MK7 GTD - Real Life MPG

[Happy Hippo]

I was forced to use a standard shell diesel as apparently there was no stock of their usual fuelsave version.

Are there 3 Shell diesel variants? I thought fuelsave was the standard Shell, I have only ever been able to get fuelsave or V-Power for the last few years.

There was a warning note on the pump stating that fuelsave was currently unavailable so standard diesel was being supplied. This was on the A14 in deepest Suffolk near Ipswich.

[dippy_x]

I've said the same about the acc Andrew and was shot down in flames by the know alls who know best. I've used it quite a lot on journeys and mpg is really good with it.

I did this test as well on one of my runs down to Manchester.  Got some of my worst mpg's!  I find that ACC is just too useful not to use when on long runs.

[Misterp]

I was at 45 around. Town and loads of a road driving for the first half tank the second half tank had me down to Mid thirties

[jmc]

I didn't think this was to bad 



The car has only done 390 miles and was half motorway and half A roads

[C2K]

That's good going, i'd be happy with that.

[Skinnee D]

Back up to 45mpg today. It's no warmer than yesterday, but it's not raining and oil temp monitoring didn't indicate a hint of regenning.

MH - what change do you notice in oil temp during a regen?  Would appreciate knowing as I've failed to figure this out.  Thanks.

[monkeyhanger]

Back up to 45mpg today. It's no warmer than yesterday, but it's not raining and oil temp monitoring didn't indicate a hint of regenning.

MH - what change do you notice in oil temp during a regen?  Would appreciate knowing as I've failed to figure this out.  Thanks.

When the car has decided it wants a regen before it is up to temp (because it really needs to), you will find that the oil gets up to 80C as quickly as normal (6.5/7 miles), but 80 to 90C takes a lot longer - I assume the DPF is pulling heat away from the engine to forcibly start the process. This is the forced/active regen.

When the car is well up to temp and running above 94C (and I have seen up to 101C), it is definitely regenning. If you are on a journey long enough to satisfy the full DPF regen process, then the temp drops back down to 93C, even down to 90C. This is the passive regen.

[AlanH]

I drove from the Midlands up to Northumberland yesterday. First 12 miles on twisting B road, the remainder on M1, M18 and A1. Total distance around 225 miles. Decided to set Eco mode for the entire trip, with ACC at 70mph (real world probably 67mph). My average from start was 55mpg, so pretty happy with that.
Interestingly, the return journey in the evening with the same settings and same route only managed 49.5mpg.

[monkeytennis]

Is anyone else submitting theirs to Honest John's real life fuel economy register? I try and do this as much as possible:

http://www.honestjohn.co.uk/realmpg/volkswagen/golf-vii-2013

Current averages are 44.5mpg for manual and 43.6mpg for DSG

[AlanH]

Is that register based on long term, on a single tank or what? Doesn't seem particularly scientific.