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Author Which is really cheaper? Petrol v Diesel
Steve X16XE
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6th May 08 at 00:26   View User's Profile U2U Member Reply With Quote

I been thinking about this for a while now due to the cost at the pumps.

I have used a Ford Mondeo 04 estate for this.

Price at the pumps, Diesel 117.9 V Petrol 107.9

Range based on 50L of fuel, Diesel 45mpg, 495 miles V Petrol 35mpg, 385 miles

TAX over 3 years (that's all it shows on Parkers), Diesel £500 V Petrol £740

To do an average of 15,000 miles a year, it'll cost, Diesel £5364.45 V Petrol £6312.15

To buy the same car apart from the engine, the Diesel is £1000 more expensive.

Now here is the fun bit........ The totals.

Over 3 years, Diesel £17,593.35 (a year £5864.45) V Petrol £19,676.45 (a year £6558.82)

So the Derv power plant has a saving of £2083.10 over 3 years, thats £694.37 a year saving.

I had fun working that out. I hope you had fun reading it all.

lil_g
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6th May 08 at 00:48   View User's Profile U2U Member Reply With Quote

I had a think about this too the other day!

But then couldn't see me trading in the XE for a TD, I just pinch the missus
Jay
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6th May 08 at 01:10   View User's Profile U2U Member Reply With Quote

Tax for my 2.0TDCi Mondeo was only £62 for 6 months so maybe the tax is wrong?
pow
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Registered: 11th Sep 06
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6th May 08 at 07:36   View Garage View User's Profile U2U Member Reply With Quote

Derv derv derv derv
Superlite Ltd.
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6th May 08 at 08:09   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by pow
Derv derv derv derv


pow
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6th May 08 at 08:14   View Garage View User's Profile U2U Member Reply With Quote

I averaged 62.7MPG doing between 70-85 on the way to brighton on the motorway this weekend
A.Nam
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6th May 08 at 08:37   View User's Profile U2U Member Reply With Quote

my ibiza fr is cheaper to tax and to run than my 1.2 corsa c, and a hell of a lot quicker. drev's for winners!
RichR
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6th May 08 at 09:06   View Garage View User's Profile U2U Member Reply With Quote

I think your figures are wrong..........
------------------------------------------------------------------------------------------------
I have used a Ford Mondeo 04 estate for this.

Price at Pumps:
Diesel 117.9p
Petrol 107.9p

Fuel Consumption: [1 UK Gallon = 4.546litres]
Diesel 45mpg, [9.91m/litre]
Petrol 35mpg [7.71m/litre]

To do an average of 15,000 miles a year, it'll cost,
a]Diesel [(15000/9.91)*1.179]£1784.56
x]Petrol [(15000/7.71)*1.079]£2099.22


TAX over 3 years (that's all it shows on Parkers),
b]Diesel £500
y]Petrol £740


c]To buy the same car apart from the engine, the Diesel is £1000 more expensive.


Over 3 years:
Diesel £6853.68(a year £2284.56) [=(3*a)+ b +c]
Petrol £7037.66(a year £2345.89) [=(3*x)+y]

So the Derv power plant has a saving of £183.98 over 3 years, thats £61.33 a year saving.



[Edited on 06-05-2008 by LiVe LeE]
RichR
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6th May 08 at 09:08   View Garage View User's Profile U2U Member Reply With Quote

but in all honesty; I wouldn't incl. the extra £1000 outlay for the diesel as its not truly a running cost and you're likely to get some of it back residually upon selling it.
Whittie
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6th May 08 at 09:08   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by pow
I averaged 62.7MPG doing between 70-85 on the way to brighton on the motorway this weekend


But you were complaining how you could only do 250miles to £80 last week? lol
pow
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6th May 08 at 09:12   View Garage View User's Profile U2U Member Reply With Quote

I fixed it on friday

My days you should have seen the state of the fuel filter, that had been on it from new

[Edited on 06-05-2008 by pow]
Steve X16XE
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6th May 08 at 10:29   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by LiVe LeE
Over 3 years:
Diesel £6853.68(a year £2284.56) [=(3*a)+ b +c]
Petrol £7037.66(a year £2345.89) [=(3*x)+y]

So the Derv power plant has a saving of £183.98 over 3 years, thats £61.33 a year saving.



quote:
Originally posted by Steve X16XE
Over 3 years, Diesel £17,593.35 (a year £5864.45) V Petrol £19,676.45 (a year £6558.82)



Derv for 3 years is £17,593.35 (an extra £1000 is added due to the extra cost of buying it).

Petrol for 3 years is £19,676.45.

Thats a difference of £2083.10 over 3 years.

So over a year a saving is £694.37.
Steve X16XE
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6th May 08 at 10:33   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by LiVe LeE
but in all honesty; I wouldn't incl. the extra £1000 outlay for the diesel as its not truly a running cost and you're likely to get some of it back residually upon selling it.


Just seen this bit. I know what you mean there. I also haven't taken into account the rise of fuel over the next 3 years either. It was just a quick calculation.
RichR
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6th May 08 at 11:04   View Garage View User's Profile U2U Member Reply With Quote

you've trebbled the diesel twice
RichR
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6th May 08 at 11:12   View Garage View User's Profile U2U Member Reply With Quote

quote:

To do an average of 15,000 miles a year, it'll cost, Diesel £5364.45 V Petrol £6312.15 this is trebled

To buy the same car apart from the engine, the Diesel is £1000 more expensive.

Now here is the fun bit........ The totals.

Over 3 years, Diesel £17,593.35 (a year £5864.45) V Petrol £19,676.45 (a year £6558.82) this is trebled again




think about the figures your stating. I drive 15,000miles a year; it doesn't cost anywhere near £6500 a year to run my car.

Just to show again with petrol

35mpg = 7.71 miles per litre [ 1 uk gallon = 4.546 litres]

therefore 15000/7.71 = 1945.52 litres of fuel

1945.52litres @ £1.079 per litre = £2081.71 per year

If you mulitply £2081.71 by 3 years, you get £6245.13

If you add on the £740 tax [for 3 years] you get £6985.13

if you divide this by 3 to give a yearly running figure you get £2328.38 per year.

which is in no way £6588.82 as you quoted!

and the difference between the two is less than £200

[Edited on 06-05-2008 by LiVe LeE]
Steve X16XE
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6th May 08 at 11:36   View User's Profile U2U Member Reply With Quote

Yep. Your right. I worked it out for 45k (3 years) then X3. Thats how i got that number.

So really, there is very little in it to buy a derv over the petrol.

Cheers for that
RichR
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6th May 08 at 11:42   View Garage View User's Profile U2U Member Reply With Quote

nowadays there very little reason other than tax or if your doing very high mileage

Diesel used to be 10-15p cheaper than Petrol and is now the other way. Apparently this is because they're struggling to refine enough to meet demand as the number of diesel cars has rocketed.

Although sounds more like profit making to me.
Robbo
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6th May 08 at 11:47   View User's Profile U2U Member Reply With Quote

I did a similar exercise when I was looking at whether to go for a diesel Anni or petrol Anni and I planned on only having it 2 years... the higher price to buy a diesel (£500 min) and higher pump prices negated the savings... esp when you consider that by gettign higher mpg I would have driven faster and been likely to get a similar mpg to what I get now... I simply stick to speed limits and avoid excessive acceleration when driving to and from work... makes no odds tbh as i struggle to get above the speed limits anyway due to traffic

Then at weekends I have fun
Robbo
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6th May 08 at 11:48   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by LiVe LeE
nowadays there very little reason other than tax or if your doing very high mileage

Diesel used to be 10-15p cheaper than Petrol and is now the other way. Apparently this is because they're struggling to refine enough to meet demand as the number of diesel cars has rocketed.

Although sounds more like profit making to me.
Are you sure?? I alwats remember diuesle being way more expensive than petrol
Steve X16XE
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6th May 08 at 11:52   View User's Profile U2U Member Reply With Quote

It was a fair moons ago but yeah it used to be.

Did you know that when making petrol from crude oil, diesel is one of the products that follows.

So it just proves that they are upin' the price for one reason "coz they can"

 
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