DSG in neutral

[Corey_R]

I agree more with this except that I get 0L/100km in drive at stop as well as neutral at stop.

You shouldn't be getting 0L/100km when the car is in neutral. The only way for that to occur is if the engine has stalled
When you're coasting too a stop, and the revs are still high enough, the motion of the car with the gears engaged to keep the engine turning without consuming any petrol. Once you get under a certain RPM the engine needs fuel again to keep it from stalling.
You can test this down a long hill. Don't use the accelerator and the fuel consumption will be 0. Put it into neutral and the fuel consumption will increase as the engine is idling.

If it didn't do this you'd roll backwards if you were taking off from an incline, which I believe it doesn't do?

No - the car uses the brakes to do this. If it realises it's on an incline, it'll keep the brakes applied for ~2 seconds after you've removed your foot to place it on the accelerator.

[MurphyTheElf]

You shouldn't be getting 0L/100km when the car is in neutral.

In fact, at rest with the car idling, your fuel economy is terrible. Since you are going zero distance yet still using fuel, no matter how little, the fuel economy in litres per 100km is effectively infinity (divide by zero). Which is why the MFD intelligently changes the measurement from litres per 100km to litres per hour.

[Corey_R]

yep, exactly.

[booya]

In fact, at rest with the car idling, your fuel economy is terrible. Since you are going zero distance yet still using fuel, no matter how little, the fuel economy in litres per 100km is effectively infinity (divide by zero). Which is why the MFD intelligently changes the measurement from litres per 100km to litres per hour.

But surely it takes more fuel to move a car than it does to keep one on but still?

[Corey_R]

yes... but it's moving....
If you're not moving, then you're not increasing the km, just the fuel used, hence as [b]Murphy[/b[ said, you're infinitely higher fuel consumption. Hence the change from L/100km to L/h

[MurphyTheElf]

But surely it takes more fuel to move a car than it does to keep one on but still?

Sure does. But how long will it take you to get from A to B if you are going 0km/h? Forever, ignoring seismic activity and wormholes of course. Even if you had one million litres of fuel, you'd use the lot before you got to B. Ergo, your economy is rubbish.

[kennyc]

I always put it in neutral on my old pos cos the fuel economy was crap.
But in the golf i leave it in drive, fuel economy is great and not much difference leaving it neutral.