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Chevrolet Cobalt Real World MPG



  • jaxs1jaxs1 Posts: 2,697
    Oh please. It is not dangerous or "extremely dangerous" to drive the speed limit. It's not like driving 30 mph or being stopped in the road. Traffic does not flow all at one synchronized speed like the Blue Angels in flight or something and everyone deals with it.
    Do you really believe that people are going to rear-end you while you are going 65 MPH in the slow lane or one of the middle lanes? Technically, even in the fast lane if that's the speed limit, but as a concession it's better to just stay out of that lane and let others pass on your left.

    People just want an excuse/rationalization/justification to speed and to put the blame others for it. "It's not my fault. I felt pressured to drive 80 because that's how fast everyone else drives."

    Just take responsibility that you want to drive fast and pay the gas and tickets and higher insurance and not complain about it if you get caught and ticketed or hydroplane on slick roads in the rain because your driving priority is to always drive as fast as the flow of traffic regardless of speed limits or road conditions.
  • grosloupgrosloup Posts: 239
    Let me tell you (jaxs1) what happened on the 28 of august 1999. I was driving in the right lane with my little family at about 67 mph. leaving the left lane free for "The Blue Angels" because YES the traffic was on a synchronized speed assuming at a speed of 80 mph. (maybe more) but REALLY SYNCHRONIZED I got rear-ended by a car following me to close and changing lanes because I was a slow driver at 67 mph? First thing you knew my vehicule was going sideways (same as a P.I.T. maneuver), I rolled over, slid on the roof and went in the ditch. The result.... my 3 year old son died instantly that day in my arms, today my wife is paralyzed and I got my left leg amputated. ask me if I really believe that people could get rear-ended while going 65 mph. in the slow lane? I really don't know what to tell you. I'm letting you figure it out.
    From that day on I'm always asking myself. That day, If I would had follow the flow at a Blue Angel Synchronized Speed would I still have my son, would my wife still be walking and dancing and could I still play baseball or kick a football?
    That's why I still say that it's EXTREMELY DANGEROUS to drive the speed limit if you're in a fast moving traffic.
    On that day my entire life capsized because I was following the speed limit. Go figure!
  • jaxs1jaxs1 Posts: 2,697
    So in that scenario, you would place the fault with the person driving 67 straight in one lane rather than with the reckless driver who can't change lanes properly?
    Even if you are driving "with the flow," there is still always someone who wants to go faster and will cut around other people to pass. Then what? Always drive faster than the fastest person behind you?
  • grosloupgrosloup Posts: 239
    Your right, I was hit by a reckless driver who couldn't change lane properly, but since that day I'm still blaming myself for what happened. It's hard to accept. I was thinking of suicide after the accident, doctors said I was on a Post Traumatic Stress but then I realized that my wife needed me more than anything else in this world. It was hard to overcome this and still today almost 8 years I still think about that day because my son is gone for ever and I'll never be able to have any children). If people drive faster than the fastest person behind you. Were and how will it end. Driving is supposed to be a pleasant thing not stressfull. People are driving faster and faster every day. Why?
    Thank's jaxs1 it made me feel good just talking about it with you cause you understand. Take care.
  • ray_h1ray_h1 Posts: 1,134
    Arguing that excesive speed is necessary, "because everyone else is doing it so I'm justified doing so to avoid causing an accident is as bogus as Hitler's justification for annexing Austria. You're not at all part of any solution; you're a willing part of the problem.
  • grosloup, your story is tragic and you have my deepest deepest sympathies.....I do agree with you, going with the flow of traffic is probably best......going 80mph doesn't help fuel economy, however. My 2.2L Cobalt gets 37mpg at 65mph, but considerably less at 80mph. Best fuel economy is obtained at 60mph, which is, as you've suggested, often dangerous to maintain.
  • does anyone know of any websites or online stores where i can find some LED tail lamps for me 2006 cobalt LS 4 door.....
  • Bought my 2005 LS Coup 5-speed for $15K in June 2005. It now has 18.5K miles on it - it's my commuter car. I drive 52+ miles per day; some open highway, some stop & go city. Have NEVER gotten more than 28MPG! I've tried shifting with the in-dash shift light, which makes me feel like I'm driving with my grandma, and have abused it as well, it makes little difference. I know living 90 miles north of Philly, our fuel is full of additives, but it can't cause me to get 5 MPG less than everyone else is espousing on this forum. (We check the tire pressure and adjust once month.) For a light, peppy 5-speed, I'm not impressed. :confuse:
  • What kind of airfilter do you have in your car?I have a SS Supercharger 2007 and I put a cold air intake kit on my cobalt with a K&N air filter,I gianed about 5 miles to a gallon more.If you dont want to spend the money for the whole kit you can just get the filter this will help.Also what octane gas do you us? If I put regular gas in my car I will also go to the part store and buy some octane boost this will also help. Let me know if you try any of these and if it helped your car.As for the shift light my car does NOT have one.
  • smogdungsmogdung Posts: 349
    I've put almost 70,000 miles on my 2.2L ecotec 5 speed 2003 Alero, it has smuck 60 series 15s, keep em at 32-35 psi. Have ave just a tick over 30 mpg. Not bad probably weighs a little more than a Cobalt. Wife's 2006 2.4L ecotec automatic HHR (50 series 17s) ave about 26 mpg over period of 14K miles so far. It weighs about 3,150 lbs. The 2.4L recommends premium, but runs just fine on 87 octane.
  • jhknightjhknight Posts: 46
    Hey! Last I checked the automobile has been around with basically the same internal combustion engine for somewhere around 100 years!? And last I looked at the calendar it is the 21st century? I must therefore conclude that the only reason we are still stuck at a "good" 30 mpg after 100 years of same old technology that perhaps someone high up wants it that way?? Is that why a 2007 car gets WORSE mileage than it's predecesors?? I want a PRIUS !! At least it's a start in the right direction!!
  • exzur2071exzur2071 Posts: 43
    The computer registered 27.7 mpg breaking-in my new Cobalt SS supercharged the first 611 miles.
  • steve333steve333 Posts: 201
    I have a 2006 Automatic LT Sedan. When I first bought the car certified used I was getting 26.5MPG mixed driving. Now it just dropped below 25MPG :(
    I have never gotten anywhere near 30MPG even on the Freeway.
  • exzur2071exzur2071 Posts: 43
    Last Friday I drove my Cobalt SS Supercharged from Grand Island, NY to Brooklyn, NY. The odometer shows 431 miles. Computer displays 32.1 mpg. Coming back yeaterday, the distance is also 431 but mpg drops to 30.8

    Traveling the same route with my 2005 Corvette, the odometer shows 420 miles. My third car, a 2001 Pontiac Aztek on the same highways and byways, the mileage on the odometer is 421.

    The mileage shown on the Cobalt SS Supercharged is 10 to 11 miles more than the other two cars.

    The three cars has the original wheel and tire sizes.
  • I had a 2006 Cobalt LS. 2 door automatic that I recently traded for a 2004 Impala. The Cobalt averaged 30.5 mpg no matter how much I babied it, and the Impala so far averages 30.1 mpg. I can't understand why a compact car only gets 30 mpg, where my 2002 Cavalier got 40 mpg on a trip, (but it was a 5 speed). I just couldn't see riding around in a cramped up compact when you can stretch out in a fullsize w/o a gas mileage penalty. :confuse:
  • BTW the Cobalt and the Impala are rated by the EPA for the same highway mileage (32) and having owned both cars seems to be accurate. If you keep your foot out of the Impala starting out and around town you will match the mileage of the Cobalt. :surprise: My 2004 Impala has the 3.4 engine.
  • You hint at a good point: the GM 6cyl pushrods are remarkably efficient. For example, the optional 6cyl in the Malibu is almost as efficient as the base Ecotec 4 (which is in the Cobalt).

    The autobox in a 4cyl really sucks up power. 26mpg combined in a Cobalt autobox is a reasonable (if somewhat disappointing) expectation...
  • steve333steve333 Posts: 201
    My mothers 2006 Impala with the 3.5L V6 is averaging 15MPG. It took many calls to GM to finally get the dealer to admit something is wrong. I am going to take it in in a couple weeks.

    My 2006 Cobalt's MPG is down to 24MPG from 27. I am seriously considering putting in a K&N Air Filter to replace the OEM filter. I hear the K&N filters can increase MPG by up to 4MPG and increase power.
  • okko1okko1 Posts: 327
    car has about 3500 miles on it started at 25mpg has improved
    to 28.3 mpg hiway sounds like every body is doing better than i am wife has 02 z28 camaro with 5.7 LS1 has done
    22.5mpg since it was new
  • steve333steve333 Posts: 201
    My LT Sedan just dropped below 23MPG City driving. I've never gotten above 28MPG on the freeway.
  • sharkman1sharkman1 Posts: 19
    I've had my LS 11 months w/ 21,800 miles and its getting high 30's (30.8 mpg), thats with some spirited driving :). Drove to San Antonio last August and the mpg was heading for 34 mpg but topped out in mid 33mpg, got back to Houston traffic :(
  • okko1okko1 Posts: 327
    curious do you have the 2.4
  • okko1okko1 Posts: 327
    the internal combustion engine is nothing more than a hotair pump. horse power and torque to weight are options how much hot air are you pumping
  • cmhj2000cmhj2000 Se, Pa.Posts: 360
    I just shake my head in misbelief.

    Only have 150 miles on my 07 2.2 LT 1 W/Auto. Haven't been drving it with economy in mind & won't until I get few more miles on it. More concerned with getting the initial break-in with varying speeds & moderate to hard acceleration for short periods of time etc.

    Any who, the computer is telling me I'm averaging nearly 38 MPG. I do have the tires aired up but nothing else. If this car does this on a 1,050 mile trip I have planned in 3 weeks I'll be happier than a pig in slop.
  • poncho167poncho167 Posts: 1,178
    Those computers are close but not always perfect. Try the manual way by calculating the gallons and miles at fill-ups to see how close the puter is.
  • grosloupgrosloup Posts: 239
    The way I do it is by filling the tank up to the rim. I even rock the car to put more in. (the tank neck should be filled to).
    Then I put my mileage to "0" and when it's time to fill up I do the same as explained above. Take the mileage divided by the gallons burned, and there you go, you get your exact m.p.g.
    The computer gives you the average m.p.g. that you did in the passed hour of driving.
    Not to accurate.
  • cmhj2000cmhj2000 Se, Pa.Posts: 360
    I realize the only way to get an accurate read is to fill the tank a couple times and average it out, which I'll be doing on my planned trip at the end of the month. Have been driving for 40 years.

    Was simply commenting I don't believe what the computer is saying.

    Will report back my overall average of about 2,500 miles that'll be logged for the first half of Sep.
  • jaxs1jaxs1 Posts: 2,697
    You are damaging your car by overfilling it trying to get the gas to come up into the filler neck. There is empty air space for a reason.
    Just stop it at the first click and average the mpg over 3 fillups.
  • grosloupgrosloup Posts: 239
    Never thought about that air space.
    You're right,there must be a reason for that. From now on stopping at the first click and using your method.
    Thanks for the advice.
  • okko1okko1 Posts: 327
    i drive nearly the same distance every day it takes about 8 to 9 gallons a week and the average always seems to be with in 1 mile of the mpg of the computer. though this can be differnt depending how hard i drive the car.
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