Jrw, so you say the article is "rubbish" before you have even read it?

In the article they have calculated and included tax also the depreciation figures, they have used the combined figure for the mpg

Start by adding the cost of the depreciation for the diesel car to the cost of the road tax forvthe 2nd and 3rd years. From this you then need to subtract the cost of the depreciation and tax for the petrol model. This should give you figure A.

Now take the cost of a litre of diesel multiply it by 4.546 to get the cost per gallon and divide the result by the combined economy of the diesel.

Subtract this figure from the same calculation for the petrol model this will be figure B.

Now to arrive at the break even mileage figure is to divide figure A by figure B

Of course the answer assumes that you keep the car for 3 years 36,000 miles for standardisation and uses the combined mpg figure.

But as we know some diesel owners 'exaggerate' their mpg anyway and can beat the manufacturers figures ;0

Assuming we're talking about fuel costs you're way off there, it should be around 20p per mile for petrol and 15p a mile for diesel.

Its been a long day i was doing litres against gallons and not gallons against gallons.

Jrw, so you say the article is "rubbish" before you have even read it?

In the article they have calculated and included tax also the depreciation figures, they have used the combined figure for the mpg

Start by adding the cost of the depreciation for the diesel car to the cost of the road tax forvthe 2nd and 3rd years. From this you then need to subtract the cost of the depreciation and tax for the petrol model. This should give you figure A.

Now take the cost of a litre of diesel multiply it by 4.546 to get the cost per gallon and divide the result by the combined economy of the diesel.

Subtract this figure from the same calculation for the petrol model this will be figure B.

Now to arrive at the break even mileage figure is to divide figure A by figure B

Of course the answer assumes that you keep the car for 3 years 36,000 miles for standardisation and uses the combined mpg figure.

But as we know some diesel owners 'exaggerate' their mpg anyway and can beat the manufacturers figures ;0

I don't need to read it as always with these petrol vs diesel:

• They never do real world figures
  
• They never take into account the resale value (ie it may cost £1k more to buy but it is easier to sell and more than likely that '£1k' will be recouped at sale - providing your car is less than x amount of years old in comparison to the petrol)
  
• Longer service intervals on the diesel
  
• Historically (although i am not sure if this is still the case) cheaper insurance on the diesel
  

The excel spreadsheet is more accurate as you can put your own figures in from the real world (ie fuelly etc) and then add the tax, depreciation and also your insurance costs.

I don't exaggerate my figures at all unlike some 1.8tsi owners! At least i can provide proof (I have been touching nearly 60mpg this week on the motorway!). It is short journies that kill my consumption over a tank but i dread to think what i would get in a petrol.

At the end of the day i would say that the 12k figure is still a valid diesel/petrol break point. It is more about the day to day running than the initial outlay as you are going to recoup some or all of that back if you were to sell after 3-5 years.

Also worth bearing in mind that many diesel owners on here have said they get no where near the quoted figures, so it isn't just a petrol thing! Horses for courses though, pay your money and take your choice. No point arguing about it.

I am car enthusiast, I love driving and petrol engines give me a much better driving experience. That's just me though.

hey,i have a tdi vrs its usually displaying im geting in round 55kph...duno what thats works out to in the real world, but i generally get over 1000km per tank, iv got 1200km on a tank when i drove like miss daisy for the week. but drive`n normally i get over the 1000km every week per fill. keeps me happy and a good portion of the petrolheads behind me

That is rubbish. Are they going off real world figures? VAG seem to 'sex' up the petrol figures as this makes them the most money as they are cheaper to produce.

Can't see how the 1.4TSI turbocharged injection petrol engine is going to be much cheaper to produce than a diesel?

Can't see how the 1.4TSI turbocharged injection petrol engine is going to be much cheaper to produce than a diesel?

No dpf for a start

I don't need to read it as always with these petrol vs diesel

You don't need to read it because you know better, no wonder you get on with lol.......your too similar in my opinion.

They never do real world figures

They never take into account the resale value (ie it may cost £1k more to buy but it is easier to sell and more than likely that '£1k' will be recouped at sale - providing your car is less than x amount of years old in comparison to the petrol)

They never do 'real world figures', well how could they when some super drivers claim above manufacturer figures and some truthful get below? So they use a 'standard' figure which shows a 'standard' cost comparison. Cry all you like but using 'standard' figures gives a consistent answer.

As for the resale they have taken the depreciation into account and the difference is as you say about 1k, so you are getting it back in the figures. We could go into the extra finance cost etc on the initial cost price but that's another day.

Yes there are variables on an individual basis, however for some it is a false diesel economy.

You don't need to read it because you know better, no wonder you get on with lol.......your too similar in my opinion.

They never do 'real world figures', well how could they when some super drivers claim above manufacturer figures and some truthful get below? So they use a 'standard' figure which shows a 'standard' cost comparison. Cry all you like but using 'standard' figures gives a consistent answer.

As for the resale they have taken the depreciation into account and the difference is as you say about 1k, so you are getting it back in the figures. We could go into the extra finance cost etc on the initial cost price but that's another day.

Yes there are variables on an individual basis, however for some it is a false diesel economy.

Exactly - they go off manufacturer so pointless imo as i would like to see you get 44MPG out of a 1.4TSI in an Octavia.

Real World is easy to do. They could do it in house as they get long termers all the time off the various manufacturers. Even if they couldn't - there is a wealth of accurate information on the likes of Spirit monitor and Fuelly....Would people really lie and make up figures on this?!

I didn't say depreciation - i said resale value - Depreciation as a percentage does not really work when you are comparing 2 cars with a different price - it is only good for a comparison on 2 cars costing say £14k and one looses 40% and the other 50% - It is then an easy comparison to make. The point i was making is that if the diesel was £1k more you are more than likely to see that back when you come to sell. So if you are getting it back at resale, you are saving money straight off.

I never said that diesel is good for everyone, hence why i said 12k per year is still a good break point to go off (obviously depending on the type of journey you do).

Finally, please don't compare me to lol - i like to write about factual information on here and i like to be able to prove my findings and information i give.

I didn't say depreciation - i said resale value - Depreciation as a percentage does not really work when you are comparing 2 cars with a different price - it is only good for a comparison on 2 cars costing say £14k and one looses 40% and the other 50% - It is then an easy comparison to make.

I'm sorry but I don't see your point, the value figure for depreciation is what BOTH cars trade value is after 3 years and 36000 miles. So the initial price makes no difference, you pay more initially for the diesel but you do get that back. Depreciation as a factor is driven by how desirable the car is and as such a car with lower depreciation keeps more of its value therefore resale value ! You cannot use retail prices, a private dealer is not going to charge the same as a dealer and a private sale is different again, even dealerships in the same chain have different retail prices.

I simply cannot see how you can argue against values put on cars by CAP/GLASS's etc and try to ignore how they work out that figure, depreciation is the primary driver of that cars value, not what it's resale value is.

And btw I am getting about my combined mpg figure in my car and it's a 2011 Vrs although it's only been calculated over 2300 miles since march 1st !

Exactly - they go off manufacturer so pointless imo as i would like to see you get 44MPG out of a 1.4TSI in an Octavia. Real World is easy to do. They could do it in house as they get long termers all the time off the various manufacturers. Even if they couldn't - there is a wealth of accurate information on the likes of Spirit monitor and Fuelly....Would people really lie and make up figures on this?! I didn't say depreciation - i said resale value - Depreciation as a percentage does not really work when you are comparing 2 cars with a different price - it is only good for a comparison on 2 cars costing say £14k and one looses 40% and the other 50% - It is then an easy comparison to make. The point i was making is that if the diesel was £1k more you are more than likely to see that back when you come to sell. So if you are getting it back at resale, you are saving money straight off. I never said that diesel is good for everyone, hence why i said 12k per year is still a good break point to go off (obviously depending on the type of journey you do). Finally, please don't compare me to lol - i like to write about factual information on here and i like to be able to prove my findings and information i give.

I heard (read) that. The long and the short of is you will get about 20% better fuel consumption in a diesel car with similar performance level to a petrol version but there is not an Octavia Diesel with the same VRS TSI and in fact none of the diesel/petrols are exactly equivalent performance so not easy to a direct comparison for fuel economy.

The current money off offers make the petrols super attractive I reckon. If the cost difference was only £1K without the Skoda money but with the money off offers at £4 to £5K different and if Diesel save us say (in the UK) £1K every 20 to 30 thousand miles then we would have do over 100K miles to recoup the difference before which time I expect there will be some new wonderful Skoda soon.

All a bit acemdemic to me the above as am mainly concerned about MPG in reference to the time I have to spend filling up the rather small tank. I do not pay for my fuel as I have a fuel card ie only get hit for 40% tax on as a BIK and can offset that. I split my driving over the last year between our TSI VRS and 1.8 TSI DSG L&K. Much to some peoples annoyance and disbelief I have had the TSI VRS range readout up to 570 miles and the DSGs up to 630 miles (do accept the fuel computer overreads by 5% or so) but I do do optimum journeys sometimes ie motorways, quite times etc. This equate to Skodas figures. I am over in Prague/CZ next week I will ask them if this is real world to them too, have a lovely summer!

Edited 13 August, 201114 yr by lol