Can i fit 3 motor places within 2009 colbalt?

it will be really tight fit but any 3 carseats will be keep the older kids carseats as rigid as you can and not big and bulky and they will fit

I have a Cobalt and I surmise it'll be a very tight squeeze you may have a hard time getting a third one within but I've never attempted it so good luck.

may be tight squeeze. we had a cobalt and upgraded to a durango when my son was born. you can always try it out if you dont close to it get another car.