This drawing is of Hardspark, part of the Autobot Sparkdash team. He's a 1988 Japanese recolor of Guzzle, a toy from the same year released in the US. He turns into a Challenger 1 main battle tank. As a Sparkdash/Sparkabot figure, his toy gimmick involves a pullback motor that spits out sparks.
An Online Amateur Sketchpad