Obsessions: Fuel economy and tank range - Page 2

CFS75 · 24th November 2008, 18:01

The mpg figures for my 2.5 75 auto are very similar to those shown by Lightpainter - but not so well presented!

Over a five year period and 32000 miles my overall mpg is 24.58 which is slighly higher than Lightpainter's 23.95.

So many factors affect the mpg that one tankfull can produce exceptional highs and lows and a rolling mpg figure is the more accurate way to calculate it - as can be seen in Lightpainter's table.

My 75's computer always indicates between 4 and 5mpg better than actual figures and I keep intending to attempt to adjust it. If anyone has done this I would like to hear how it was done.

Colin S

The_Monk · 24th November 2008, 18:22

Usually about 300 on a tank of petrol, and 230ish on LPG. Turn the AC off and it goes up. I gave up monitoring the fuel consumption as no matter how much you work it out you are still going to do the same if you don't work it out!

Moonstone · 24th November 2008, 18:23

Who's been watching Top Gear, then?

750 miles plus in a Jag, with enough left for another 100?

pab · 24th November 2008, 18:53

drove hard at the weekend glasgow to lancaster,bit of slow town driving a few cold starts,returned 37.1 on the trip.
pab

JohnDotCom · 24th November 2008, 19:32

Quote:

Originally Posted by Moonstone

Who's been watching Top Gear, then?

750 miles plus in a Jag, with enough left for another 100?

Yes watched that on Sunday very Good,
Nearly 1,000 miles on a full Tank possible from the Jaguar.

He pushed it at beginning to try and use up the fuel
as he never thought he would make Blackpool,
Heating, Air Con the Lot and then realised he could beat the Eco cars.

calibrax · 24th November 2008, 22:16

Started out with a full tank when I collected the car for the first time (Friday 14th), and have done 490 miles since then... fuel light was on, so I filled up this morning. Managed to cram 55 litres into the tank, and the numbers work out at just over 40mpg. For my first week and a bit with the car (and the fact that it's an automatic), I'd say that's pretty damn good!

Frogwell · 26th November 2008, 14:03

Quote:

Originally Posted by lightpainter

This is what I get from my Auto:-

[IMG]

[/IMG]

I likes this! Have you put in the calculations so it works out the relevant fields when you enter in the litres used and miles travelled?

lightpainter · 26th November 2008, 15:21

Quote:

Originally Posted by Frogwell

I likes this! Have you put in the calculations so it works out the relevant fields when you enter in the litres used and miles travelled?

Yes all I enter is Date, Cost, Litres, Mileage, every thing else is automatic!

Frogwell · 26th November 2008, 16:25

I couldn't be cheeky and ask for a copy could I? I have a similar thing for my motorbike, but it's not as fancy, it's just works out the mpg.

Mac_rouser · 26th November 2008, 17:15

interesting thread as always .. fuel, i guess its down to road conditions and heavy flipflops, we usually get around 600 plus from a tank, in the black diesel it's done 140k. recently doing town work mixed with the odd long run we took a foto at three quarters of an almost full tank, first zeroing the mileage

24th November 2008, 22:16	#16
calibrax Posted a thing or two BMW 4 Series Join Date: Nov 2008 Location: Rochester, Kent Posts: 1,975 Thanks: 29 Thanked 37 Times in 28 Posts	Started out with a full tank when I collected the car for the first time (Friday 14th), and have done 490 miles since then... fuel light was on, so I filled up this morning. Managed to cram 55 litres into the tank, and the numbers work out at just over 40mpg. For my first week and a bit with the car (and the fact that it's an automatic), I'd say that's pretty damn good! __________________ Steve 2004 MG ZT+ CDTi 160 (sadly now gone!) 2015 BMW 435d GranCoupe XDrive

26th November 2008, 17:15	#20
Mac_rouser Loves to post Rover 75 Saloon and 75 Tourer Join Date: Apr 2008 Location: Leeds Posts: 285 Thanks: 145 Thanked 69 Times in 34 Posts	interesting thread as always .. fuel, i guess its down to road conditions and heavy flipflops, we usually get around 600 plus from a tank, in the black diesel it's done 140k. recently doing town work mixed with the odd long run we took a foto at three quarters of an almost full tank, first zeroing the mileage __________________ Take care mac Rover 75 a classic

24th November 2008, 18:01	#11
CFS75 Loves to post Rover 75 2.5 V6 Connoisseur SE Auto Join Date: Nov 2006 Location: Colchester Posts: 341 Thanks: 7 Thanked 3 Times in 3 Posts	The mpg figures for my 2.5 75 auto are very similar to those shown by Lightpainter - but not so well presented! Over a five year period and 32000 miles my overall mpg is 24.58 which is slighly higher than Lightpainter's 23.95. So many factors affect the mpg that one tankfull can produce exceptional highs and lows and a rolling mpg figure is the more accurate way to calculate it - as can be seen in Lightpainter's table. My 75's computer always indicates between 4 and 5mpg better than actual figures and I keep intending to attempt to adjust it. If anyone has done this I would like to hear how it was done. Colin S

24th November 2008, 18:22	#12
The_Monk I really should get out more....... - Join Date: Nov 2006 Location: - Posts: 2,586 Thanks: 0 Thanked 3 Times in 2 Posts	Usually about 300 on a tank of petrol, and 230ish on LPG. Turn the AC off and it goes up. I gave up monitoring the fuel consumption as no matter how much you work it out you are still going to do the same if you don't work it out!

24th November 2008, 18:23	#13
Moonstone Loves to post Rover 75 Tourer Join Date: Nov 2006 Location: Scotland Posts: 412 Thanks: 0 Thanked 1 Time in 1 Post	Who's been watching Top Gear, then? 750 miles plus in a Jag, with enough left for another 100?

24th November 2008, 18:53	#14
pab Banned MG ZT V6 190+ Join Date: Sep 2008 Location: Leeds Posts: 33,223 Thanks: 41 Thanked 1,614 Times in 1,416 Posts	drove hard at the weekend glasgow to lancaster,bit of slow town driving a few cold starts,returned 37.1 on the trip. pab

26th November 2008, 16:25	#19
Frogwell Regular poster '02 Rover 75 Tourer Diesel Join Date: Sep 2008 Location: Comrie Posts: 96 Thanks: 2 Thanked 8 Times in 2 Posts	I couldn't be cheeky and ask for a copy could I? I have a similar thing for my motorbike, but it's not as fancy, it's just works out the mpg.