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Buick Rendevous Real World MPG

15 messages,  Last post on Feb 08, 2009 at 2:00 PM

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What is this discussion about? Buick Rendezvous, Fuel Efficiency (MPG), SUV

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#7 of 15 Re: what will be my most likely repair issues? [alvord] by veloce67 Jan 21, 2006 (5:52 pm)
Replying to: alvord (Nov 01, 2005 11:45 am) I have owned my 02 RDV AWD since new (09/01)and it is comfortable, yet somewhat enimic in power. I bought the extended GM service and it has paid for itself. Some issues have been electrical, but I have more questions about the level of service integrity of the dealer than the vehicle. I am on my third battery, and was told that the batteries from GM have a fault in the terminals, as they crack and leak. I have had intermittant problems since the first battery was replaced. I parked the car, and it wouldn't restart...no power at all..(alot of good OnStar was...no power to call for help!). The terminology used was the terminal was corroded, but it was actually broken and leaking. The battery was pro-rated, so I didn't pay the full price. At the time I thought the problem was just that simple. In several months, I started having electrical brown-outs, i.e. lights dimming while driving, or dimming when a load was applied to the electrical system, like the AC, or brake light switch. The radio "lost" some of it's recieving capabilities, stations local and regional aquired static (AM/FM). The dealer "fix" was resoldering the antenna connection to the glass windshield, but that didn't solve it, (They managed to scratch up the lens on the climate control screen in the process). When I took it back, they replaced the radio at no charge. The radio worked, but sometimes lost the memory settings,(You'd think this would be a clue to all that I'd said and had it in for). In four months, the 'no-start' issue happened again. They tell me the battery cable had come loose. Last month, I had 'no-start' problems again, but it would come-and-go. I found the battery loose in it's hold down, and the positive terminal wobbled. The dealer said there was no problem with the battery, just loose, retightened, but their diagnostics said that the ignition anti-theft module was bad. $200 warranty deductable cost to me. The next day, the 'no-start' condition was there, and the battery was loose. They replaced the battery and battery tray at no charge...but I suspect the ignition module is either not bad, or the current problems I've been having may have contributed to the problem, and am looking to have it tested,(any help here?). The last battery was 16 months old and had the same problem as the first two! Like most busy people, I have to loose time to chase the problem instead of having it fixed right the first time!
#8 of 15 2006 Buick Rendezvous mileage by dill Oct 25, 2006 (5:31 am)
I have calculated 26.7 miles a gallon for my 3.5 litre V6 Rendezvous engine a couple times. Average around town and highway driving I get about 20.5 miles a gallon. I have a FWD w/ traction control Rendezvous, WITHOUT the AWD weight many other Rendezvous suffer from.   I think under the circumstances I've been very pleased by the mileage considering it is a hair over 4000lbs. Replies to this message: Code (Feb 08, 2009 2:00 pm)
#10 of 15 Fuel Mileage Drops off bad? by huckabyl Dec 03, 2006 (9:59 am)
I have a 2004 Rendezvous, with no problems till I changed the air filter. Fuel Mileage went from 26 to 15 mpg. Put in a second filter in hopes of maybe a bad one with no improvement. Any ideas would be appreciated. Replies to this message: kenym (Dec 04, 2006 2:29 pm)
#11 of 15 Fuel Mileage Drops off bad? by dill Dec 03, 2006 (2:28 pm)
I think it might be something that happend as a coincidence with air filter replacement and poor mileage. It,(the air filter) should have improved mileage, not hurt it like you claim it has.   I'd get the Rendezvous down to the local Buick dealer and have them run a scan test diagnostic tool on it to check for any problems.
#12 of 15 Re: Fuel Mileage Drops off bad? [huckabyl] by kenym Dec 04, 2006 (2:29 pm)
Replying to: huckabyl (Dec 03, 2006 9:59 am) I live in North East Ohio and I believe they start using winter fuel additives around the end of October. My wife's 06 Corolla S was averaging 30+ since she bought it in May. However since the end of October her mileage has dropped to about 27 or 28 mpg. Nothing in her driving habits has changed. We still fill up at the same place. Still use 87 Octane and the car seems to run and idle the same. Just the difference in the mpg. I was told the reason for the winter fuel additives is to prevent fuel line freeze up. The gas itself wont freeze but the condensation in the lines could freeze and cause the car to stop running. I believe they remove the additives around the end of March or early April
#13 of 15 drinks faster than I do water by gman1957 Mar 25, 2007 (4:17 pm)
This vehicle is like having gas station near by all times.You never know hom much more you need to go before filling up again.It burns so much gas. I cried everytime I have to goto fillit up,cause I know in a few days I'll be back the station.I wish the car will just burn up and collect on the insurance and get a new vehicle.
#14 of 15 Buick Rendezvous - 27.3 MPG !!! by motobaz Jul 06, 2008 (3:46 pm)
2003 CX V6, 72K on the clock. We were averaging 27.3 mpg on Interstate 5 from Sacramento heading south, full load, kids dogs and luggage, AC on all the time. I set the cruise at 65. Got home to San Luis Obispo and did some town driving and still averaged out at 25 mpg for the tank. We have the Driver Info Feature which tells you your average mpg on the dash display, a nice feature. That's pretty decent for an SUV. Makes me wonder when I see some of these ads for some of the latest cars and they're bragging about getting 28 mpg.
#15 of 15 Re: 2006 Buick Rendezvous mileage [dill] by Code Feb 08, 2009 (2:00 pm)
Replying to: dill (Oct 25, 2006 5:31 am) What is meant by FWD w/traction control?

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