Last post on Mar 24, 2012 at 5:39 PM
You are in the Chevrolet Cobalt
What is this discussion about?
Chevrolet Cobalt, Fuel Efficiency (MPG), Coupe, Sedan
#285 of 304 Re: My cobalt mpg dropped by 6... [pa356228]
Oct 03, 2009 (5:10 am)
> My cobalt LS dropped to 29.3. Can't fiqure out why.
The changeover to winter fuels may have dropped the BTUs in the fuel. Lower mileage than the summer blends.
#286 of 304 Re: My cobalt mpg dropped by 6... [pa356228]
Oct 03, 2009 (1:05 pm)
it's not really a "trick" to determine mpg by dividing miles by gallons, but since you asked, how's this:
you could use a super-precision scale to weigh the car, drive a certain distance, then
measure its exact weight again.
no stopping for burgers or a caf-pow or shopping or hitchikers or rest-areas.
the change in weight divided by 9 lbs would be the # of gallons used. then divide
that into the distance in miles and you have mpg.
#287 of 304 Just moved back to Pittsburgh, PA
Oct 15, 2009 (1:56 pm)
When I arrived here in Pittsburgh from Virginia Beach, My Cobalt LS mpg reach back to normal 35.4. Two days ago, it fell to 32.5. Did notice the difference BTU's. Guess, they figure no one will want to drive in the winter, besides to get what is necessary. So, no one will care about the mpg. Crazy world we live in.
I'll keep updating now and then, so be patience. Sure feels great to be back home officially. See ya later...
#288 of 304 Re: Just moved back to Pittsburgh, PA [pa356228]
Oct 17, 2009 (6:42 am)
I have a 2009 Cobalt SS Turbo and with checking the mpg,I do it Manuel and by the computer,on the highway im getting between 30 and 34 mpg as long as I keep my foot out of it,if you know what Im talking about. This is my second Cobalt,the last one was a 2007 Cobalt SS Supercharged and the mpg was the same on it. I love my Cobalt.
#289 of 304 Just bought a cobalt 2007, giving poor gas milage
Oct 29, 2009 (5:26 pm)
I bought a used Cobalt 07 with 23000 miles last Friday. I got the oil changed on Monday, and the air filter replaced as well.
It is giving me 24 mpg in the city of Houston, which involves many miles of slow traffic and also a few miles of freeway.,
I don;t understand what I would have to do to get the mileage to a similiar value as you guys are getting, close to 30.
#290 of 304 Re: Just bought a cobalt 2007, giving poor gas milage [houstonrice]
Oct 29, 2009 (5:29 pm)
It is a 2.2 liter standard transmission coupe .
24 mpg is the computer readout.
I hope you have some good suggestions.
#291 of 304 Re: Just bought a cobalt 2007, giving poor gas milage [houstonrice]
Oct 29, 2009 (5:38 pm)
My '06 averages 24 MPG mixed city and freeway. I have no idea why those guys get such great MPG.
#292 of 304 Re: Just bought a cobalt 2007, giving poor gas milage [houstonrice]
Oct 29, 2009 (5:50 pm)
It really depends. I have a 2008 Cobalt LT sedan with an automatic and I average in the high 20's. My commute is 50 miles each way with a mix of moderate to heavy traffic. I live in the suburbs of New York City and I work in the city (Queens). Because of the crazy unpredictable traffic I've gotten anywhere from 25 to 34 MPG.
If you only drive short trips that have a lot of stop and go traffic, then 24 MPG is probably pretty good. The only way to really improve is to be light on the gas and better predict the traffic ahead of you so you don't have to use the brakes too much. Accelerating from 0 or very low speeds is what really kills the fuel economy. Try to keep a constant speed. I find that I get the best MPG between 50 to 60 MPH. 65 is not too bad, but not optimal.
My auto equipped 08 is rated 22 City and 32 Hwy so I'm getting exactly what's advertised.
#293 of 304 Re: Just bought a cobalt 2007, giving poor gas milage [houstonrice]
Oct 29, 2009 (6:42 pm)
>what I would have to do to get the mileage
In jest here, move farther away so you have more freeway type traffic. On that free way gently drive 55-60. Faster speeds mean more air resistance and turbulance around the shape of the car. Also when traffic slows keep your speed up above what must be 40 or a little over so the transmission is in 4th gear (the tach drops another notch); it seems in 3rd at slower speeds the economy just isn't there.
This is based on my experience driving around the area in the Cobalt 2.2 with automatic we bought for our son. At 55 or below on a level road the average hits 40. Add an occasional stop or turn and the average is 35-36. Once the car is warmed up just reset the mileage gauge and see what you're getting in various parts of your drive. The stop and go is probably 20 unless you're gently accelerating and trying not to have to stop.
Another factor might be the gasoline if it has a higher percentage of alcohol.
#294 of 304 Re: No more cobalt???????? [cobaltken]
Nov 23, 2009 (3:36 pm)
My research tells me that the cobalt probably will not survive much longer as GM is bringing the Cruze to the states. It is built on one of GM's Opel platforms and promises to be a much better car than the Cobalt. The Cobalt (besides SS Turbo) is a terrible attempt at a small car. The interior quality is horrible, it practically rolls over on itself in bends, and the electric assisted power steering has no feedback or feel. The 2.2 is noisy, down on power, and utilizes the oldest technology. The 2.4 is a much better engine. The 2.0L turbo in the SS has direct injection, twin cam, and variable valve timing on intake and exhaust. And it produces 260 hp, enough to power the cobalt to 60mph in 5.5 sec. The Cruze will use the 1.8L that was in the Saturn Astra which is a complete dog (128 ft lbs torque). However, they will offer a 1.4L turbo with around 140-150 horse that supposedly achieves 40 mpg highway (EPA estimates) in the Cruze. Hopefully this next small car from European GM will handle like a small car should.