This stupid aveo, when you try to accelerate it bogs down misfires sounds like a model t at full throttle with less pick up and go. Took it in to the dealership they said they fixed it got it back pulled out of their driveway and it started again. The loop to pull back into the dealership was 1/2 mile, They plugged it in and said it misfired like 800 times!! Thats how they fixed it? Then they told me there was no solution to repair it and it still does it today. I drove it down to myrtle beach from michigan last summer and it did this misfire the whole way down then It ran great for two days on our way back it started misfiring again two hours before we go home.