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JohnC

Some Real Word Economy

I have kept my trip computer data on the car without zeroing it for a while and despite the slow average speed am pleased to show that the big diesel is still doing well.

The low average speed doesn't feel as if it reflects the driving which has been a real mix of motorway, A roads and town driving. Stopping at  traffic lights and junctions really lowers the average speed though and I guess by the depths to which it has sunk I must have done more of this driving than I thought. I have certainly been in and out the city a reasonable number of times.


Big Blue

Not bad. I have a similar driving pattern and get half that.
Martin

That's pretty good.

My new commute is better for fuel consumption, so I see 40+ most of the time.  Lindsay has had the 535d all week, covering about 360 miles and I was surprised to see 46.2 since the last full up (Sunday) when I got into it this morning.  I've achieved 32mpg in the Boxster this week, which I'm equally impressed with as while a lot of it was spent at 70-80, there are a couple of sets of temporary lights with long queues and I like to use the full rev range whenever possible.
JohnC

Martin wrote:
That's pretty good.

My new commute is better for fuel consumption, so I see 40+ most of the time.  Lindsay has had the 535d all week, covering about 360 miles and I was surprised to see 46.2 since the last full up (Sunday) when I got into it this morning.  I've achieved 32mpg in the Boxster this week, which I'm equally impressed with as while a lot of it was spent at 70-80, there are a couple of sets of temporary lights with long queues and I like to use the full rev range whenever possible.


On longer A road and motorway trips mid 40's are pretty easy to achieve even when dispensing with slower traffic on a regular basis. I reckon this car is a good 5mpg better than my old one in similar driving.
Porsche's are remarkably economical given their performance.
Frank Bullitt

Have you checked the accuracy? The A1 I had the other week was telling me an overall figure of nearly 50mpg but the way the fuel gauge moved I suspect it ate porkie pies for dinner.

The DS4 seems to be averaging 43mpg which is the same as the old one and about right for us
Martin

I have, as you'd expect......

The 535d is very accurate, about 2% out, the Boxster is around 4% out.  Both under of course.

What's the impact of towing, or haven't you done enough yet?
Tim

I've been quite impressed by the 370 as it's averaging 27.9 (per the computer!) - not bad considering it gets regular 'exercise' plus if its used for the commute it's in slow moving traffic for about 15 minutes (which equates to about 35% of the whole commuting time).

The M5 is showing 23.5 which is mildly disappointing compared to the 25 of the old days but again it's in stop-start traffic as above.

I was surprised at the 'new' 320 - it was doing 41 or 42 but a longer run has seen it climbing to 48, however I don't think it's going to be as economical as my old one. Maybe that's a side-effect of the 200k miles.
Giant

The astra is claiming 76.8 mpg after 120 miles of the latest tankful.


Unfortunately, the Astra is something of a compulsive liar, over exaggerating mpg by 13.4% during its first 11k miles .
JohnC

Frank Bullitt wrote:
Have you checked the accuracy?


I can't say that I check it religiously but I have checked it a few times in the past on longer journeys and it is pretty close.
Frank Bullitt

Currently seeing a heady 29.7mpg out of the DS4 but it has been pulling The Shed for an hour and a half in crap traffic (I turn the stop start off when towing too).

I'm going to turn the trip computer off when battering through France at 110km/h, indications from my early slightly quicker forays suggest it'll drop to low 20's!
Clunes

I've not reset for ages but couldn't say how many miles - it's simply not something I pay any attention to...which is just as well given the OBC reads 17.2mpg average!
Martin

A couple of decent motorway journeys make quite a difference.


Andy C

What app is that ?
Martin

It's the Fuelly app.  I've been using the website for a couple of years, using the app is quicker.

You can get into the detail easier on their website, but the app is good enough for me.




Roadsterstu

I daren't look into mine too closely. I just daren't.
Big Blue

Yep. I use Fuelly as well and have done since I bought the Schreibmaschine. I've retired that car and the GSX-R. The website was/is Gas Tracker iirc. My tag on the left is from Fuelly.
Martin

Roadsterstu wrote:
I daren't look into mine too closely. I just daren't.


Might as well, it's not like you don't know when you fill up.

This is probably more in line with what you get and it's all vpower which was 122.9 yesterday.


Bob Sacamano

This is one of the geekiest things I've ever seen.  
Big Blue

Bob Sacamano wrote:
This is one of the geekiest things I've ever seen.  


Yep. I feel anxious if I haven't done it. The bike does best:




Racing Teatray

Ooooh!! Want!
PG

Racing Teatray wrote:
Ooooh!! Want!


In just downloaded it to try it.

First challenge for users on here - I've set it up as UK, Miles, Gallons, but then it only lets you buy fuel in gallons. How do buy fuel in litres but get miles per gallon on the app?

Edited -- OK scrub that. Have now looked at the web site and using litres plus UK view it gives litres bought and UK MPG.
Big Blue

Ha!

Now we've started a geekfest. How soon until we get a sticky thread just on Fuelly readouts?
Martin

Not long.  Then all the signatures will change....slippery slope to geekdom.
Tim

I've downloaded that now and set up all the cars.
I might regret it soon  
Big Blue

Ok. Who can beat mine for atrociousness?


Martin

I can't on mpg, but can easily beat you on fuel cost per month.
Michael

Downloaded. Tried to set up a new account and my email was already recognised, logged in to discovered I had set it up when I bough the D3 but never used it. Should be easier with an app.
Tim

Mrs Tim filled the M5 up yesterday and has failed to keep the necessary documentation  
Michael

Tim wrote:
Mrs Tim filled the M5 up yesterday and has failed to keep the necessary documentation  


But to take the man maths approach, your economy figures are going to embarrass a Prius.
Tim

Michael wrote:
Tim wrote:
Mrs Tim filled the M5 up yesterday and has failed to keep the necessary documentation  


But to take the man maths approach, your economy figures are going to embarrass a Prius.


Well, there is that - 300 miles of 'free' motoring  

That'll mean my first tankful will be around 46mpg.
Giant

Downloaded this earlier, and uploaded my own spreadsheet data to the webpage. Economy is pretty good, but it does annoy me that the OBC over exaggerates so much (average over life so far 65.4mpg).


JohnC

I am just back from a Glasgow to Harrogate to Leeds to Harrogate to York to Harrogate to Glasgow trip. I made it home with my fuel light coming on a few miles from the house.

On the trip down we stopped at Tebay where it read average speed exactly 70mph and mpg 46.3mpg. A bit of town/city traffic pulled both figures down a bit but still pretty respectable.


Tim

That's pretty impressive although the trip used to reckon I was getting something similar from my 530d.
Bob Sacamano

That's pretty good considering I'm only getting 49.7 from a 320d, albeit it's only got 500 miles on the clock and I would expect it to improve a bit as it runs in.
JohnC

I filled the car up and took my daughter swimming the night before we left, so that's about 10 miles and there would be about 4 litres left in the tank when the light came on. The tank is 57 litres, so maybe used 52 litres which equates pretty closely to the computer mpg figure.
Tim

Bob Sacamano wrote:
That's pretty good considering I'm only getting 49.7 from a 320d, albeit it's only got 500 miles on the clock and I would expect it to improve a bit as it runs in.


That's good, I'm getting 43 from a 320d although it's 210,000 on the clock so maybe that's the effect of wear and tear.
My older 5 speed 320 got 50 in the same circumstances.
gooner

I don't get much more from my 2ltr diesel with half the power and half the turbos!
PhilD

gooner wrote:
I don't get much more from my 2ltr diesel with half the power and half the turbos!


1.9, 2/5 of the power, half the turbos. And worse MPG...
Giant

1.6, 36% of the power, 135% mpg.

Does John have the best power/mpg compromise of everyone?
gooner

Depends how Bryan's doing with his Eco hybrid C class.

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