Official Fuel Economy Thread (formerly Highway economy).

[team_v]

I'm not sure if this is the right spot but rather then starting a new topic I thought it would be appropriate to ask in this thread.

When collecting a new VW specifically a 147 Tig from a dealer should it come with a full tank of petrol. Is it common practice for VW to fill it with 95 or 98 octane fuel?

Lastly, I know this is a topic of great debate but what are people's opinions about the best petrol for the Tig? I was thinking of using BP Ultimate.

Should have a full tank of fuel (mine did)
And should be filled with premium unleaded (either 95 or 9.
I believe mine had 95 as i got the tune done and it was a bit gurgly, but fixed itself after i put 98 in.


I only use BP Ultimate.
Not worth the "savings" to put lesser fuel in.

[ralp2dam]

Should have a full tank of fuel (mine did)
And should be filled with premium unleaded (either 95 or 9.
I believe mine had 95 as i got the tune done and it was a bit gurgly, but fixed itself after i put 98 in.


I only use BP Ultimate.
Not worth the "savings" to put lesser fuel in.

Thanks team_v. Surely if VW recommend 98 octane the dealer would be doing themselves a disservice if they put anything else in. However, how can the average customer tell?

Anyone else have any opinions for the best fuel for the Tig?

[johnw]

Just wondering if anyone know why the consumption value from the MFD is always lower than the actual consumption by about 0.7-1L/100km? is it to make the car seem more economical?

I do a calculation of the fuel put in (until the first click, which is quite accurate as usually no more fuel will go in after the first click) and the distance covered and over the last 5-7 tanks, it's consistently been over the MFD value. MFD is gives 10.2 when actually it's closer to 11 ish.

I don't trust the MFD remaining range value for this reason.

[jimbomort]

Just wondering if anyone know why the consumption value from the MFD is always lower than the actual consumption by about 0.7-1L/100km? is it to make the car seem more economical?

I do a calculation of the fuel put in (until the first click, which is quite accurate as usually no more fuel will go in after the first click) and the distance covered and over the last 5-7 tanks, it's consistently been over the MFD value. MFD is gives 10.2 when actually it's closer to 11 ish.

I don't trust the MFD remaining range value for this reason.

You drive a Tig? I ask as doesn't appear so from your sig?

I have found our Tig to be consistently 0.2 to 0.3 under, so still optimistic, but pretty close. I dont know why they are optimistic, may be to do with the way they calc/average versus real world. I dont remember seeing anything addressing your question but there is lots of stuff in this thread on economy and real versus mfd, so may be worth a trawl thru

[Transporter]

Just wondering if anyone know why the consumption value from the MFD is always lower than the actual consumption by about 0.7-1L/100km? is it to make the car seem more economical?

I do a calculation of the fuel put in (until the first click, which is quite accurate as usually no more fuel will go in after the first click) and the distance covered and over the last 5-7 tanks, it's consistently been over the MFD value. MFD is gives 10.2 when actually it's closer to 11 ish.

I don't trust the MFD remaining range value for this reason.

To be sure, what is the exact error of the MFD, you would have to measure the fuel you put in the tank, since the service station pum has also an error. The error of 50ml/L is 10.5L/100km instead of 10L/100km if there would be 0 error.

[johnw]

No I don't drive a tig but just thought VW would be using the same method for consumption across the range.

I should measure the amount going in I guess but its hard unless the tank is fully drained (side of the road no fuel).

Guess I can fill it to the "brim" as an indication of full instead of the first click :-P

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[Prodigy]

What sort of consumption should i be getting from our 147tsi?

At the moment we are averaging around 500kms to a full tank which seems really bad, car is used majority of the time in stop-start traffic but i still would of thought i'd be getting better figures than that.

[Transporter]

Depending from the traffic it could be anything between 10L - 12L/100 or even more, so it looks OK to me.
For normal city driving you should around 10L/100km.

[team_v]

What sort of consumption should i be getting from our 147tsi?

At the moment we are averaging around 500kms to a full tank which seems really bad, car is used majority of the time in stop-start traffic but i still would of thought i'd be getting better figures than that.

The 147 shouldn't be any worse than the 125 in reality, it is such a light tune.

I get around 10 if i am heavy footed, if i drive with fuel economy in mind i can net around the high 8's for city driving.

Usually i end up with 600-650k per tank.

[ralp2dam]

What sort of consumption should i be getting from our 147tsi?

At the moment we are averaging around 500kms to a full tank which seems really bad, car is used majority of the time in stop-start traffic but i still would of thought i'd be getting better figures than that.

I've got a 147 and have been monitoring over the first 1500k. I'm averaging 9.9L, however, I have had a country drive in there.