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Jaguar X-Type



  • jaxs1jaxs1 Posts: 2,697
    Between the owners manual and the fuel filler door instruction, why were you confused and felt the need to ask the salesman for his advice and opinion about fuel?
  • While it has not happened to me...several other owners have had their warranty voided by NOT using the prescribed of them admitted he hadn't used premium all the time and the dealership said the gumming up of his engine was caused by that (not entirely likely) but he had to pay for the repairs out of pocket because of this admission. I would recommend either 1) only using premium, 2) alternating between the two, 3) using regular but adding a fuel adder/cleaner occassionally, or 4) using regular but NEVER admitting it to the dealer. If you choose #4, be prepared to fight if your car has problems and they try and blame you rather than fix the problem.

    Good luck!
  • desertguydesertguy Posts: 730
    "...several other owners have had their warranty voided by NOT using the prescribed gasoline.."

    Oh come on, get real. Anyone that would let a dealer tell them their warranty was void because of the gas they use is pretty guilible. I have been on Several Jaguar boards for over 4 years and I have NEVER heard that claim on any of them. My Jaguars had premium when I got them from the dealer and that was about the last tank they ever had. We have three grades where I live and I use the middle grade which is 89 octane. Cars have always run perfectly. If you want peak performance, perhaps 91+ octane would be better but I'm no longer a boy racer! It is a waste of money to put in higher octane than a car needs.
  • robr2robr2 BostonPosts: 7,609
    I will respectfully disagree. If the manufacturer recommends premium, it is because the vehicle is tuned to perform best and return greater fuel economy on that grade of gasoline.

    Using a lower grade in those cases usually results in a false economy. The vehicle's ECU will adjust the performance of the engine to accomodate the lower octane. But many times, that reduced performance is accompanied by reduced fuel economy. The savings in fuel purchases is offset by the lower economy. To top it off, you also get less performance.

    However, the reverse is not the same. Using 91/93 in a vehicle designed to run on 87 usually will not produce increased performance or fuel economy.
  • Actually, my questions to the salesman and mechanic regarding the fuel type were during the 'research. stage' of the process. It wasn't until after I filled the car up the first time that I saw the posted sticker and realized I may have gotten some misinformation.
  • Thanks to all of you for your input, I have always used premium , also thinking that the difference in fuel price may be offset by reduced mileage - - but just wondered if there was some information out there I was unaware of.
  • I'd try calling JAG USA directly and discussing it with them. Hopefully they'll intercede for you, and, get your problem solved. I just went through this with a 05 Chrysler that was making horrible groaning noises. My dealer fooled around with the car for 3 months and couldn't fix it, and, stopped returning my calls. I called the factory, was set to a different dealer, and the car was fixed in 4 hours.

  • tom213tom213 Posts: 49
    Here's my experience with the proper gas to use: The day we picked up our 2006 X-Type, I asked the sale person if I must use the premium gas, she said (and she has been selling Jaguar, Mercedes, and Volvos for over 7 years) that all their cars receive the regular unleaded gas when sold. I found that a little hard to believe for the really high dollar rides, but took her word anyway and have just turned 4000 miles without any problems using the cheap stuff (I'm knocking on wood as I type this).
  • robr2robr2 BostonPosts: 7,609
    I asked the sale person if I must use the premium gas, she said (and she has been selling Jaguar, Mercedes, and Volvos for over 7 years) that all their cars receive the regular unleaded gas when sold.

    That's because they are paying for that tank of gas.

    ...and have just turned 4000 miles without any problems using the cheap stuff

    Keep track of your gas mileage for a few weeks with regular and then switch to premium for a few weeks. You may be suprised at the results.

    Personally I trust the manual more than the salesperson when it comes to fuel requirements.
  • Thanks oldengineer, I will try calling Jag directly.
  • desertguydesertguy Posts: 730
    I like the way my Toyota Highlander manual phrases it:

    "Use a minimum of 87 research octane and for the best performance, use 91 or higher research octane."

    That is with the 3.3 liter engine(Same as Lexus 330) and IMO a more advanced engine than in my 3.0 Jaguar. Now I don't need great performance to drive to the store or to work so I don't waste the money. On long trips (1500 miles) I have used premium particularly when traversing the mountains of Colorado and Utah.
  • The main reason why we should use premium gas is to prevent "knocking" in the combustion chamber of our engines. The premium gasoline has stronger resistance to this undesirable chemical reaction where the fuel/air mixture burns so hot and breaks down so quickly that it may be damaging to your engine. Namely, it may literally burn a hole in the top of the piston (I have seen such engines) or may cause the valves to warp and seat incorrectly or you may damage the catalytic converter due to the exhaust gases being too hot. Of course, in today's engines, it would take a lot of running under load and on cheap gasoline to cause such serious damage, but it may happen. Most new engines have anti-knocking sensors, which adjust the fuel/air mixture to prevent knocking and that's why you will see worse fuel economy with regular gas in engines, which require premium. Have you ever heard usually older cars move quickly from green light? You will hear the distinctive knocking from the engine, which indicates this phenomena. Each engine has a different compression ratio and optimum running temperature, not to mention ignition timing and valve opening curvature. The cars that do not need premium gas usually run lower compression ratios and may not be very spirited. Bottom line is this: if the manufacturer recommends premium, stick with premium. Think about it, if you put 12K miles per year and average 20mpg, it will cost you only about $120 more for premium vs. lowest grade of gas. Well worth it for the piece of mind, better performance, not to mention better fuel economy.
  • Hello, I am new to the forum and thinking about purchasing a 2004-2005 x-type sport. Does anyone know if you can tell whether the car has the sport package and/or premium package by the vin #? Thanks in advance.
  • I suspect your Jag engine is a bit more sophisticated than the Toyota 3.3. First of all, The Jag 3.0 makes 227 HP, compared to the Toyota 3.3 at 215. Secondly, the Jag engine is very high compression. Jag's 3 liter V6 makes more HP than the current BMW 3 liter in the 325i. My X-Type with the 2.5 Liter runs best and delivers its best fuel economy with 93 octane gas. If I use 92 or ethanol blended premium, my gas mileage drops about 4 -5 mpg. My daughter has 2 Toyota SUVs with v8s - both run ok on regular, but, get a little better fuel economy on premium.

  • desertguydesertguy Posts: 730
    Oldengineer: I will have to disagree with you and I'm no mechanic but I think the Highlander V6 is the more sophisticated engine. Currently it has 230 HP but more importantly, 242 ft.pds of torque. It is also a VVT-i engine (variable valve timing with intelligence) The compression ratio is 10.7 which is high.

    The cars are not comparable of course. I would much rather be driving my Jaguar. My point was the Toyota manual says 87 octane is OK but 91 or higher will get better performance. I suspect Jaguar could say the same if they wanted to.
  • I must say I am so very thrilled to finally have the opportunity to purchase a Jaguar. It's been a dream of mine since I was 18.

    I purchased this car 'Certified' with just over 40,000 miles. I have spent the last two days, driving it in all different environments to become acquainted with it's tendencies. I have a few questions for those of you who are familiar with the '02 X-type. I appreciate all of your information and advice.

    1. The steering column seems to make a humming/whining noise when turning hard to the either side. Is this a known issue with this model or something unique?

    2. It's an automatic, but there is a 2nd, 3rd, and 4th gear indicator on the left side of the shifting plate. The salesperson wasn't sure if this allowed for speed shifting between these gears while moving or whether they were static gear selection. This may come across as confusing but hopefully some of you understand and can provide insight. I would hate to use these gears as a pseudo manual shifting while moving if it wasn't designed for this purpose and may cause unnecessary transmission wear/tear.

    3. The stereo system console supports an embedded cellphone and CD Changer, neither of which were in the car when I purchased it. I have two basic questions. a> If I add the cell phone option can I use any cellphone service (i.e. Cingular, Spring, T-Mobil)? b> Can a 3rd party CD Changer be added in the trunk be supported by the Jaguar stereo system or must I Use Jaguar's CD changer?

    I appreciate any help you can provide. I love the car, and I'm simply trying to better understand my alternatives for these issues.

    Thank you,

  • Well it is one way. The forward direction button is working, although not one touch functionality. The reverse isn't working at all, therefore to close the roof, I need to keep the forward direction depressed and guess when the sunroof is completely closed. I have a 2002 2.5 X-type.
    It all happened after I accidently turned off the ignition whilst the sunroof was closing. I turned the engine on again when I realised my mistake and I've had my problem since.

    Is anyone aware of this problem and how to fix it?

    Many thanks
  • desertguydesertguy Posts: 730
    Try this procedure:

    Issue: Sunroof Motor Synchronization - Calibration:
    Please note: The 2002 MY X-Type sunroof motor/module doesn't have timing marks
    or gears to be aligned. In the event that a roof motor is inoperative, or if the
    roof panel is not closing or opening properly, the following Initializations
    procedure must be performed.

    Action: Press the switch to operate the roof panel to the fully tilt position.
    Release the switch. Press the switch again in the same direction, fully tilt and
    hold for 30 seconds or until the roof panel moves slightly. Release the switch
    and, within 5 seconds, press in the same direction and hold. The roof panel will
    travel automatically to the fully open position, then back to the fully closed
    position and then stop. Verify the operation of the anti-trap and one-touch

    Worked for me.
  • desertguydesertguy Posts: 730
    Rich: The shifter is known as a J-gate as you can see it is in the shape of the letter J which has been common to all auto Jags for many years. You can shift the car like a manual if you wish and many people do just for the fun of it.

    As for the phone; from what I have read, the Jag phone was a timeport Motorola and was rather dated, expensive, and did not allow for the use of other phones using the car's wiring. As for the CD changer, Jaguar uses a fiber optics system that is practically impossible to use ad-ons with. And to make matters worse, both the factory phone and changer are very expensive. Check around as maybe a third party supplier has come up with something. Or maybe Ebay.
  • I'm new to the forum. I found a 2005 X with all the options and only a few thousand miles. Had to buy it, I finally own a Jag. I'd like to ask about a few 3rd party upgrades. The grill should look like a jag grill, wire mesh. Has anyone replaced the front grill and can you suggest a 3rd party. Also, I love the exhaust sound, but only above 3,500 RPM.
    Below that it's anemic. Has anyone upgraded to a true bolt on system that adds beautiful sound to a beautiful car?
    Thanks for your input, see you on the road in Seattle. - Go Hawks. PS - The Seattle/Bellevue dealership rocks.
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