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    • Former MSE Wendy
    • By Former MSE Wendy 13th Nov 07, 10:15 PM
    • 868Posts
    • 1,782Thanks
    Former MSE Wendy
    Cheapest Petrol & Diesel Discussion Area
    • #1
    • 13th Nov 07, 10:15 PM
    Cheapest Petrol & Diesel Discussion Area 13th Nov 07 at 10:15 PM

    This thread is specifically to discuss the

    To discuss or ask a question about this article: click reply
    Last edited by MSE Researcher; 15-06-2010 at 10:06 AM.
Page 3
    • anewman
    • By anewman 27th Nov 07, 6:41 PM
    • 8,786 Posts
    • 6,259 Thanks
    Thanks for the heads up about somerfield, is that Somerfield own brand petrol? - I didn't know they had any petrol.
    Originally posted by Wig
    I didn't catch the exact details, it was on a radio in a shop I went into so not even sure which radio station it was Sorry I'm no help at all there, but I guess if Somerfield is your thing and you know a store with a petrol station it could be worth checking out. Their own website is no help with no details of any offer, and only lets you search for stores with a car wash, not one's with a petrol station.

    Newport is also cheap, as cheap or sometimes cheaper than Cardiff. I put it down to healthy competition, Outside Cardiff & Newport there isn't the space to have more competition and Tesco has already taken most of the small valley towns.
    Originally posted by Wig
    Other places that tend to be cheaper are Caerphilly Asda and Morissons. Also Rogerstone Morissons is generally among the cheapest.
  • m1978
    As a "key" worker on shifts, it is almost impossible for me to get to work on public transport apart from two shifts,7-3 9-5...

    It always makes me laugh when I hear the government say better transport links this better transport link that to justify putting petrol up.

    I live in a commuters village, there are no buses to cardiff and also the train network allows one an hour with the earliest at 630 and the last at 2230.

    I would honestly love to see a member of the transport service live in my village and see how hard it is to get to work, then perhaps they would start living in the real world.

    I am left with no choice but to take a car, and at present due to petrol prices im struggling to do that.
  • ChepSteve
    In any event the way I always coast is to dip the clutch
    Originally posted by Wig
    Wig, as an engineer, I feel compelled to point out that riding the clutch like that really is a dreadful idea from a moneysaving point of view, because it will wear out the thrust bearing in the clutch in a fraction of it's normal lifespan, as well as aging the tines of the clutch spring. If either of these fails, you're looking at a full clutch change (there's so much labour involved in getting at the clutch that you always change the whole lot) which is a really expensive repair, let alone the hassle and potential expense of a breakdown. A car's clutch is only really designed to be disengaged briefly to facilitate a gear change, doing so for long periods is asking for trouble sooner or later.

    Going downhill in gear without touching the throttle really is the best way - it doesn't use any more fuel at all, honestly!

  • fletcher1985
    i also work nights so if they put a bus on from 10pm and 1 at 5am i might use it but then again i probably wont as it would cost me double the amount on a bus then it would in my car, it really anoys me when they say on the news they are putting petrol/diesel prices up to make people use public transport and they know for a fact that it wont, its an excuse so that they can make more money from petrol/diesel that really winds me up when they say that. the public transport is a joke where i live it cost £2.90 or £3 for a return so add that up over the week which would be £15 i put £15 of diesel in a week and that takes me to work and back which is 72 miles a week and another 50-60 so i would loose out if i got a bus and i dont have to wait hours in the rain for it to turn up thats if it does turn up.
    Last edited by fletcher1985; 08-01-2008 at 11:33 PM.
    My first ever win, I won a tray or wrigleys extra, not recieved yet though. Also i just won a pair of ticket to the bike show at the NEC, i have just won a competition for a Calin Bleu wraparound sling will be a great gift for my friend at christmas, family ticket to newquay zoo.
    • Wig
    • By Wig 9th Jan 08, 8:23 PM
    • 13,669 Posts
    • 7,367 Thanks

    Well you had better tell that to everyone who sits at traffic lights with their clutch depressed, as that is no different. Yes it might wear it a little (though I don't understand the mechanics of how it works yet) but not to any significant degree. I have no problem with clutch wear on my cars - no more than expected - 80,000 miles or so..... ummm the friction plates wears before the bearing does - atleast on my cars it does, so that shows it's not a problem for me.
    • LosEndos
    • By LosEndos 11th Jan 08, 1:55 PM
    • 48 Posts
    • 9 Thanks
    Can someone explain how the calculation in the Driving Down Costs example is worked out?
    It has 15000 miles at 35 mpg costing 100.9p/l average fuel cost as £2160.
    But I get:
    15000/35 = 428 gallons
    428*4.54 = 1943 l
    1945* 1.009 = total fuel cost of £1960 ????

    Then using cheap petrol (96.5p) the saving on the above is £83 not £270 as shown in the table.
    Last edited by LosEndos; 11-01-2008 at 2:39 PM.
    • Wig
    • By Wig 11th Jan 08, 10:05 PM
    • 13,669 Posts
    • 7,367 Thanks
    Can someone explain how the calculation in the Driving Down Costs example is worked out?
    It has 15000 miles at 35 mpg costing 100.9p/l average fuel cost as £2160.
    But I get:
    15000/35 = 428 gallons
    428*4.54 = 1943 l
    1945* 1.009 = total fuel cost of £1960 ????

    Then using cheap petrol (96.5p) the saving on the above is £83 not £270 as shown in the table.
    Originally posted by LosEndos
    I dunno what you're talking about, but on those figures it works out like this

    15,000/35 = 428,5

    428.5 x 4.546 = 1948 l

    1948 x 1.06 = £2065 @ £1.06 per litre
    1948 x 1.009 = £1965 @ £1.009 per litre
    1948 x 0.965 = £1880 @ 96.5 p per litre (where do you get petrol that price these days?)

    Which is almost what you got but just a little bit more accurate, I rounded to the nearest pound.

    Ok, I see you're on about this bit....follow this link

    For a sample ten postcodes when the average price within a 5 mile radius was 100.9p, the average highest price was 106p and the average cheapest price 96.5p.
    Following all the mechanisms above can save you cash. For someone who drives 15,000 miles a year averaging 35 miles per gallon (12.4 Km/litre), just buying petrol at the average UK cost in November 2007 is £2,160, yet buying at the average cheapest petrol station in any area would save more than £200. Of course prices change over time but the gap between the average price and the cheapest is pretty constant. Buying the petrol on a cashback card and improving your driving could save you a further £200.
    To work out the initial rough cost of running your car, the VCA's (Vehicle Certification Agency) has a rough fuel cost calculator (it's best for new cars) which will work out roughly how much it'll cost you to run your car over the course of a year.

    Fuel Cost Cutting (as at November 07)
    Annual Mileage, annual cost (1), Using cheapest fuel (2), cashback card saving (3), driving efficiently (4), Total Saving.

    5,000 miles £720 £630 £615 £535 £185

    10,000 miles £1440 £1260 £1230 £1070 £370

    15,000 miles £2160 £1890 £1845 £1605 £555

    I agree the figures are incorrect, if the avg fuel price in the area is 100.9p/l then the avg fuel cost should be £1965 not £2160 even using the most expensive petrol the cost would be £2065.

    The differeence between the avg price and the cheapest price is £85
    The difference between the expensive price and the cheapest price is £185

    Then you add on 1p per litre clubcard savings = £20
    Then you add a further saving of 15% by using a light foot and increasing your mpg

    35mpg + 15% = 40.25mpg
    15000/40.25 = 372
    372 x 4.546 = 1694
    1694 x .965 = £1635 saving £245

    Total saving = 245 + 20 + 85 = £350

    *and even that's not accurate because if you have a light foot you are no longer going to save £85 on the fuel difference, but I'm not going to work that out.
    Last edited by Wig; 11-01-2008 at 10:10 PM.
    • LosEndos
    • By LosEndos 12th Jan 08, 7:44 PM
    • 48 Posts
    • 9 Thanks
    Thanks for the checking - I thought it was wrong. Sorry I made it hard by not putting the link in. I thought about it after I posted, but then never got around to it.

    So In summary, 'save money on petrol' article is numerically wrong and presents a better case than it really is.

    Still worth doing - but not going to give the rewards published.
  • ncb
    I might be being a little confused but the fuel saving advice seems to be self cantradictory. On the one hand I should always keep a couple of gallons in the tank (about a 1/4 it suggests), and on the other hand I should clear clutter out of the car to save weight? Surely, I should therefore start by ensuring I drive with the tank never more than say 1/2 full and relish those trips where I get to the final vapours and drive ever such a lighter vehicle!!

    Seriously, anyone got any advice as to which is the better saving - taking the risk of a pricier fill up (well few litres to let me looking for cheap) and potential loss of loyalty, or lose a couple of gallons of weight, and that is heavy when it is water in the watering can and fuel can't be that different?
    • Crabman
    • By Crabman 13th Apr 08, 11:59 PM
    • 9,739 Posts
    • 7,171 Thanks
    Hi ncb & welcome to MSE

    This threadis a discussion about fuel saving tips, including the effect of having a full tank of fuel.
    I'm a Board Guide on the Savings & Investments, ISAs & Tax-free Savings, Public Transport & Cycling, Motoring and Parking Fines, Tickets & Parking Boards. I volunteer to help get your forum questions answered and keep the forum running smoothly. Board Guides are not moderators & don't read every post. If you spot a contentious or illegal post then please report it to (it's not part of my role to deal with this). Views are mine and not the official line of

    • waynesbar
    • By waynesbar 17th Apr 08, 7:22 PM
    • 3 Posts
    • 2 Thanks
    Point of Law
    Riding the clutch or having your car out of gear, will in all probability make little or no difference to your fuel economy, but In the UK under our highway code it is illegal to freewheel as you do not have control of the car, this can result in an accident or if free wheeling down hill excessive brake usage. Both of these results will in cure cost that will possibly negate any money saved not to mention any fines if found to be driving a car without control.
    • tomstickland
    • By tomstickland 17th Apr 08, 8:51 PM
    • 18,904 Posts
    • 15,428 Thanks
    In Gloucester and Cheltenham then Waitros have the lowest price regular unleaded, at 103.9p/Litre, compared with the most expensive at 10.9p/L.
    So it's 6p/Litre, which is 2.40 on a 40L fill. Quite significant if happen to passing near the cheapest station anyway.
    Happy chappy
    • countrygirl27
    • By countrygirl27 21st Apr 08, 12:42 PM
    • 116 Posts
    • 320 Thanks
    I have been using for ages and decided that as Tesco was nearly always cheapest I'd buy my fuel there. Then I worked out my fuel consumption, (approx 30 p/week) got a clubcard plus card so I double my points and pay for the fuel that way. So now I get 8 points for 1. Then I collect all my clubcard vouchers together and use the deals thing to pay for the car to be MOT'd and serviced at Nationwide Autocentre and pick up cc points there too. Its saved me an absolute packet, without changing my habits and been really easy to do. Last month I had an MOT, full service and the brakes repaired and it cost me 55! Dont know if it would help anyone else.

    Im thinking of maxing my cc points even more by getting the cc credit card so I can earn points on my shopping elsewhere too!
    • Lima
    • By Lima 26th Apr 08, 9:02 PM
    • 62 Posts
    • 32 Thanks
    Find the cheapest fuel in your local are
    This is a handy website that you can use to find the cheapest unleaded, diesel etc.... in your area by postcode:
    • Hintza
    • By Hintza 26th Apr 08, 9:38 PM
    • 19,013 Posts
    • 13,960 Thanks
    Do we not need a site
  • fzbucks
    In my experience coasting results in poorer performance of the brakes when having to brake hard and a substantial increase in skidding.

    When I first passed my test I used to coast a lot until I had a bump due to skidding whilst coasting. The car goes into a skid because the wheels lock up when the brakes are applied and the engine is disengaged so does not push the wheels.

    This was in a pre ABS car but even the ABS effect is reduced if the engine is disengaged.
    • Happychappy
    • By Happychappy 27th Apr 08, 10:22 AM
    • 2,749 Posts
    • 2,796 Thanks
    The site may be good but you need to give inside leg measurement, grannies middle name etc, just to view prices, didnt bother, but thanks for the post.
  • archived user
    With the rate that prices are changing, the site is out of date most of the time.
  • happypenguin
    driving cheaply and carbon free
    I have found new cars by Think - which are electric, available now with a good mileage range

    Can anyone tell me how the carbon dioxide produced by a power station to provide the electricity to power a car compares with the carbon dioxide produced by a petrol driven car covering the same mileage - say 100 miles ?

    i.e. is it an absolute waste of time buying an electric car in order to cut omissions ?
  • richardp
    Thanks for the checking - I thought it was wrong. Sorry I made it hard by not putting the link in. I thought about it after I posted, but then never got around to it.

    So In summary, 'save money on petrol' article is numerically wrong and presents a better case than it really is.

    Still worth doing - but not going to give the rewards published.
    Originally posted by LosEndos
    I don't know if helps, but I put together a little website that does some of those calculations for you:
    It is a bit basic at the moment, but I have plans to improve it over the next few weeks (day job permitting!).
    Feedback/suggestions welcomed.

    [As I mentioned above the url I posted is my site. I hope that doesn't constitute spamming. Please remove it if it does.]
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