ROBOT-CAR (KO Betatron) 

Background on Robot-Car courtesy of @TM2DB:
Daijin, aka, Betatron, was made by Yonezawa. He was released by Grandstand for Convertors in the UK, and Convert-A-Bots in the US. Same as Deltatron and Sigmatron. There is a blue one that I would desperately love to have. Yours looks like a general KO. There is some weird connection with Tia Fong though. The stickers are nearly identical to the Tia Fong Missile Truck Robot. It's weird. He's a really fun toy though. Especially if the motor works.
Music is Learning to Sleep by Event Staff