Man maths to justify a V8.
Discussion
Hi All,
Apologies in advance as this may be a long, drawn out, wittering post.
I am currently musing over the possiblilty of changing my E39 530d (193bhp) Auto, Saloon, for something similar but V8 petrol and more power. Now bear with me on this as I am trying to get the man maths correct to justify this. I am not even thinking of relating the cost to change into my calculations, as that is another thing altogether. The calculations that I am doing are purely about the day to day fuelling.
I average around 190 miles a week and put in around £45 diesel per week. The computer on the BMW shows an average of 27mpg and an average speed of 26mph(this might give an idea of the type of weekly comute) This seems to work out correctly if I say that diesel is currently about £6.50 per gallon. So 190miles/27mpg is 7.03 gallons then multiply by £6.50 to get £45.75. All makes sense so far, I think.
Now with the official combined figure for the BMW being 34mpg and me getting 27mpg, my first real question arises.
If I take it that, as my current driving works out to around 7mpg less than the official figures can I then apply the -7mpg to the official figures of another similarly sized, auto gearbox car but with a more powerful petrol V8?
So with the same calculation for a petrol car where petrol is currently costing £6.10 per gallon. 190 miles for £45, or 7.4 gallons, means that I would want to look at a V8 with an official combined figure of 32mpg, therefore 25mpg in my world (or tiny narrow minded brain), to achieve the same day to day fuel cost? Right? Maybe?
Does such a thing exist (around 10 years old, around 80k mileage)?
Is there anyone out there that can help my man maths work?
I know that the above is pretty much pie in the sky. The reality is that the location of the company that I work for, is moving potentially much closer to home so making me think that running a much less fuel efficient car for a similar or less weekly fuel cost, is not too unachievable.
By the way, I really really want some sort of Jaguar.
Apologies in advance as this may be a long, drawn out, wittering post.
I am currently musing over the possiblilty of changing my E39 530d (193bhp) Auto, Saloon, for something similar but V8 petrol and more power. Now bear with me on this as I am trying to get the man maths correct to justify this. I am not even thinking of relating the cost to change into my calculations, as that is another thing altogether. The calculations that I am doing are purely about the day to day fuelling.
I average around 190 miles a week and put in around £45 diesel per week. The computer on the BMW shows an average of 27mpg and an average speed of 26mph(this might give an idea of the type of weekly comute) This seems to work out correctly if I say that diesel is currently about £6.50 per gallon. So 190miles/27mpg is 7.03 gallons then multiply by £6.50 to get £45.75. All makes sense so far, I think.
Now with the official combined figure for the BMW being 34mpg and me getting 27mpg, my first real question arises.
If I take it that, as my current driving works out to around 7mpg less than the official figures can I then apply the -7mpg to the official figures of another similarly sized, auto gearbox car but with a more powerful petrol V8?
So with the same calculation for a petrol car where petrol is currently costing £6.10 per gallon. 190 miles for £45, or 7.4 gallons, means that I would want to look at a V8 with an official combined figure of 32mpg, therefore 25mpg in my world (or tiny narrow minded brain), to achieve the same day to day fuel cost? Right? Maybe?
Does such a thing exist (around 10 years old, around 80k mileage)?
Is there anyone out there that can help my man maths work?
I know that the above is pretty much pie in the sky. The reality is that the location of the company that I work for, is moving potentially much closer to home so making me think that running a much less fuel efficient car for a similar or less weekly fuel cost, is not too unachievable.
By the way, I really really want some sort of Jaguar.
My old 3.2 XJ averaged 22mpg on my commute to work,this consisted of about 5 miles of A-Road and 5 through the middle of Preston so your 25 may well be achievable,mine was a 98 too so if you can pick up the later,lighter XJ it sounds very do'able!
PS- The replacement 740i 4.4 does it at 16.8 but it sounds much better!
PS- The replacement 740i 4.4 does it at 16.8 but it sounds much better!
So far, my mind has been read. But XJR or S Type R? (I don't have a problem with the way the S Type looks BTW)
Also, it would need to be the 4.2 engine as I wouldn't trust myself to take the correct precautions with the 4.0 (I think that there are some horror stories of that engine) This means that the XJR would need to be of the X350 flavour I suppose.
Also, it would need to be the 4.2 engine as I wouldn't trust myself to take the correct precautions with the 4.0 (I think that there are some horror stories of that engine) This means that the XJR would need to be of the X350 flavour I suppose.
I stopped reading at "V8"
The way I look at it, worrying about fuel economy is going to be a thing of the past when either the petrol runs out or we are forced to drive electric cars - may as well enjoy dumping the fuel through a big thirsty engine while you can! (at least that's how I try to justify 26 mpg
)
The way I look at it, worrying about fuel economy is going to be a thing of the past when either the petrol runs out or we are forced to drive electric cars - may as well enjoy dumping the fuel through a big thirsty engine while you can! (at least that's how I try to justify 26 mpg
)You can never have too many V8s. That, in Latin, is on my family crest.
You don't need man maths. You just need a V8. That's NEED.
Now, go and buy, and let us know what you got.
(And just in case the SWMBO question rears it's head, there is no discussion needed there. "It has an engine. And doors. And wheels" is all she needs to know. And in most cases, she wouldn't know an 8 from a 6/5/4/3/2 anyway. Or from a 12 for that matter
)
You don't need man maths. You just need a V8. That's NEED.
Now, go and buy, and let us know what you got.
(And just in case the SWMBO question rears it's head, there is no discussion needed there. "It has an engine. And doors. And wheels" is all she needs to know. And in most cases, she wouldn't know an 8 from a 6/5/4/3/2 anyway. Or from a 12 for that matter
) Parsnip said:
I stopped reading at "V8"
The way I look at it, worrying about fuel economy is going to be a thing of the past when either the petrol runs out or we are forced to drive electric cars - may as well enjoy dumping the fuel through a big thirsty engine while you can! (at least that's how I try to justify 26 mpg)
...and the point is to be truly ecologically friendly someone has to wring the last miles out of all the gas-guzzlers that have ever been built to get the benefit out of the effort in manufacturing them The way I look at it, worrying about fuel economy is going to be a thing of the past when either the petrol runs out or we are forced to drive electric cars - may as well enjoy dumping the fuel through a big thirsty engine while you can! (at least that's how I try to justify 26 mpg
)
Phil74 said:
Hi All,
Is there anyone out there that can help my man maths work?
As a professor in Man Maths i have read your hypothesis with careful consideration.Is there anyone out there that can help my man maths work?
I am pleased to confirm that your calculations are correct and a petrol V8 is very much affordable.
Jaguar have made no V8 vehicles in the past 15 years that can not achieve 190 miles from £45 of fuel.
Happy shopping
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