Suddenly there's something wrong with the car because the mpg has dropped. If you hold onto the car till the summer you will see figures you might expect. In the meantime check the tyre pressures when they are cold. You may be surprised how low they are.

Big Nee · Oct 30, 2018

desertstorm said:
As above diesel fuel economy goes down the pan in the winter especially on short trips and even more so on larger diesel engines. Another thing that doesn't help is the change to winter diesel that doesn't have quite the same energy content as summer diesel.
https://en.wikipedia.org/wiki/Winter_diesel_fuel#United_Kingdom
See this every year when the weather starts to cool down. Suddenly there's something wrong with the car because the mpg has dropped. If you hold onto the car till the summer you will see figures you might expect. In the meantime check the tyre pressures when they are cold. You may be surprised how low they are.

Good shout on the tyres - ill check later

BTW i now udnerstand why my previous BMW diesal were loads quicker on a hot summers day !!!

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272TDI = Poor MPG

Big Nee

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paultaylor

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Baka

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Big Nee

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