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Thread: Now Shall I go For Diesel....

  1. #1
    Regular Member Ean's Avatar
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    confused Now Shall I go For Diesel....

    Hiya!

    I have a 2003 Signum, 2.2 petrol - great car!

    But I now travel from Diss to Norwich every day...well 5 days a week.

    I am getting 30 ish MPG in the Signum at the mo, and am wondering, if I should look for a veccy or signum diesel?

    Forgetting the cost of buying a used car;

    1- will I get a better MPG? if so what can I expect, based on me getting 31 out of my petrol.
    2 - Which engine to go for? (ie. any BAD engines to avoid)
    3 - dont really care about 0-60 or power.

    Any help would be grand, ideas, etc...

    Thanks,
    Ian.

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    Regular Member BoroDave74's Avatar
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    Firstly, commiserations on having to deal with the A140 five days a week.

    I run my '04 8v CDTI into County Hall everyday from Attleborough, so a 35 mile round trip. I've averaged 48.9mpg this year and the work run, and general Norfolk driving is 99% of the driving Ive done.

    My understanding from this forum so far is, of the CDTIs, not the 04 and earlier DTIs, someone lese will eb along in the minute to advise on those...
    Power/torque go for the 3l CDTI
    Least things to go wrong 8v CDTI
    Best combination of the two 16v CDTI.

    I see plenty of 16v SRI's for sale, I think if you take one for a test drive you'll be buying. Money little object? Thurlow Nunn/Hartwell for a 58 reg 16v SRI/Elite with all that warranty left. hth

  3. #3
    Regular Member m8internet's Avatar
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    Several factors to consider
    If you are doing more than 30K miles a year, then diesel will save you money in the long term
    If you are doing between 20K and 30K miles a year, then there is little difference
    If you are doing less than 20K miles a year, petrol is cheaper than diesel

    If you are keeping the car longterm, then diesel will hold its value slightly better, even if high mileage

    Servicing costs are about the same, although be aware most diesels are heavier so expect slightly more wear and tear on brakes and tyres (especially between more powerful / larger engines)
    Repairs costs are much higher in a diesel, but there is generally less to go wrong

    The 1.9 CDTI is an average engine, although if possible look for the 150PS version
    There are some known issues like ceased swirl valves, but so far not as many problems as the earlier 2.0 Di and 2.0 DTi

    The 3.0 V6 CDTi is not a VX engine, it is an Isuzu, and is generally very reliable
    There are some known issues like soft sump seals, blocked fuel pump suction valves

    Both engines also suffer faulty injectors, but that is a well known problem with common rail diesel
    Sadly that's expensive with entire new injector sets costing between £600 and £1800

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    Regular Member Graham's Avatar
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    Vehicle : Focus

    Trim : Titanium

    Engine : 1.6 TDCI

    Year : 62

    Mileage : 9K

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    my 2.2 dti averages 50mpg to and from work on A roads. its been the best car i ve had. Dont rule them out for a cdti.

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    Regular Member mark_647's Avatar
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    Ihave a CDTi 150, great power, computer says I averagr around 45/48 but I always reach 580/610 miles out of a tank, 60 miles a day round trip for work.

    Im very happy.

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    Regular Member Telly Addict's Avatar
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    Vehicle : BMW e92 335d

    Trim : M Sport

    Engine : 3.0 TT

    Year : 2008

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    Quote Originally Posted by m8internet View Post
    Several factors to consider
    If you are doing more than 30K miles a year, then diesel will save you money in the long term
    If you are doing between 20K and 30K miles a year, then there is little difference
    If you are doing less than 20K miles a year, petrol is cheaper than diesel
    I thought the above didn't matter anymore seeing as diesel and petrol are the same price at the moment, and have been for several weeks now.???

  8. #8
    Regular Member FuzzyOne's Avatar
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    I do the 140 route a few times a week, average around 60+

  9. #9
    Regular Member Readster's Avatar
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    Diesel is better but, the cost of changing the car can kick a lot of fuel savings into touch...unless you want a newer car

    Everyone has a fav, I'd recommend the 120 1.9 diesel as a good compromise between power, reliability & economy.

  10. #10
    Regular Member Dan_BlackSRi's Avatar
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    Vehicle : Vectra SRi

    Trim : XP1

    Engine : 1.9 CDTi 150

    Year : 2007

    Mileage : 66000

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    You WILL save money with a diesel no end mate, you will be shocked how much further a tank will get you compared to your current 30mpg.

    As for which one, you just can't argue with how the 150's drive and the power they have, but you can argue with their reliability, that being said I would reccomend these all day long providing they have a warranty. I get about 45mpg for my weekly commute, but that includes a reasonable amount of town driving too.

    If your budget won't stretch to a CDTi with a warranty get the 120, if it does, get the 150.

    Simples

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