a really dumb mpg question

[glynnbob]

don't really know how to work this out so bear with me if I use £1000 of diesel getting roughly 1800miles @32mpg over a month and change this vehicle to a car doing same 1800 miles @52mpg how much better off a month would I be??? sure theres a simple way of working this out but im damned if I know how!!!

[bearman68]

About £150.

1800 miles divided by 32 = 56.25 gallons
1800 miles divided by 52 = 34.5 gallons

Difference = 21.5 gallons @ £7 a gallon = £150

All approx

[HustleRussell]

I make it a saving of about £385

[Phateuk]

If its costing you £1000 to do 1800 you're getting about 13mpg at £7/gallon. Have you got a hole in your tank?

[Slow]

bearman68 said:

About £150.

1800 miles divided by 32 = 56.25 gallons
1800 miles divided by 52 = 34.5 gallons

Difference = 21.5 gallons @ £7 a gallon = £150

All approx

56.25 gallons x £7 = £393.

Where is this £1000 for 1800 miles coming from?

[infradig]

How much are you paying for diesel? Based on 32mpg 1800 miles should be £350/400. How are you spending a grand?

Maths isn't my strongpoint and maybe I misunderstood the question.

Eta obviously took longer to write my post than previous 2!

Edited by infradig on Wednesday 21st August 21:18

[glynnbob]

I must be getting it wrong car is a merc vito 13 plate as im a taxi driver but im sure im only getting 30-34 mpg id say out of a £95 fill up im lucky to get 450-500 miles out of a tank. looking to swap for a mondeo 2.0 diesel.

[lufbramatt]

If £95 gets you 450 miles then £1000 should last you 4700+ miles! Not 1800.

[glynnbob]

that's more like it lufbramatt sorry so its £95 for 450-500 miles!!! say im doing 40,000 a year how much would I be saving?? sorry to sound really dumb hope this explains it better?

[LooneyTunes]

glynnbob said:

don't really know how to work this out so bear with me if I use £1000 of diesel getting roughly 1800miles @32mpg over a month and change this vehicle to a car doing same 1800 miles @52mpg how much better off a month would I be??? sure theres a simple way of working this out but im damned if I know how!!!

All things being equal (i.e. price of fuel remains the same), your new fuel cost = £1000 x (32/52)

Put another way, you save 38.5%.

Edit: if your £95 does 500 miles, 40,000 miles costs you 80 x 95 = £7600. 38.5% of this (your saving) = £2926

[Dracoro]

1800 miles divided by 32 = 56.25 gallons * 4.54 = 255 litres * £1.36 = £347
1800 miles divided by 52 = 34.5 gallons * 4.54 = 157 litres * £1.41 = £221

So £126 extra to run the petrol over 1800 miles
So £126 * 22 (40k miles) = £2,772 extra per year.

Add up the extra/potential diesel running/servicing/depreciation costs to see if it's worth it.

[glynnbob]

thanks looney tunes that's what I was trying to ask.

[glynnbob]

tbh the vito im renting and its costing me a fortune £200 p/w so if I can get my own car for say half that im quids in on rental straight away and also speculating my insurance at £2500 rough estimate as ive been told first taxi insurance is pricey. hoping any saving on fuel p/w will cover the insurance surely its a no brainer?? what do you guys think??

cheers for replies glynnbob.

[glynnbob]

anyone with any advice on this situation?? hoping to go and px my own car against mondeo in the next few days.

[HustleRussell]

What age Mondeo? Which engine? How many miles?
They can be troublesome at higher mileages.

[DaveH23]

You mention your looking to save on fuel costs and that your a taxi driver but dont forget to calculate maintenance and depreciation, which combined could heavily outway your fuel savings.

[glynnbob]

its a 1 year old mondeo 2.0ltr diesel titanium 14,000 miles @14,500 my p/ex has offered me 8,000 im only looking to keep this car for 2-3 years possibly 4 years and will be doing 35-40000 a year im currently paying £200 p/w for rental of taxi and putting £250 in diesel each week so I know deprecation mondeo will be worth bugger all after 4 years but surely what im paying out I should be quids in??? hoping fuel savings will cover my first years insurance and my uncle will do servicing tyres etc.