The Wreckers, Leadfoot, Roadbuster and Topspin, were a trio of engineering geniuses who came to Earth aboard the Autobot spaceship Xantium. The Wreckers rarely left the secret Autobot launch facility at Cape Canaveral, partially because caring for the ship dominated their time, and partially because they were idiots.
The Wreckers helped engineer the Autobots' feigned exile from Earth and assassination by Starscream, and later participated in the battle for Chicago. They proved effective, if vicious, fighters, dismantling their fair share of Decepticons, challenging Shockwave and rescuing Optimus Prime from an embarrassing situation. All three of them would continue fighting and would be among the surviving Autobots, accepting Earth as their true home.
Wreckers race cars

Wreckers vehicle mode