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Sedans Chevrolet Impala Chevrolet Impala Real World MPG
117 messages, Last post on Apr 15, 2009 at 11:28 AM
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Replying to: nosirrahg (Jul 01, 2006 11:31 am) Quig. |
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On straight highway driving I get 32 + a tenth or two, and 26 in town averaging about 28. I wanted to downsize from the minivan due to the gas prices (and with the middle east thing getting shakier again, it will go up some more.) Going 70 mpg drops it down to 28mpg. I am pleased with the mileage--after reading so many posts in edmunds, I was beginning to think that nothing but Toyotas and Hondas could get good gas mileage. I was brought up in a junk yard in Iowa, and learned to prefer Chevys, and I still do; they have usually served me VERY well over the years. This one is white with lots of pinks stripes and decals, so if you ever see one like that, please wave, as there probably aren't many out there with that color combo. zmartha 
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Replying to: zizith (Jul 13, 2006 3:01 pm) Thank you Quig |
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Replying to: zizith (Jul 13, 2006 3:01 pm) I have a new SS which has less than 1,700 miles on the odometer and am currently getting 31-32 miles per US gallon at a steady 60 mph on the highway. In the city the mileage is 17-18 mpg. These numbers are exactly in line or better than EPA estimates. The car is simply great and I could not be happier with it! |
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Replying to: priggly (Jul 13, 2006 10:50 pm) Toyota's and Honda's get low to mid 30's going 70, 75!
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Replying to: timothyaw (Jul 14, 2006 5:19 am) Yeah, and it only takes them twice as long to get up to that speed. 
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Replying to: quietpro (Jun 23, 2006 6:03 pm) Take car "A", gets 30mph on the highway, like the Impala. That means about 2 gallons per hour burned. Now that is at about 3 times the RPM of simply idling. So one hour of idling would consume 2/3 gallon of gas IF the engine load was similar. Which it isn't - even if the AC is on the engine has it easy just idling compared to going down the highway. So my (admittedly rough) guess would be about 1/2 gallon of gas per hour of idling. Maybe I'm missing some other factor that someone will point out, but I think RPMs and engine load (which affects fuel injector duty cycles) pretty much sums up gas usage. |
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I have been making myself crazy trying to figure out what kind of car to buy. Currently I have a Cadillac DTS and with my 90% in city driving i get between 10 & 12 mpg. I have been toying with the SS because of the cylinder shut down in stop and go traffic, but i can't seem to get a real handle on how substantial my mileage will increase over my caddy. HELP!!!....
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Replying to: giltrdn (Aug 26, 2006 1:25 pm)
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Just figured I add to the discussion since I own 2 Impalas. My 2002 LS with a 3.8 does 30 - 32 MPG on the Highway even at 75 MPH and with the A/C on. It has been this way since the break in mileage, to now with 67,000 on it. I get around 25 to 27 city and highway. I use 89 octane, it is dog with 87! Compare that to the 2006 LT3 with the 3.9 which I now have 7,000 miles on. It does 27 MPG on the highway and 22 to 24 city and highway. Same speeds, same octane, same conditions. Even though there is not a big difference in engine displacement, I attribute this big difference and decrease in MPG for the 2006 to the way the transmission is set up for shifting. The 2006 shifts down at relatively slower speeds than the 2002. If I want the 2002 to down shift I have to put a decent amount of pressure on the pedal, where it takes only slight pressure for the 2006 to down shift. Fact is that the 2006 is going to down shift whether I like it or not, where as the 2002 I can regulate better with my foot. Fact is, I like the way the 2002 shifts compared to the 2006. Also, the transaxle gearing (or what was known as the rear end in the rear wheel drive cars) is different on the 2006. The 2002 is at about 2,000 RPM at 65 - 72 MPH where the 2006 is at about 2,300 RPM at the same speed. Maybe with the new 3.9 engine they had to use different shift points and gear it differently? Any comments are welcome.
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