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Suzuki XL-7 Real World MPG

13 messages,  Last post on Nov 25, 2009 at 7:59 AM

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What is this discussion about? Suzuki XL-7, Fuel Efficiency (MPG), SUV

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#8 of 13 Re: Suzuki XL-7 Real World MPG [steve_] by slinky1 Mar 10, 2008 (7:14 am)
Replying to: steve_ (Jun 17, 2007 1:02 pm) after about 8000 miles on my 2007 AWD xl7, i am averaging about 18-19 mpg , 50% hwy, 50% city driving, and i can be a bit of a lead foot!!. Replies to this message: dave42ny (May 07, 2008 5:10 pm)
#9 of 13 Re: Suzuki XL-7 Real World MPG [slinky1] by dave42ny May 07, 2008 (5:10 pm)
Replying to: slinky1 (Mar 10, 2008 7:14 am) Update... I currently have 14,650 miles on my 2007 XL7. During the winter months I was averaging 19.3 to 20.1 MPG (70% hwy, 30% city/local driving). I did another Mobil 1 5W-30 oil and filter change about 1,000 miles ago and I'm averaging 21.2 MPG. I do my oil and filter changes every 6K - I put on 2K a month.
#10 of 13 AC hurts mpg by kbrown1999 Jun 28, 2008 (4:26 pm)
My wife says she gets 50 miles less to the tank with the air on. I have to have the belt replaced on it, but that shouldn't affect it.Thinking about changing to high performance spark plugs. Great vehicle. Has 104 k and drives like the day we bought it, no squeaks, runs great.
#11 of 13 Horrible fuel economy by dacomstock Sep 14, 2008 (6:36 am)
I wish I could get the type of fuel economy that everyone else is listing. I have a 2007 XL-7, 7 passenger AWD with less than 13,000 miles on it. Since new I have never experienced any better than 13 city and 16 highway. It has most recently dropped to 12 city and 14 highway. We were told initially that the car had to be driven and as the miles accumulated the fuel economy would improve. Conversely, the economy has only suffered as has my wallet. Although I can't say for certain that others have had this problem, I have noticed that there are no less than 8 used 2007 XL-7's on the dealer's lot as I write this. I love the vehicle as it is comfortable, rides well and has plenty of power, but the dismal fuel economy numbers may prevent me from leasing a second one.
#12 of 13 Fuel Eco by tech7 Nov 14, 2009 (6:38 am)
I purchase a 2008 from a local dealer with 5000 miles XL-7 I have change the oil every 2,500 miles due to the black oil. I use a good quality oil Pen Oil . I was a engine rebuilder for 10 years and have noticed that cars or suv's that get low gas milage get the oil dirty quicker. Most of the time is is due to the fact of to much fuel entering the cyc which shorten the life of the engine and cost a arm and a leg in fuel. I was wondering if anyone has heard about a chip change for the computer in this suv or can I change one of the parimeter in the computer to adjust fuel .   Ray Replies to this message: suzuki_az (Nov 25, 2009 7:59 am)
#13 of 13 Re: Fuel Eco [tech7] by suzuki_az Nov 25, 2009 (7:59 am)
Replying to: tech7 (Nov 14, 2009 6:38 am) I've found that Pennzoil gums up in the Suzuki engines at about 2500 miles, especially during the summer, or when driven hard with higher engine temps. Pennzoil has a higher wax content than other oils which makes it smoother when fresh, but causes more sludge over time especially in engines that have hot spots within them. I've had my best gas mileage with Formula Shell conventional oil, or any fully synthetic oil such as Walmarts own brand.   The other thing that increased my gas mileage and stopped rattles was to change the oil in the transfer case and the front and rear differential. Most new owners don't change that at 3000-5000 miles but it's strongly recommended so that you can get rid of the metal shavings as the parts wear in. I did it myself and it wasn't hard.

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