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Ford Crown Victoria/Mercury Grand Marquis: Real World MPG

43 messages,  Last post on Apr 20, 2009 at 3:19 PM

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What is this discussion about? Ford Crown Victoria, Mercury Grand Marquis, Fuel Efficiency (MPG), Sedan

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#14 of 43 help me with my 99 cv pi by serge99pi Feb 09, 2007 (8:09 am)
: i bought 99 cv pi 2 weeks ago for my wife 138000 miles i am cab driver my 99 pi has 350000 miles so i know how good they are,next day check engine is on and it keeps dying out like it is running out of gas,so i change air idle valve,plugs,thermostat,belt it was ok for 2 days then again same thing it takes full tank for 200 miles very bad,it is very cold in chicago but the car looks mint i bought it from priest i am so upset i cant sleep at night,this mourning it kept dying out like it was running out of gas then i drove it still cold then it was ok someone please give me advice on what to do sergetaxiyahoo.com or call 847 757-1271 cell THANK YOU
#15 of 43 $0.02 by studbutter Mar 03, 2007 (12:24 pm)
My '84 Crown Vic usually gets 19-20mpg in the summer, and it drops to around 17 in the winter. I run 10w-30 in it year-round, and try to keep the tire pressures at 32-35. I'm pretty sure they reformulate the gas around here for winter/summer, with some "oxygenators" (like MTBE) in it for the winter gas. My wife's '99 Volvo loses 3mpg or so in the winter as well.   My used oil analysis consists of "yup, it's used."
#16 of 43 2004 Merc Grand Marquis by fordenvy Mar 20, 2007 (7:27 pm)
10/18/2005-3/19/2007 FUEL ECONOMY AVG - 22.45 HIGH - 28.71 LOW - 17.74 PRICE AVG - $2.555 HIGH - $3.059 LOW - $1.999   So if we are paying $2.50 for gas currently, just think you've been paying that much all along on average.
#17 of 43 1999 Grand Marquis - Problems? Average Gas Mileage? by oceanwalker Apr 03, 2007 (12:03 pm)
Can anyone tell me what the typical gas mileage is for our 1999 Grand Marquis? We drive it locally and don't seem to be getting great mileage. Also, anyone had any problems with a 99 model? Please let us know asap. Thanks! Replies to this message: euphonium (Apr 04, 2007 11:16 am)
#18 of 43 Re: 1999 Grand Marquis - Problems? Average Gas Mileage? [oceanwalker] by euphonium Apr 04, 2007 (11:16 am)
Replying to: oceanwalker (Apr 03, 2007 12:03 pm) Don't have a Lead foot driving with Unleaded gas.   We have two Ford products - each with same engine (4.6) and AOD transmission. '94 Towncar and '95 Thunderbird   Town Car 70 MPH gets 23.0 Thunderbird 70 MPH = 26.0   City driving gets 17 on each.   Mileage can be improved by using synthetic oil, 35 psi of air in the tires, clean air filter, and clean mass air sensor. There are a lot of variables to gas mileage.
#19 of 43 2007 Gas Mileage by browney May 25, 2007 (1:24 pm)
I am the proud owner of a new 2007 GM Model GS in Driftwood Gray. My first fill up yielded 21.9MPG. This was based on 50% highway driving at no more than 70MPH. The other 50% was on 40MPH suburban roads with a medium amount of traffic lights. I do not have a lead foot and pretty much drive the speed limits. Replies to this message: rsmith8 (Jul 11, 2007 7:13 am) euphonium (Jul 11, 2007 10:03 am) rsmith8 (Jul 12, 2007 2:02 am) and 1 more... browney (Jul 23, 2007 8:33 am) euphonium (Jul 23, 2007 11:58 am)
#20 of 43 Re: 2007 Gas Mileage [browney] by rsmith8 Jul 11, 2007 (7:13 am)
Replying to: browney (May 25, 2007 1:24 pm) Last week I rented a practically new 2007 Marquis LS while on vacation in Canada and drove it about 700-800 miles in the Canadian Rockies from Calgary and north of Banff/Lake Louise. The original window sticker was in the glove box and showed an estimated highway MPG of 32 and stated the vehicle was NOT to be exported to the US. What, if anything, is different about Canadian versions of the Marquis? I thought this was unbelievable but changed the computer settings to English and at least according to the onboard computer, I was getting better than 29 mpg using cruise control on the highway and maintaining about 70 mph. The mpg would drop considerably when in town, but showed overall mpg of 21+. I did note the gas pumps indicate that ethenol was NOT in the regular fuel grade which I used. I was surprised to see that the US EPA highway estimate is so much lower than what was on this vehicle's window sticker. Replies to this message: euphonium (Jul 11, 2007 10:03 am) rsmith8 (Jul 12, 2007 2:02 am) euphonium (Jul 18, 2007 8:37 am)
#21 of 43 Re: 2007 Gas Mileage [rsmith8] by euphonium Jul 11, 2007 (10:03 am)
Replying to: rsmith8 (Jul 11, 2007 7:13 am) Every time we go to Whistler I have to remember that to get Yankee MPG I have to multiply 1 liter X 3.785 to get an American gallon. 100 km = 60 miles.   We're leaving for Blackcomb Friday & will fill up just this side of the border.   I envy your having been in the Canadian Rockies & hope you were able to visit Jasper and the surrounding area.   I don't know the differences between our Marquie and theirs, but would not be suprised to learn the CA engine is not the 239hp, but perhaps the 210 and maybe even geared higher. How was the acceleration? Replies to this message: rsmith8 (Jul 12, 2007 2:02 am) euphonium (Jul 18, 2007 8:37 am)
#22 of 43 Re: 2007 Gas Mileage [euphonium] by rsmith8 Jul 12, 2007 (2:02 am)
Replying to: euphonium (Jul 11, 2007 10:03 am) I wish I had paid closer attention to the window sticker regarding engine specifications, but I just assumed it was the same as in the US. Gasoline was expensive compared to US. I paid $1.08/liter in Banff but found a 7/11 in Calgary with regular at $1.03/liter before returning the car to Hertz at the airport. The acceleration was adequate for such a big car. Someone else told me the higher altitude was a help regarding the mpg results. While we did not go all the way to Jasper, we did drive from Banff to the Columbia icefields but were staying in Banff so returned to Banff that same afternoon. While this route is in the Canadian Rockies, the highway is very good and the inclines were gradual enough that the transmission rarely forced a downshift climbing a grade even with cruise set at 70 mph (speed limit was 110 kph and there were some RCMP patols shooting radar between Banff and Calgary). Replies to this message: euphonium (Jul 18, 2007 8:37 am)
#23 of 43 Canadian gas mileage by theronrohr Jul 18, 2007 (12:13 am)
Canadian's use imperial gallons which are a little bigger than US gallons. So you have to compensate for that. Both the window sticker and the computer must be using imperial gallons to calculate mileage.

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