http://www.tfu.info/subgroup/spychangers.htm They're from Robots in Disguise, but have been used repeatedly before and after the series.
They're the RiD Spychangers. Ironhide, Hot Shot, REV, Daytonus, Side Burn, WARS, Crosswise, and Side Swipe, in that order (left to right, top to bottom).
Rid Spychangers, Ironhide, Hot Shot, Rev, Daytonus, Side Burn, WARS, Crosswise and Sideswipe. Sideswipe, Daytonus and Side Burn's guns fit under the rear of the car, between the legs - their guns are the ones that look like shotguns. Here's our section on the RiD Spychangers - yes, the original six really did get rereleased that many times in RiD! I was shocked as well! http://www.tfw2005.com/resources/rid-spychangers-156/