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Petrol vs Diesel Cost Debate

24

Comments

  • jim2
    jim2 Posts: 21 Forumite
    Another thing to factor in is the price difference of the road tax of the differing types of engine.As the diesel is better for the environment the road tax is cheaper.
  • Yep bang on sir. I lost count of how times i had to write this down for customers that were adamant they wanted a diesel to save millions of pounds a year. Despite doing 5kpa and changing a car every 2years.

    However as one person has added the only factor to bear in mind is for a lot of marques (especially larger ones) the additional premium for diesel is largely recouped when it comes to resale time. Especially if it has done "petrol" mileage.

    I still find it funny when people come into me asking for a diesel. My 1st question is "Oh, do you do big mileage"
    They normally reply with "Oh about 8000 a year"

    I think to myself "tit..."
  • Mark_Hewitt
    Mark_Hewitt Posts: 2,098 Forumite
    An annual saving of £261.60 for the diesel. However... the car cost £1,570 more in the first instance. So dividing this into the cost differential will give the number of years you have to have the car in order to breakeven, which calculates as:

    6 YEARS!

    Even at 20,000 miles per year it is still 3.6 YEARS.

    Why should we buy diesel cars?

    But you are of course assuming that you will keep the car forever. You pay more for a new diesel car but you'll also get more for it when you sell it.
  • DGJsaver
    DGJsaver Posts: 2,777 Forumite
    jim2 wrote: »
    Another thing to factor in is the price difference of the road tax of the differing types of engine.As the diesel is better for the environment the road tax is cheaper.


    Yes maybe, per mile CO2 is lower than petrol, but it is sky high in particulates that don't warm the planet but just kill the people living there.
  • BillScarab
    BillScarab Posts: 6,027 Forumite
    I seem to remember reading somewhere that when all costs were taken into account you needed to do 30,000 to 35,000 miles a year for diesel to be cheaper.

    It's a very complicated decision. I have a compnay car and do around 14,000 miles a year. I've had diesels the last few times but I'm now thinking of switching to petrol as I think it will work out slightly cheaper.

    However I fancy a Mazda 6 next time and the petrol engine range is not great whereas they've recently launched a new range of diesel engines which look excellent so I may end up with diesel again anyway.
    It's my problem, it's my problem
    If I feel the need to hide
    And it's my problem if I have no friends
    And feel I want to die


  • I worked it out a few years ago, for every model in the renault range (it was a quiet day in december - no customers to worry about).

    Taking everything into account including RFL, service intervals and different service cost, residual values, price of fuel (@ the time the gap was only about 4p), purchase price, mpg's etc etc etc.
    Over 3yrs for most of the Renault range 18k-20k pa and you broke even having a diesel.
    This figure has probably gone up a bit now since the fuel price gap is now as much as 12p, this is starting to erode diesel residuals as well.
    This is for private users.

    The cost is squewed if you have a company car as you are taxed in relation to the BIK figure which tends to be lower for diesels!

    As has been mentioned several times because of the amount of money the idustry has poured into developing diesel engines they tend to be a lot better to drive than their petrol counter parts (ignoring sports cars).
  • k18dan
    k18dan Posts: 295 Forumite
    Part of the Furniture 100 Posts Combo Breaker
    some people like the power delivery of a 2.0 TD engine, rarther than a 1.6 NA... some people also enjoy there cars and take pleasure in how they drive rarther than just moneysaving... its your own choice? right?
  • pault123
    pault123 Posts: 1,111 Forumite
    Part of the Furniture 500 Posts Combo Breaker
    From a second hand buyers point of view I have to disagree with buying petrol.

    Say I want to buy a car, I have a budget in mind say £3000. I look at all my options at this price, I don't see a petrol for £3000 and then think "oh i would prefer a diesel I'll put my budget up to £5000 because it cost that much more originally!"

    I find a diesel for £3000 simple.

    The difference though is Torque. Bucket loads of Torque. The car pulls at 2000 revs to a degree a petrol could only dream of. Changing down a gear isn't required for overtaking like a petrol, simply put foot down and the Turbo kicks in. The refinement of a modern diesel engine is stunning, after driving a vw/audi TDI engine petrol's feel very clumsy.

    The biggest difference in a second hand diesel vs a petrol is performance overall. A 130 bhp 1.9 turbo diesel will do 0-60 in 8 seconds and pull on the motorway like a bullet train yet return a frugal 47-60 mpg.

    A 150 bhp Petrol (more horse power is needed in petrol for equivalent power) will do the 0-60 yet with a lot more revs needed and return a pathetic 20-30 mpg.

    Sorry but second hand buying a diesel wins.

    For brand new car buying then I think your mad! :p
  • alanrowell
    alanrowell Posts: 5,392 Forumite
    Part of the Furniture 1,000 Posts Combo Breaker
    Why should we buy diesel cars?
    Because a couple of years ago diesel wasn't substantially more expensive than petrol.

    Anyhow you also need to factor in the servicing costs - in the case of my diesel the service intervals are 18000 miles but for the petrol version it's every 12000 miles. Also take into account the lower VED for most diesels - I pay £25 pa as opposed to over £100 and if the proposals from my local council go through I'll be getting a residents parking permit for £10 instead of over £80.

    Buying 2nd hand though these days it's simply no contest - just buy a diesel
  • Bongedone
    Bongedone Posts: 2,457 Forumite
    Part of the Furniture 1,000 Posts Combo Breaker
    DGJsaver wrote: »
    Yes maybe, per mile CO2 is lower than petrol, but it is sky high in particulates that don't warm the planet but just kill the people living there.

    Have you heard of particulate filters ?
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