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Sedans Buick Lucerne Buick Lucerne: Real World MPG
104 messages, Last post on Apr 11, 2009 at 8:01 PM
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Replying to: buddiemac (Jun 23, 2008 8:18 am) |
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As stated previously, on three trips to Chicago we got 29.5 to 30.5 (average 30 mpg) driving at 72 mph. My wife tends to drive faster (closer to 75). We do not "baby" the car, but we definitely do not do jackrabbit starts. We only accelerate fast on ramps and when passing trucks. Also, we don't live in town. We live a mile from a small town and 10 miles from weekly shopping. Those trips are mostly 55 mph. We did NOT buy a big car for the mpg. We bought a big car for comfort on the freeway. We have that, along with reasonable economy on shopping trips. I wonder if our car is significantly better than the Lucernes that many of you are driving. I think not. I expect it is your driving habits. Also, I am sure that commuting in heavy traffic is a real mpg disadvantage. We do none of that.
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Replying to: scandiaken (Jul 01, 2008 12:26 pm) |
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Check your tire pressures. Use a correct gauge and put them 2-3 pounds above the recommendation on the door post. Buy only good fuel. Put in a tank of top grade Shell or BP or another solid brand. Then put in a tank of Plus grade. Then check your mileage. But first check the idling. Check the quick starts. Check the heavy throttle. I'll bet I can take your car, make sure it doesn't have fuel with a lot of alcohol in it, run a bottle of Techron fuel system cleaner through it, then leave on a 300 mile trip and get 31-33 mpg driving at 65-70 on the interstate. If you believe the car is the problem, I'd suggest trading it for a 6 cyl Camry and report back the mileage after a few months. |
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I reported earlier that highway mileage on a V-6 2007 Lucerne was 4-5 mpg less than the 2000 Lesabre Limited that we traded off for it. We were getting 25-26 in the Lucerne highway average, with easy interstate driving about 70 mph. I inflated the tires to 32-33 lbs., put in some Techron and tried synthetic Castrol as taralee (I think) suggested. Now it is 26-28 mpg, which is nowhere near the 31-32 we were getting in the Lesabre on the same roads. Our 1992 Olds 98 got the same mileage as the Lesabre did. All three cars have the same engine and transmission. I will give up one mpg less because of our Missouri state mandated 10% ethanol requirement that started a few months after we bought the Lucerne. I also realize the Lucerne in 100-150 pounds heavier than the older cars. I agree with taralee. Some V-6 get significantly different mileage than others. Other than that, I am crazy about this car and highly recommend it. A slight fuel milege penalty is worth it.
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| two weeks ago i drove from Queens to Eastern L. I. for work, trip was 64 miles each way, on the way east i turned off traction control, set the speed to 61 mph and got 34.5 mpg. On the way back west same speed 61mph, traction control enabled and got 35.5 mpg. I have a 06 Lucerne with 11,000 miles on it and I have 35psi on each tire | |
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Replying to: kcwolfpack59 (Jul 03, 2008 11:08 am)
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Some of us here are having mileage problems with our Lucernes and have since the first day we brought them home....Some of us have been getting excellent mileage from the git go. I have been informed that the dealership that I do business with has a few Lucernes out of hundreds that they have sold, that are having mileage problems that they cannot resolve. They have opened service orders on each one with Buick and checked all possible parts like injectors, fuel pump, throttle body, etc....They (the technicians) took trips over 100 miles with the cars and used premium fuels, they couldn't improve the mileage. Buick gave them a list of things to check, but none solved the problem. They had mine for 3 weeks with no resolve. I used to work in service at a dealership and I had a great Idea.... WHAT IF, it was a certain year, or a certain engine, or a certain assembly line that these lemon Lucernes are coming out of that are having these problems? I compared my VIN number with a friend of ours Lucerne at our dealership, it has the same 6 cyl engine, same year model, but different interior package. Mine is the luxury package with Gold Flash white paint, power leather seats and Onstar. Hers is the standard package with standard white paint, fabric seats, with no Onstar. She is getting 28-32 mpg, I am getting anywhere from 19-23.....HUGE DIFFERENCE! We need to have Buick do a random VIN comparison between the Lucernes having these problems, and the ones that are not. If you know someone who owns a Lucerne that is getting great mileage, go to the dealership and have them compare your VIN information to theirs and note the differences. There could be a unmistakable pattern here!
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Replying to: imidazol97 (Jul 03, 2008 6:38 pm) |
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Replying to: taralee (Jul 06, 2008 4:52 am)
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