fuel economy readings??????

newcastle brown · 4th June 2013, 21:59

I am sure I will get some abuse for this, so here goes

on a resent full tank fill up,
on the dash reading 5.0 I am using on average 6.2l of diesel per 100 km.
on dash reading 5.1 it will give me a range of 858km.

on the normal odometer reading I am showing I have done 78.9 miles

does this mean i'm getting upward of 45+ to the gallon

does this make sense

I am sure I will be put in my place by more knowledgeable people

hogweed · 6th June 2013, 13:00

The long (but hopefully correct) way of working it out is this:

1. Convert litres to gallons. 6.2 x 100 ÷ 568 ÷ 8 = 1.6344
2. Convert km to miles. 100km = 62.14 miles
3. 62.13 miles per 1.6344 gallons = 38mpg.

Mind you, I can’t count…

okenora · 6th June 2013, 15:35

Quote:

Originally Posted by hogweed

The long (but hopefully correct) way of working it out is this:

1. Convert litres to gallons. 6.2 x 100 ÷ 568 ÷ 8 = 1.6344
2. Convert km to miles. 100km = 62.14 miles
3. 62.13 miles per 1.6344 gallons = 38mpg.

Mind you, I can’t count…

lol you said it.........

6.2 litres is 1.366 gallons not 1.6344
and that then works out at about 45-46 mpg.....

NigelOBB · 6th June 2013, 15:40

Quote:

Originally Posted by okenora

lol you said it.........

6.2 litres is 1.366 gallons not 1.6344
and that then works out at about 45-46 mpg.....

Sure does 😃

ImageUploadedByTapatalk1370533224.200826.jpg

Westonboy · 6th June 2013, 16:49

I am reluctant to comment on these MPG threads as so many claims get ridiculed. I have recently been on a holiday to Scotland and my cdt, brim to brim covered 630 miles and consumed 54 litres of fuel, I think that gives approx 54 mpg, My car is maintained by Jules at Colwyn Bay and has been an absolute delight during the 18 months that I have owned it.

hogweed · 6th June 2013, 18:26

Quote:

Originally Posted by okenora

lol you said it.........

6.2 litres is 1.366 gallons not 1.6344
and that then works out at about 45-46 mpg.....

Actually that wasn't counting for once - it was bad typing! I typed 1.3644 as 1.6344.

clumphillian · 12th June 2013, 23:04

Glad you've broken the ice. I'm obsessed with mpg rather than mph, always have been. 10 miles per litre is the minimum I expect and has been for 20 years.
Latest mixed driving brim to brim came out at 49.5 mpg. (diesel Tourer)

marinabrian · 12th June 2013, 23:19

Quote:

Originally Posted by hogweed

The long (but hopefully correct) way of working it out is this:

1. Convert litres to gallons. 6.2 x 100 ÷ 568 ÷ 8 = 1.6344
2. Convert km to miles. 100km = 62.14 miles
3. 62.13 miles per 1.6344 gallons = 38mpg.

Mind you, I can’t count…

Multiply litres by .22 will give gallons

Bit easier

Brian

hogweed · 13th June 2013, 07:41

Quote:

Originally Posted by marinabrian

Multiply litres by .22 will give gallons

Bit easier

Brian

0.2200704225352112676056338028169 actually

GeoffWW · 13th June 2013, 12:05

Hello Hogweed,

Are you sure you need all those numbers behind the decimal point????

HM Customs and Excise use 1 Imperial Gallon equals 4.54609litres. So much easier.

4th June 2013, 21:59	#1
newcastle brown Regular poster rover 75 cdt Join Date: Mar 2011 Location: LEWES Posts: 67 Thanks: 0 Thanked 2 Times in 2 Posts	fuel economy readings?????? I am sure I will get some abuse for this, so here goes on a resent full tank fill up, on the dash reading 5.0 I am using on average 6.2l of diesel per 100 km. on dash reading 5.1 it will give me a range of 858km. on the normal odometer reading I am showing I have done 78.9 miles does this mean i'm getting upward of 45+ to the gallon does this make sense I am sure I will be put in my place by more knowledgeable people

6th June 2013, 13:00	#2
hogweed I really should get out more....... Vauxhall Insignia CDTi; MG TF 135 Join Date: Jan 2010 Location: Norn Iron Posts: 2,969 Thanks: 942 Thanked 378 Times in 297 Posts	The long (but hopefully correct) way of working it out is this: 1. Convert litres to gallons. 6.2 x 100 ÷ 568 ÷ 8 = 1.6344 2. Convert km to miles. 100km = 62.14 miles 3. 62.13 miles per 1.6344 gallons = 38mpg. Mind you, I can’t count… __________________ Past cars: MGB GT; Escort 1300 Sport; Vauxhall VX4/90; Marina Coupe TC; Celica ST (1972); Montego Turbo; Astra GTE 16V; Astra GSI 16V; Golf GTI 16V (Mk II); Sierra XR4x4 Estate; BMW 325i (E30); BMW M3 3.0; BMW M3 3.2 Evo. Left some of the more embarrassing ones out. And about 30 motorbikes.

6th June 2013, 16:49	#5
Westonboy Posted a thing or two Honda Jazz Join Date: Jan 2012 Location: Llangollen Posts: 1,025 Thanks: 301 Thanked 344 Times in 158 Posts	I am reluctant to comment on these MPG threads as so many claims get ridiculed. I have recently been on a holiday to Scotland and my cdt, brim to brim covered 630 miles and consumed 54 litres of fuel, I think that gives approx 54 mpg, My car is maintained by Jules at Colwyn Bay and has been an absolute delight during the 18 months that I have owned it.

12th June 2013, 23:04	#7
clumphillian Regular poster Rover 75 tourer Join Date: Jan 2013 Location: Market Rasen Posts: 40 Thanks: 7 Thanked 0 Times in 0 Posts	Glad you've broken the ice. I'm obsessed with mpg rather than mph, always have been. 10 miles per litre is the minimum I expect and has been for 20 years. Latest mixed driving brim to brim came out at 49.5 mpg. (diesel Tourer)

13th June 2013, 12:05	#10
GeoffWW Loves to post Rover 75 CDTi Tourer Connoisseur SE Auto, Also fully restored Mk 2 1966 MG Midget Join Date: Apr 2007 Location: Manchester Posts: 314 Thanks: 49 Thanked 59 Times in 46 Posts	Hello Hogweed, Are you sure you need all those numbers behind the decimal point???? HM Customs and Excise use 1 Imperial Gallon equals 4.54609litres. So much easier.