I drove a 2005 Cobalt with the 4 speed Automatic and the 2.2L Ecotec. I could get 38mpg highway with the AC on low doing 75mph. Turn the AC off and slow down you could push it over 40. A little Neutral coasting and it can go a little higher.
The Cobalt is a fantastic little car. But, now my little sister drives it and I drive a truck getting a little over half the mileage of the Cobalt. Oh well. All the more reason to frequent Ecomodder!
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