Scirocco Central

In the summer with only sidelights on and using the aircon above 40mph (windows open below 40 if you need to stay cool – after that wind resistance negates any gains from not having the aircon on) I get around 50mpg (indicated – 46mpg actual) on my 12 mile mixed roads commute without driving it like a nun. On a longer spell at 80mph on the motorway/dual carriageway, a regular 35mpg each way journey yields about 55mpg (indicated). Mine is a manual 170TDI GT. Knock about 5mpg off those figures for the winter when you’re running your lights most of the time, wipers, heaters etc and the car taking longer to heat up.

I’d expect 10% less if driving a DSG – you only need to look at the official CO2 figures between DSG and manual to know that a DSG is around 10% thirstier. My dad drives DSGs and his car is always around 10% thirstier than mine when I have occasionally borrowed it. So a DSG in my hands, with my driving style would be giving 45mpg (indicated), not that car off your figures. Driving a DSG does come with a penalty, so when you are comparing peoples mpg figs – remember to not compare DSG and manual figures directly.

Got my new Golf GTD on Tuesday and mpg for that is about 50mpg (indicated) normally and about 45mpg when attempting a DPF regen (can’t believe it has attempted a regen with only 65 miles on the clock) doing my 12 mile mixed commute. Shell V-power diesel seems to improve my economy about 5% which almost negates the 7% cost premium over Esso in my locality, and the Scirocco was going through far fewer DPF regens when running it (presumably down to it’s purity vs standard diesel for a cleaner burn and less soot). Mk7 Golf reports suggest mpg does improve by about 10% vs “straight out of the box” figures as the miles go on (up to about 5k miles) with the newest versions of the TDI engines, not something I saw with my Scirocco.

Your car shouldn’t be taking 20 mins to warm up to normal operating temp in the summer, or even the winter. Something seems to be very wrong with that unless you’re driving like a nun on roads with no uphill stretches. Is your car doing lots of regens (idling at 1000rpm rather than 800 – gear changes seem to happen later/at higher revs, might smell quite an intense burning smell when stopped in traffic during a regen). If regens are being attempted a lot, it suggests that the car isn’t being driven in a way that will facilitate passive regens. Forced/active regens will hammer your mpg, the TDIs do seem to benefit from driven moderately hard at times so get the DPF working in the most efficient way (passive regens – when the car is under medium load and between 1800-2500 rpm – say doing 70mph on the motorway for 10-20 mins) and minimise forced/active regens.

On my 170 TDI I average around 55mpg without really trying. Today I paid attention to.the warm up time and distance for reference. With.an ambient of 13 degrees and driving at 60mph on an A road the car took 5mins / 5 miles to reach an indicated 90 degrees coolant temp and the oil temp was around 65 degrees at that point.

As per Cuprabob. 5 miles to water temp being 90C, Oil is generally 30C behind the water when warming up. My GTD mpg is abysmal right now, i'm hoping it is because indicated mpg (on the MFD) is close to reality e.g. 45mpg MFD = 45mpg actual (won't know until I have got through my first tank and fill up again). On the Scirocco, 50mpg MFD = 45/46mpg actual.

maisbitt wrote:As per Cuprabob. 5 miles to water temp being 90C, Oil is generally 30C behind the water when warming up. My GTD mpg is abysmal right now, i'm hoping it is because indicated mpg (on the MFD) is close to reality e.g. 45mpg MFD = 45mpg actual (won't know until I have got through my first tank and fill up again). On the Scirocco, 50mpg MFD = 45/46mpg actual.

But surly being a brand new car the mpg isnt going to be that great from the off?

whitedevil170: My scirocco was good from the off (apart from the step up in power experienced at approx 500km which I assumed was down to some running in program). 53mpg on the journey home it was achieving almost the same mpg as it is now.

Hoping this GTD improves a lot in mpg as the miles go on, it needs to improve quite a way just to match the Scirocco, let alone surpass it (it is supposed to be 20% better on fuel economy).

Evenin' all !

Referring back to my post here on 10th September, I have now worked out the cumulative MPG over the past three years (anorak or what ?!)

Covering approx 34,000 miles mostly on A & B roads with occasional belting up the M5 and back, my fuel consumption based on litres bought has been approx 54 mpg. That's starting with a "full tank" and then refilling at the last mileage mark used. Most of the journeys have been driver only although there are occasions with up to three passengers. The average of all the recorded MFD readings for consumption is 55.68 MPG but the calculated MPG is 53.60. (OK, I could give or take a dozen miles or a few litres of fuel, but it hovers around 53/54 MPG) so it looks like my particular MFD gizmo is being a weeny bit generous - or I've made a mistake in my spreadsheet....

Whatever the outcome for me, it looks like Higgy needs to prod buttock at the dealers.

D

Just thought i would post an up date!

The car has now been back a couple of times and been test driven - initially they did 2 x 14 miles and got 45mpg, however they didn't go over 1800 revs! Not being too happy they agreed to do it again, which they have just done and did 116 miles over the weekend.

We have been told the car is fine as the chief technician had it and he got average 46mpg over town and dual carriageway way. They then said that they saw 54mpg on the dual carriageway - this is what they actually did:

Drove in town for a bit and saw 45mpg (which is more than we ever see in town) then got on the dual carriageway and set trip to zero and saw 54mpg. However they never went over 60 and pretty much didn't go over 1800 revs as it wasn't their car and they had to look after it, plus didn't want to get a ticket! Basically we have been told that if we want to see that sort of MPG we should not "over" rev it or go over 60. We mentioned a couple of posts from here and were told that it was down to driving style!

We are getting about 510 - 530 per tank and have done ever since we got the car. Even doing a trip to Portsmouth and back (not caning it) we only saw 45mpg. What is everyone else getting per tank covering mixed journeys. Previously we were getting about 38-40mpg in our Golf GTi when my wife did a run and now she's lucky to get over 45 in the Roc. We have seen over 50mpg 3 times in the year we have had it!

Cheers

I've not put a tank in yet but at reasonable driving, left in auto,driven around town im not even getting to 40mpg.
I'm getting around 230 miles to £40 out of mine

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Higgy - Sorry to hear your query is being deflected by the dealer. I am not convinced that your stated 45mpg is representative of the car generally.

Can I just eliminate some unlikely areas:
a) Are you running tiny 14" rims not standard VW wheels and tyres?
b) Are you happy the tyre pressures are nice and low and that the tracking is completely out of line (so there's plenty of abnormal resistance)?
c) Are you carrying a huge load of steel or concrete in the boot to add weight to the car?
d) Do you have some kind of roof box on,the size of a semi-detached house?
e) Do you drive with both doors wide open and the tailgate up

(OK, I caught the Top Gear visit to Chernobyl last night...)

If "no" to all of these, I cannot imagine that there is something that you are doing different to the rest of us which gives these low mpg figures. Keeping it under 1,800 revs is bnkers too as you might end up labouring the engine and therefore using too much fuel. I do not always rely on the gear up/down indicator on the dashboard when i decide to change gear.

Even in this colder weather I am seeing nearly always 600 miles or more used / forecast from each tankful and average indicated mpg between fills in the region of 50-54 to the gallon.

Book a summer holiday to Cornwall and we'll meet up to discuss ! I can even recommend a better VW dealer down here to help you out, I'm sure.


Shaun1982 - how long have you had your DSG?

D

I've had it just over 3 weeks deagol

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Carting a full tank of fuel around will affect your figures too - I have never filled mine much over half way.

At 17,450 miles I got 55mpg on a 17 mile mixed trip this evening (50% in town, 50% dual carriageway). My average over the whole winter is 51.5. Cold weather seems to rob about 5mpg.

Ahh Deagol that might explain it! Plus did I mention I always tow a Fully loaded double axle caravan........

Now on the A12 doing between 70 - 80 and seeing 41.7 mpg. Av speed show 57. I got the same in my Vito van yesterday! Maybe I should use that to tow the ROC

Robinson's VW did suggest changing the fuel filter but as I had purchased the service package they want to charge me as its not due to be changed until the next service.

I don't go by the change indicator for gears and my wife uses auto mode.

I would be interested in chatting to someone so if anyone could pm me a number that would be good.

I tend to lug around a full tank of fuel and even then very rarely does my average consumption go below 50mpg

Hi, I've had mine 170 gt for almost 6 months and never had more than 46mpg...and around 450 to 475 per tank full, shame is that my previous car was a 2002 1.9 GT TDI (140bhp) Golf and I was able to get over 50mpg for the same trip without really trying, to get 46mpg out of the Scirocco I need to drive very very cautiously.

My car does have over 100k miles and is due for its cam belt, I have been reading about torsion setting on PD TDI engines (effectively timing) I was wondering if this could be the issue here.

So for example see this link: http://forums.tdiclub.com/showthread.php?t=315164" onclick="window.open(this.href);return false;

well this is certainly worrying, i get like 40mpg in a 140tdi, decent

I went to kent and back from
Oxford at 60mph (not tight but had loads of time and was getting paid for it) and got 74.6mpg. GT170 Revo stage 1 remap


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Maybe there are just massive variations in the engines as they seem to be around 40-45 or 50-55. I don't agree with the dealer that it could be driving style or the tyres making that much difference as my previous GTi was getting good mpgs.

Im getting the below on the MFD.

47-55 on a long motorway run.
36-40 on short blasts.

Did the trip again today. Various speeds from 70 - 110. Got just over 50mpg


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Motorway runs 50 - 55 MPG indicated,with full tank and well loaded up been consistent from start.