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Diesel Vs Petrol?


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#1 NorthSussex

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Posted 27 January 2012 - 05:56 PM

Having followed some of the tags, I am now unsure if there are savings to be had by buying a diesel car over a petrol car. As I see it. :--

Diesel Pros.

Lower road fund licence.
More MPG.
More torque.

Diesel cons.

Higher purchase price
Higher fuel cost. (about 10p per ltr.)
Higher maintenance cost (£1000+ for a DPF @ 75k?).

Over an 8-10 year period, do you save by having a diesel?

Or have I missed something? (Willing to learn).

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#2 rojariggs

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Posted 27 January 2012 - 06:37 PM

It depends on your driving amongst other things. If you're doing a lot of miles then the difference in MPG can be enough to make up the difference.

With regard to things like the DPF then it depends how long you keep the car for. If you do 30k miles a year and keep your car for two years then you will save.

If you do low mileage but can buy a diesel cheaply or second hand then you can still make savings.

To say either diesel or petrol is the cheapest is only possible in each individual's situation.

#3 TDCiST

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Posted 27 January 2012 - 07:23 PM

The newer Coated For Life DPF's apparenty don't need changing at 75K providing it regens regulary and correctly..

#4 Torque

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Posted 27 January 2012 - 07:40 PM

You've forgotten residual value, I have a 2011 Octavia vRS CR diesel, I only do about 10k a year so looking at it from a miles covered pont of view it's not really worth having a diesel especially these days when diesel is so much more at the pumps than petrol however, the residual value is easily £2k more than the petrol version and this, together with the fact that I much prefer the way the diesel drives makes it easily worthwhile in my oinion.

I picked up an ex demo Ka Titanium TDi for my wife who does approx 15k a year so, pretty even stephens between it and a petrol, but again residual value will be a little bit more when we come to sell and for the type of driving she does it's so much better suited.

You pays your money you takes your choice :)

#5 btmaldon

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Posted 27 January 2012 - 08:37 PM

I think the type of journeys you do come into play as well. The modern diesels do not like short runs, stopping and starting type use. They clog up far too easily and require extra maintenance.

If you are doing the miliage as mentioned by the others and a decent run most times it is being used, the diesel comes into its own.

#6 AlanW

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Posted 27 January 2012 - 08:37 PM

I have been driving diesels for quite a number of years, and like most people I love the torque that a diesel engine produces. BUT, my circumstances have changed and I only do around 6000 miles per year and I have already had to replace the EGR valve coz it sooted up due to the engine not getting warmed up enough.

My journey to work is less than 7 miles and the temperature gauge hardly moves of cold before I get to work.

Add to that the increase in the cost of diesel vs petrol, I have made the decision to go back to a petrol engined car, namely the 1.6 EcoBoost Focus.

So tomorrow my mint condition, 2006 ST Mondeo 2.2 diesel estate that I have had from new with just 30k miles on the clock goes into the dealers and I'll drive out with the Focus.

In truth the ST Mondeo is going to be one hell of a car to better, in every aspect and only time will tell if I have made the right call or not?

#7 Barnyg

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Posted 28 January 2012 - 05:46 AM

Same with me. Early retirement means i'm now doing about 5,000 yearly instead of 15,000. Mondeo going in on Monday in exchange for a Focus 1.6 Ecoboost.

#8 mitch84

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Posted 28 January 2012 - 10:34 AM

Hi

I own a diesel focus and before that I had a diesel Fiesta , Ive never been a long haul driver and average about 6k-7k a year my work is about a 14mile trip so I rake up about 30miles a day when working.

I do the ocassional longer journey when out for the day , I find it find it cost effective to have a Diesel unless you only use a car around town.

I average 52mpg on my journeys too and from work and thats not motorways and also involes a bit of stop/starting ,and when I do longer motorway journeys I get close too 60mpg.

I feel I'm saving a lot at the pumps as I dont need to go as regular, and also when the tax is due.

Also the difference in petrol prices is on average about 7p difference on some forecourts its a lot less .

In the long run a diesel will save you money, I certainly feel Ive saved.

#9 TDCiST

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Posted 28 January 2012 - 04:09 PM

So tomorrow my mint condition, 2006 ST Mondeo 2.2 diesel estate that I have had from new with just 30k miles on the clock goes into the dealers and I'll drive out with the Focus.

In truth the ST Mondeo is going to be one hell of a car to better, in every aspect and only time will tell if I have made the right call or not?


A truly sad day mate!! Having a mondeo ST TDCi in the family i know how u feel!!

#10 rojariggs

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Posted 28 January 2012 - 06:07 PM

Real life example:

My previous car was a Volvo V50 1.8 Petrol. Monthly costs were something like this:

Petrol: £160pm
RFL: £20pm
Insurance: £40pm
Total: £220pm

I do fairly low mileage but the costs for my diesel Fiesta work out like this:

Diesel: £90pm
RFL: £1.60pm
Insurance: £20pm
Total: £111.60pm

Now even taking into account that I had to pay to go from the old car to the Fiesta which I have financed and costs me £80pm I am still £30pm better off every month and driving a better specced newer car.

I bought my car when it was a year old which means it was still more than a petrol would have been but the difference is less than if I had bought new. If I do have to do a longer journey that journey costs far less than in the old car so I can make more trips for less money. Plus driving a diesel is much more relaxed on the daily grind as you let the torque pull you round rather than chasing revs.

Diesel's a no brainer.

Cheers

Rog

#11 NorthSussex

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Posted 28 January 2012 - 06:56 PM

Hi Rog,

I was thinking more along the lines of a diesel v petrol in the same car, ie, a Focus deisel or petrol of the same engine size and age, not 2 different size cars and different ages. This would give a more accurate comparison to running costs, I am sure any Fiesta is going to be more economical to run than an older 1.8 Volvo. I am not biased in any way, just interested and want to be well informed when I next change my car.

Norman.

#12 rojariggs

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Posted 28 January 2012 - 08:06 PM

Hi Rog,

I was thinking more along the lines of a diesel v petrol in the same car, ie, a Focus deisel or petrol of the same engine size and age, not 2 different size cars and different ages. This would give a more accurate comparison to running costs, I am sure any Fiesta is going to be more economical to run than an older 1.8 Volvo. I am not biased in any way, just interested and want to be well informed when I next change my car.

Norman.

Fair comment.

Mind you, The Volvo averaged about 37 mpg which isn't far off what some guys on here quote for their petrol Fiestas.

#13 NorthSussex

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Posted 31 January 2012 - 12:56 PM

Thanks for all your thoughts.

Having read all the replies, I now know a lot more about the advantages and disadvantages of diesel and petrol engines.

But now it looks like there is a better alternative to both, the Ford petrol EcoBoost engine, providing it is reliable and not too costly to maintain, time will tell.

#14 jimrex

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Posted 31 January 2012 - 01:36 PM

I know real world comparisons for two completely different cars have been mentioned above, but I was quite surprised with the mpg results I got from going from petrol to diesel. I never seem to fill up anymore! On top of that, the Focus is £20/year to tax rather than £110 for my Fiesta, and was less to insure for me.

It really is worth researching the figures though, for me it made sense but for many it wont as the gap between petrol/diesel is getting closer. I agree that the smaller petrol engines with turbos seem to be the way things are headed and would be interested to know if the ecoboost is as 'eco' as the name suggests! I might actually go and test drive one...

#15 AlanW

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Posted 31 January 2012 - 10:08 PM

A truly sad day mate!! Having a mondeo ST TDCi in the family i know how u feel!!


To make matters worse, the ST is still sat on the drive while the dealer is waiting for the paperwork to come back from the DVLA so that I can drive in with the Mondeo and drive out with the new Focus with my private plate on.

It deeply saddens me every day to look at it sat on the drive, all polished and sparking........ :o

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