MK7 GTD - Real Life MPG

[dippy_x]

Got 48mpg on the way home yesterday and 47 on the way to work today - hope it lasts, I've probably averaged 49mpg indicated over the last 150 or so miles, the preceding 150 miles were diabolical though!

Could the milder weather we have been having the last few days be helping?

[monkeyhanger]

Got 48mpg on the way home yesterday and 47 on the way to work today - hope it lasts, I've probably averaged 49mpg indicated over the last 150 or so miles, the preceding 150 miles were diabolical though!

Could the milder weather we have been having the last few days be helping?

We say milder weather, but it hasn’t really got milder in the North East, it just hasn’t dipped as far as expected for this time of the year – I’ve had the tiniest bit of frost on one day since owning the car and most days it has been 4C to 10C. I don’t expect my mpg to dip 15% when the ambient temp has dropped from 8C to 3C and I haven’t been making use of any heating devices.

The milder weather would help, if colder spells had you hammering your battery with lots of fan heat, heated seats, heated rear window etc because the alternator will be working overtime and causing your mpg to dip on shorter journeys. I haven’t been using all that at all, so the only advantage is maybe that slightly warmer ambient temp meaning that my car has taken maybe a mile less to warm up. With synthetic oil that is thin even at colder temps, the biggest cause of low mpg in the moderate cold will be the extra load on the battery. If I can go a full tank with decent mpg then I think I might have turned a corner.

[Misterp]

Got 40mpg on the way into the office today. Things are looking better

[dippy_x]

Well,  I broke my record today.  Drove home from Glasgow to Edin,  approx 60 miles.  Got 55.2mpg.  That's me sitting on the motorway with adaptive cruise set to 75mph.  I seem to be getting my best mpg making this journey.  Going from Edin to Glasgow I only seem to get 45-ish

[matt2]

There has been some gusty westerly winds this week - could it make that difference heading into a 25mph headwind?

[Happy Hippo]

First full tank of fuel gave an indicated 50.3mpg, actual mpg was 48.3. Mixed driving reasonably gently to speed limits with mixture of motorways and regular 12 mile commute cross country with 3 mile through town. Aircon left in auto at all times. Slightly annoying but having taken it down to 40 mile range only managed to get 43 litres in to the tank.
Generally impressed and 3 mpg better than my Scirocco 170 over same roads, expect that it will improve by a good 10% once run in

[monkeyhanger]

My mpg has dipped again on shorter journeys. Below 12 miles journey length, the car seems to settle for 44mpg right now, and 15+ miles gives me 48-49 mpg. I have seen my oil temp vary a lot between 90 and 97C depending on whether i've been driving it moderately hard and it (seemingly) is going into regen, and low load where it has an oil temp of 90C. Seems like my car is running a little cool when it is not being driven hard - i'd expect an average "warm" oil temp of 93-95C - maybe the cooling system is working a bit harder than it should, making the oil take a bit longer to get to temp and keeping the temp a little lower than it should be. The effort taken to overcool and running the car a liitle cooler anyway might be affecting my mpg negatively. Anyone else seen this on theirs? My car is pretty much 4C cooler than the Scirocco was, at every load scenario.

As per Happyhippo's comments, the "empty" or near empty indication on the MK7 is very cautious - the car is probably good for another 50 miles on "empty".

[mcmaddy]

what fuel you using now Matthew?

[monkeyhanger]

what fuel you using now Matthew?

Still on the last of my Esso, will be filling up today or tomorrow. Will try either Sainsburys or Tescos, although Tescos is a few miles detour from work to the nearest one (Kingston Park), and Sainsburys is right on my commute.

What kind of results are you getting now, and what fuel are you using?

I'm really surprised to see my GTD running on average 4C cooler than my Scirocco for every load scenario. Not sure whether it's intentional design or my thermostat operation is a little off (but within tolerable limits).

[mcmaddy]

using esso at the minute and even though my work commute is only 4 miles, longer journeys still give high 40s low 50s in the cold. sainsburys have got that spend 60 quid and get 10p off a litre offer on again. I think maybe the winter diesel is dragging the mpgs down slightly.