MK7 GTD - Real Life MPG

[corgi]

>54 mpg (based on the trip computer)  on this morning's trip from Stratford-upon-Avon to Farnborough... via M40/A34/M4 etc.. variable traffic.

Last tank (actuals) 362 miles (7924 miles), 36.56 litres, 45.0 mpg mix of driving m'way/country roads/town

Best tank (actuals) 342 miles, 30.54 litres, 50.91 mpg mix of driving more m'way some country roads and town.

Overall (actuals) 7707miles, 799.52 litres, 46.08 mpg mix of driving

[CR4ZYHOR5E]

47.8mpg driving "normally" (70-75mph) to work this morning, 61.7mpg driving like a nun (ACC set at 60mph) returning home this afternoon.

2-3 miles of 30-40mph local roads and through town, 22 miles of dual carriageway and motorway.

45-48mpg is typical, getting the higher numbers to show on the computer is possible but involves driving in an unrealistic manner (felt like I was on the Top Gear episode where they had to drive from Switzerland to Blackpool on a single tank of juice).

[monkeyhanger]

Crazyhorse: Are those indicated mpgs or brim determination actuals? You'll find the MK7's MFD to be pretty accurate (around 3% optimistic), compared to previous generations and most other cars i've been in that haven't had a new model in the last year or so (8-10% optimistic).

For your 25 mile commute, those figures are pretty poor. I don't spare the horses and regularly hit 45mpg actual (50mpg indicated) on my 12 mile commute to work with a dual channel tuning box (which bumps up the MFD discrepancy to 9%), with 2/3 of that maintaining 80mph on dual carriageway.

I find it very hard to do less than 43mpg no matter how hard I drive the car. On a longer journey (40 miles) with the same driving style, I can get a 50mpg actual (55mpg indicated) in the current weather with 8-15C ambient temp.

I've gotten over the initial mpg disappointment and am happy with a 45mpg commute and 243ps on tap with the box.

[CR4ZYHOR5E]

Thanks. Those are indicated numbers as shown on the mfd.

Yeah my indicated numbers are typically 45-48. Starting to think I have a hole in my fuel tank based on your numbers. Is fine, just thought it would be better that's all.

[Dave the Cat]

This afternoon on the way back down the M1 from Leeds I nearly hit 64mpg  there is a lot of 50mph road works and it was busy, most of the way at a leisurely 65-70mph cruise and have done 2700 miles since 14th April and getting better every tank...

[Dave the Cat]

In case anyone is as interested as i am!? Here is a screen shot, literally, of my fuel log to track performance,  starting to build a picture through loosening up that tight engine

[Skinnee D]

That's a neat record Dave.  Wish I could get diesel for 123.9p   I know that perpetual 50 stretch of the M1 only too well - frustrating, but great for us fuel misers

[monkeyhanger]

Demonstrated pretty well today that temp has a huge effect on mpg. Picked the missus up from work, went to the Metrocentre, then her mams and then home, 37 mile round trip, was caning the car up 2 long sliproads (one onto the A1, one onto the A19), each pretty steep and about 3/4 of a mile long each and maintaining 80-85 on the dual carriageway sections, with the aircon on all the way. Result was an indicated 55mpg for the trip on what has been the hottest day of the year so far (21C). A few weeks ago, doing the same on a miserable 12C day with no aircon would have just brushed 50mpg. That's not down to running in. Up to about 7700 miles.

[Dave the Cat]

That's a neat record Dave.  Wish I could get diesel for 123.9p   I know that perpetual 50 stretch of the M1 only too well - frustrating, but great for us fuel misers

Thanks, yes probably the only up side of average speed zones...the £123.9 per litre was due to the Tesco clubcard kickback they had going a few weeks ago, I get all my fuel from Tesco as saving up the points for another trip to Lego land, and may even take the kids!!!

[JamesMac]

Yeah - I agree regarding cruise but I regularly do a stretch of road that I can sit at 70mph on and not have to slow down for much. Hopefully the adaptive part of the cruise can be turned off and just used at constant speed.

If I can get 50mpg on the motorway out the GTD I'd be satisfied, 60mpg I'd be over the moon - anything less than that I'll be pretty annoyed..

Will be interesting to see.

I got 50mpg on a GTD DSG (extended test drive of demo) doing a 62 mile round trip with about 12 miles around the doors and 50 miles of it sitting at 80mph on dual carriageway. The car had less than 900 miles on the clock (so some running in gains yet to be realised) and the DSG will hit you for 10% on your mpg vs manual so expect at least 55mpg with the manual. I had ADC switched off and no aircon on that trip, ambient temp about 20C. About 8 times on the trip cars overtaking lorries slowed progress down to 60mph, but as soon as they were out of the way I buried the accelerator until I hit 80mph again and stayed there. I think it will meet your expectations. I didn't have cruise on - not sure how much fuel penalty you will incur for that - maybe a fair bit if you try to drive closer to the car in front than ADC would like and it is braking for you regularly.

I keep an eye on the 'instant' MPG display when the ACC is slowing me down and it actually jumps (increasing MPG) considerably I've found. Could be that regeneration is factored into the parameters to cause this?!