Last post on Sep 11, 2013 at 4:08 PM
You are in the Buick Lucerne
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Buick Lucerne, Fuel Efficiency (MPG), Sedan
#85 of 106 Combined highway/city driving - 23 mpg
Jul 27, 2008 (3:52 am)
My commute to work is 40 miles each way. 35 minutes at 75mph and 45 minutes at 15mph stop and go DC beltway traffic. The driver information center indicates a consistent 23 mpg. I have the CXL V6; the car has 40K miles on it now. I don't think this is that bad for such a large car and this type of driving. I'm not happy about the price of gas but I'm not ready to trade my comfy Buick for an econobox.
Jul 27, 2008 (11:39 am)
I agree 100%. We toyed with getting a Vibe for a while before opting to go 180 degrees and get the full size Lucerne. No regrets whatsoever. For the couple miles per gallon you might gain on the small car it's just not worth the tradeoff of room and comfort, not to mention safety. We have gotten a steady 26.5mpg average ... winnter/summer/city/highway. I'm puzzled after reading about others who aren't getting nearly as good of mileage as we are, can't figure that out.
#87 of 106 Re: Lets do a Lucerne Experiment [kcwolfpack59]
Jul 31, 2008 (5:26 am)
I really haven't noticed whether there is a hesitation on start up, but I'll check. I was on my way to an appointment yesterday and I needed to pass a slow truck....My Lucerne almost got me killed! It hardly had enough power to get around the truck and I had the pedal to the metal....I test drove a Ford Fusion yesterday, it has a great sporty look, comfortable seats, power, and gas mileage. I have owned 2 Fords with great performance, I may just trade.
#88 of 106 Re: Lets do a Lucerne Experiment [taralee]
Jul 31, 2008 (7:51 pm)
Taralee, you might have something wrong with yours. My V-6 has plenty of power and torque to get me out of danger. It seems to have more than the Lesabre it replaced. The power of this car exceeds my nerve. The dead spot in the gas pedal is barely noticeable when you are on a highway and are on slight inclines and trying to hold a steady speed without using the cruise control.
#89 of 106 Re: Lets do a Lucerne Experiment [kcwolfpack59]
Aug 02, 2008 (1:30 pm)
I agree with you totally. There is something wrong, but the dealership and Buick won't address it because they can't prove it by hooking it up to the diagnostic computer and finding a CODE for the problem....It won't code.
Aug 02, 2008 (4:55 pm)
What I would try is taking the car out on a lonely road and driving it in 1st and seeing if it has a lot of power when you step on it at slow speeds--say 20. Then try in 2nd and floor it at 35 or 40 in that gear. Then driving in 3rd at 50 and floor it quickly. Then floor it slowly after the car is cruising in 3rd and the torque convert clutch is locked up.
Then leave the car in OD and try flooring at different speeds and see what gear it shifts down into and how the power feels at different speeds. All I can figure is the transmission didn't do a full downshift to the lowest gear for full power when you accelerated to pass the truck because you may have pushed down slowly on the pedal and it didn't perceive that a request for lots of power was being made. I'm picturing you going at 45 or 50 and attempting a pass, right?
Be clear that I'm not blaming you for not doing something the way the car wanted. I'm trying to help you figure out what the car wants. There have been lots of posts on a Toyota discussion about quirky communication between transmissions and software and engines in certain cars. I have my 3rd leSabre with the 3800 and can't imagine not having enough power to pass. It's not a 455 cu. in. V8 engine like used to be available but it surprises me occasionally when I punch it with the downshifts and the power it comes up with because I usually drive it very, very tamely. I'm not going to pass semi trucks on 2 lane roads at 65 mph with an oncoming car 1/2 mile away as I start to pull out, but it provides more than enough power for me.
Good luck getting it straightened out.
#91 of 106 Re: Diagnostic [imidazol97]
Aug 04, 2008 (6:05 am)
Thank you for your help. I will get my hubby to ride with me and do what you suggested and post my findings.
#92 of 106 Re: Diagnostic [taralee]
Aug 08, 2008 (7:45 am)
Can anyone tell me if there is or should be any significant difference in mileage with the traction control on/off? My 07 CXL doesn't come close to my 02 LeSabre - same engine.
#93 of 106 Re: Diagnostic [pdg5710]
Aug 09, 2008 (9:48 am)
I've never switched the traction control off in my '06 CX so I really couldn't say ... but I'm getting excellent mileage as it is anyway. 30+ on the highway, 26 overall city/highway/winter/summer. The variation in mileage that people are reporting is a mystery to me. My Lucerne gets better mileage than my '01 Malibu with a 3.1L V-6. Go figure.
#94 of 106 07 Lucerne CXL MPG
Sep 08, 2008 (6:15 pm)
Our 07 Lucerne CXL has just over 8,000 miles on it, and we finally took it on a road trip this past weekend. We traveled 668 miles that were mostly interstate and rural highway. The DIC indicated 27.1 MPG, but my calculated MPG was 28.3. I carefully topped off the tank before, during, and after our trip, so I think that my calculated 28.3 is more accurate.
My wife drives our Lucerne 3 miles to work. With the daily short trips in the city, our mileage is 17 - 18.