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Chevrolet Impala Real World MPG

117 messages,  Last post on Apr 15, 2009 at 11:28 AM

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What is this discussion about? Chevrolet Impala, Fuel Efficiency (MPG), Sedan

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#48 of 117 Re: Impala SS Gas Mileage [bxd] by mike186 Feb 20, 2007 (12:52 pm)
Replying to: bxd (Feb 20, 2007 10:25 am) My average commute speed is approx. 60 mph. There are two stops through smaller towns. My Grand Prix is the normally aspirated 3800 V6 with 200 HP. My average MPG in the city ranges 12-17 and approx. 21-23 on the highway (approx. 65 MPH).   I realize the new Impala SS has an EPA of 18 and 27. Just wondering how realistic this is. My driving is fairly steady at optimal mpg levels. At the very least, given the above information, I don't want to backslide for a mileage perspective if I purchase the SS.   Any comments are appreciated. Replies to this message: nosirrahg (Feb 20, 2007 1:33 pm) quietpro (Feb 20, 2007 3:18 pm) bobber1 (May 24, 2007 7:44 pm)
#49 of 117 Re: Impala SS Gas Mileage [mike186] by nosirrahg Feb 20, 2007 (1:33 pm)
Replying to: mike186 (Feb 20, 2007 12:52 pm) FWIW as I'm considering replacements for my 2000 Impala w/3.8l, I played around in Excel and took the EPA MPG figures for the car (which I think were 20 city/30 highway) and adjusted the percentage of each until it equaled my overall average in the car - which was somewhere around 22.5 MPG, and meant 60% city driving and 40% highway. I can then plug in the city/highway figures of other cars at the same ratios, and figure I get a pretty accurate depiction of what a new car would deliver, based on the way I drive.   You can also do this at www.fueleconomy.gov...find your car and do a comparison with others; there's a small-print link that allows you to adjust the % of city/highway driving to get an apples-to-apples comparison. In my case I'm averaging 23 MPG, and the 2007 Impalas would deliver 24 w/3.5, 23 w/3.9, and 21 w/5.3 (indicating the 3.9 should be comparable to the 3.8).
#50 of 117 Re: Impala SS Gas Mileage [mike186] by quietpro Feb 20, 2007 (3:18 pm)
Replying to: mike186 (Feb 20, 2007 12:52 pm) Here's the best I can offer. I used to own an '02 Monte Carlo SS with the 3800. With it, my daily commute would get me 18-20mpg. Some days it was an easy commute with just a few stops and 55-60 mph. Other days, a lot of stop and go and maybe 45 mph max.   I now own on '06 Impala SS and get between 16-18 mpg on the same commute. So, for your commute, it would be safe to say you'd get about 2 mpg less with the SS than you are with your GP.   Highway mileage was pretty similar. I got 26 mpg consistently at 75 to 80. With the SS, about 24 mpg.   Hopefully this helps you. BTW, the SS can run on premium or regular but I've noticed no difference in mileage with either fuel. Replies to this message: bobber1 (May 24, 2007 7:44 pm)
#51 of 117 Re: Impala SS Gas Mileage [quietpro] by bobber1 May 24, 2007 (7:44 pm)
Replying to: quietpro (Feb 20, 2007 3:18 pm) My 2002 with the 3800 now has 147,000 miles on it. It averages about 26 mpg per year on 75% highway and 25% town driving. It will get close to 30 mpg on road trips and 22 to 23 in town. Great car with almost no repairs and it still doesn't burn any oil and original brakes.   I'm looking at getting a new Impala this fall. I've driven both the 3.5 and 3.9 engine and the 3.9 wins easily in the fun to drive category but I am just a bit concerned about the mileage. I want the stability control system and it looks like the only way I'll get it is with the 3.9 engine.
#52 of 117 Gas mileage by 02cavalier May 25, 2007 (1:59 pm)
I have checked my mileage several times now since I got my new (to me) 2004 Impala and it averages 28 combined going to and from work. Best ever was 34 on a trip w/all highway driving and worst was 23 with all city and some idling. Must say I am very impressed.
#53 of 117 3.4 engine by 02cavalier May 25, 2007 (2:00 pm)
BTW my Impala has the 3.4 engine.
#54 of 117 So far I'm impressed by kmauss Jun 05, 2007 (5:39 pm)
Have had my 07 Impala about a week. It's the 3.5L. At this point, in heavy stop and go traffic with the AC running at least half the time, I am still averaging a little over 25 mpg. I'm sure if I were able to drive highway most of the time, it would get over 30. In a few weeks, I'm taking it on a weekend trip that will be mostly highway driving - I'll make sure to see what it's doing then.
#55 of 117 Re: 3000 miles & mileage is getting better [priggly] by teresabutler89 Jun 06, 2007 (1:44 pm)
Replying to: priggly (Jul 13, 2006 10:50 pm) You have a Impala SS?You say your getting 31-32 MPG HwY? What engine does it have in it. the 5.3L? IT's a 06? Who , if that's the case then, why is mine which is a 07 SS only getting 20.5 mpg hwy? Replies to this message: quietpro (Jun 06, 2007 6:44 pm) nosirrahg (Jun 06, 2007 7:24 pm) priggly (Jun 14, 2007 3:42 pm)
#56 of 117 Re: 3000 miles & mileage is getting better [teresabutler89] by quietpro Jun 06, 2007 (6:44 pm)
Replying to: teresabutler89 (Jun 06, 2007 1:44 pm) Must be driving downhill, both ways. Replies to this message: nosirrahg (Jun 06, 2007 7:24 pm)
#57 of 117 Re: 3000 miles & mileage is getting better [quietpro] by nosirrahg Jun 06, 2007 (7:24 pm)
Replying to: quietpro (Jun 06, 2007 6:44 pm) My guess is they're talking readout on the DIC while briefly cruising at 60 MPH on the Interstate, not an average on a complete tank.

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