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Thread: Petrol vs diesel

  1. #1
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    Petrol vs diesel

    Hi there,
    I have had my 06 disco 3 v6 for a year, the car was well maintained by the previous owner and drives like new despite the 220k km on the clock.
    It is insane however how bad the fuel economy is 19 around town and 24 when towing.

    Thing is I am planning to use it more for longer trips, and I’m a bit worried about spending money on a car with so many km, is the car a ticking wallet bomb? Should I sell the car and get a diesel? Which of the two is more reliable long term in average? By long term I mean to make another 100k km

  2. #2
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    Too many variables, Balga. Selling a good 06 D3 for a good 2014+ D4 diesel will cost, I dunno, a net $40k I suppose. That pays for a lot of petrol. It also depends on the type of touring. If grey nomadding in settled areas where fuel is readily available, then the relative simplicity of a petrol engine is an advantage. But if you'll be travelling in remote areas and planning on installing a second fuel tank, then diesel makes sense.
    In any event, you need to have confidence in your car. Nothing wrong with a well maintained older vehicle, particularly if you undertake your own maintenance and repair. Carry essential spares and a few select tools. If not, get it thoroughly checked by a good Indie at least six months before travelling.
    2013 D4 expedition equipped
    1966 Army workshop trailer
    (previously SII 2.25 swb, SIII 2.25 swb & lwb, P38 Vogue, 1993 LSE 3.9V8 then HS2.8)

  3. #3
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    I have a V6 petrol, and I love it!
    We tow a 16" van and I'm ok with the economy - I didn't but it to be cheap to run!
    It gets serviced every 6 months, and having just had a service, it is running like a dream
    On country runs, I get 13 - 15 l/100k and towing is around 19-20.
    I don't use it as a daily driver so the city fuel consumption is not an issue for me, but I wouldn't trade it for anything at the moment.
    2012 L320 Range Rover Sport Fuji White
    REMLR 012
    No 5 Trailer ARN 177-295
    2006 Disco 3, 4L V6 Petrol SE Deceased Feb 26 2023
    SOLD Engineers Trailer - no id
    SOLD RAAF 231194 Perentie 110 GS - SIR ANGUS
    SOLD 4MP COY Series 3 FFR 30-209

  4. #4
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    If I buy another Disco to replace my dead 2.7 D3 it will only ever be a petrol powered one. I have no desire to own another diesel Disco. Nothing wrong with a V6 petrol D3, yes they do use lots of fuel but they tend to be reasonably reliable.
    Cheers,
    Terry

    D1 V8 (Gone)
    D2a HSE V8 (Gone)
    D3 HSE TDV6 (Unfortunately Gone)
    D4 V8

  5. #5
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    Quote Originally Posted by DieselLSE View Post
    Too many variables, Balga. Selling a good 06 D3 for a good 2014+ D4 diesel will cost, I dunno, a net $40k I suppose. That pays for a lot of petrol.
    Yes, most likely. I only paid mine $8k, and then immediately spent about $4k in a serious service, but still overall cheap compared to anything similar running that good.

    It also depends on the type of touring. If grey nomadding in settled areas where fuel is readily available, then the relative simplicity of a petrol engine is an advantage. But if you'll be travelling in remote areas and planning on installing a second fuel tank, then diesel makes sense.
    overall range is a bit of a concern, so I'm definitely looking into a second tank, or at least a way of carrying a few jerry cans.

    In any event, you need to have confidence in your car. Nothing wrong with a well maintained older vehicle, particularly if you undertake your own maintenance and repair. Carry essential spares and a few select tools. If not, get it thoroughly checked by a good Indie at least six months before travelling.
    I guess that the thing that worries me the most is the reliability of the air suspension, I had to change the two front struts and that left me wondering how much life the air pipes in the system have got left.

    Quote Originally Posted by [COLOR=#3E3E3E
    Aussie Jeepster][/COLOR]
    On country runs, I get 13 - 15 l/100k and towing is around 19-20.
    Closest I got in a country run was 15.5, but I guess the big muddies don't really help with fuel economy. What kind of tires are you running?

  6. #6
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    Our D4 SC V6 was 10k cheaper than an equiv diesel...petrol is cheaper atm and we love the 250kw of power esp when towing.

    Sure range is an issue but we don't tour in it. Towing is a breeze. Worst fuel 15.8...best 12.8..ave is @14.5 but we live in the hills.

    Much simpler engine to maintain albeit the SC needed a coupler and water pump fix but no belts. Plugs might be costly to do tho.

  7. #7
    josh.huber Guest
    If you get serious about the second tank I think I know where there is one looking for a new home. Just pm me.
    The diesel will be better on fuel per k. But maybe if you costed a petrol D3 compared to a diesel D4 over say 50,000 ks the petrol might be closer then you think.
    I love diesels. I love my diesel.
    The whole crankshaft thing, "is what it is" in my head. But inlet manifolds, hpfp, timing belts, oil cooler leaks, water junction (thermostat housing that isn't a thermostat) are all real items that cost owners. The hpfp not as often, but you read about it quite a bit.
    With buying a 2014 you'll likely get something that's approaching these k's. If you're happy with the rest of your car I would add a tank and do some good trip planning. That'll leave you with plenty of coin saved from change over for maintenance you may require or better a longer holiday.
    With the air suspension nothing to be afraid of with the lines. They are static and don't give any trouble if treated correctly when working on them. Trucks for example are covered in them and wind the clocks over multiple times on factory fitted lines.

  8. #8
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    If i had my time over i would have gone petrol .

  9. #9
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    Quote Originally Posted by INter674 View Post
    Our D4 SC V6 was 10k cheaper than an equiv diesel...petrol is cheaper atm and we love the 250kw of power esp when towing.

    Sure range is an issue but we don't tour in it. Towing is a breeze. Worst fuel 15.8...best 12.8..ave is @14.5 but we live in the hills.

    Much simpler engine to maintain albeit the SC needed a coupler and water pump fix but no belts. Plugs might be costly to do tho.
    Agreed petrol engines in Disco’s are so much easier and cheaper to maintain and the reliability of the petrol engined Disco’s has proven to be impressive in comparison.
    Over 90% of people who buy these vehicles will never tour and of those that do the vast majority will only ever go where petrol is freely available, so owning a diesel is for many a choice more than anything else. We love our V8 D4, on the highway it averages 11 litres per hundred at around 115kph, at around 100kph it averages just under 10 litres per hundred.
    Having towed a large box caravan sized 3 ton tandem axle trailer at the speed limit several times it averaged around 17 litres per hundred, which to us is no big deal either.
    Cheers,
    Terry

    D1 V8 (Gone)
    D2a HSE V8 (Gone)
    D3 HSE TDV6 (Unfortunately Gone)
    D4 V8

  10. #10
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    Back when I was doing up to 45,000 kms a year, a diesel was the only choice for me. Now that I do around 5,000 kms a year - I would consider getting a V8 petrol if buying again.

    The TDV6 is still a great engine and coming from a Td5 D2 I have not even felt the need to re-map the D3 yet. It never feels lacking for power and is easy to drive around town (secret is to use sports mode as it makes it more responsive and gets better fuel economy).

    Great to see Ford continuing to give the TDV6 an extended life in the F-150, the new Bronco, and even potentially coming to the next Ranger and the VW Amarok.

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