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Thread: Extremely poor fuel efficiency

  1. #1
    Junior Member
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    Angry Extremely poor fuel efficiency

    Hey guys,

    I have a 2009 X-type 2.2D 6-speed Auto and I'm having this car for about 2 months now. The main roads i run on are the urban ones. I need a good opinion because i find it extremely poor to have a 145 hp 2.2 diesel car doing 18mpg on urban driving. Now having said that, i am really not driving this car like a sports car. I have fairly light leg. My runs are mainly 10km ones. On extra urban driving i did get a 34mpg with 74mph at exactly 2000RPM. I can live with the extra urban fuel efficiency, but i find it hard to believe this urban fuel efficiency. This is a 2009 car. I had a 1993 BMW 325i, bigger engine, more hp and petrol and it would do better mpg then this jag.

    My jag seems to be in a very good quality for it's age. The engine runs very smoothly, no smoke coming out of the exhaust system, just had all oils and filters changed (including the one in the gearbox) and brand new tires on 32psi.

    Please help with some suggestions or opinions.

  2. #2
    Senior Member Willber G's Avatar
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    Hi gavril, welcome to the forum. Are you getting your figures from the computer or calculating between fuel fill-ups?
    55 X-Type 3.0 Sovereign estate, automatic, midnight blue, barley leather

    Previous cars going back through time:
    X-Type 2.2d SE estate, Alfa Romeo GT, Porsche 928, Lexus GS300, Mercedes E320, Mercedes E280, Rover 600, Vauxhall Senator, Opel Ascona, Fiat 127, Dutton Phaeton, Hillman Avenger

  3. #3
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    Hi Willber,

    From full tank to full up. Tried multiple ways to calculating them and they always come up that bad.

  4. #4
    Senior Member Willber G's Avatar
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    Fair enough. I'm afraid I don't have any further suggestions but you're in the right place to get them from others.
    55 X-Type 3.0 Sovereign estate, automatic, midnight blue, barley leather

    Previous cars going back through time:
    X-Type 2.2d SE estate, Alfa Romeo GT, Porsche 928, Lexus GS300, Mercedes E320, Mercedes E280, Rover 600, Vauxhall Senator, Opel Ascona, Fiat 127, Dutton Phaeton, Hillman Avenger

  5. #5
    Senior Member Rowley_1812's Avatar
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    That's crazy Gav ... is this a wind up?

    Are you seriously suggesting that your car manages less than 250 miles (402 Km) on a full tank?
    2005 (55) X-type 2.0d S saloon ~ Zircon/Champagne/Belize.

  6. #6
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    Definitely something wrong there In my 2.0d I would get around 40 mpg on slower roads, and 55 on faster ones. I would get it into a garage and get them to diagnose the fuelling as it sounds like something is wrong there and it is either leaking or supplying too much fuel to the injectors
    2004 X Type 2.0d SE

  7. #7
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    Hi Gavril,

    Are you based in the UK?
    2008 2.0D SE Saloon Chilli Red 160k miles

  8. #8
    Senior Member Morgellian's Avatar
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    Hi,
    Correct me if I'm wroug but 2000rpm should be about 90sh mph indicated. I must admit I just drive to gps speed.

    Signed, started planning 2020 road trips.
    Got ST brakes on the ST, not the X type
    2009 X Type 2.2D Sovereign Estate
    2008 Focus ST2 CR285 plus some interesting mods, only driven on dry Sundays.

  9. #9
    Senior Member Willber G's Avatar
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    Quote Originally Posted by Morgellian View Post
    Correct me if I'm wroug but 2000rpm should be about 90sh mph indicated.
    My 2.2 (manual) was about 75mph at 2krpm, same as the OP. There have been a few threads on this and that's about normal IIRC.
    55 X-Type 3.0 Sovereign estate, automatic, midnight blue, barley leather

    Previous cars going back through time:
    X-Type 2.2d SE estate, Alfa Romeo GT, Porsche 928, Lexus GS300, Mercedes E320, Mercedes E280, Rover 600, Vauxhall Senator, Opel Ascona, Fiat 127, Dutton Phaeton, Hillman Avenger

  10. #10
    Senior Member Billy2Jags's Avatar
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    For it to be that bad you must have a leak somewhere.
    I'd say it was physically impossible too burn that much fuel and still run normally.
    Current. 2011 XFS Portfolio. Lunar Grey (LJZ) / Black (LEG).
    Previous. 2012 XF Premium Luxury. Remapped 307 BHP / 449 lb/ft. Italian Racing Red (CAH) / Barley
    Previous. 2005 55 reg 06MY 2.0D Sovereign. Jaguar Racing Green - HGZ.
    In storage.1988 Daimler XJ40. Bordeaux Red / Doeskin.

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