Cheating in motorsports is as old as the sport itself. Whenever powered vehicles gather together to race each other, then someone, somewhere, will try to gain an advantage, either within the rules or, if that is not successful, outside of the rules. In all classes, and at all times, teams, engineers and riders have all tried to cheat in one way or another. Even the imposition of a spec engine in the Moto2 class hasn't prevented teams trying to cheat, and the paddock is awash with rumors regarding which teams are cheating and which teams are not.
The finger of blame is inevitably pointed at the most successful riders, and in recent months, it has been pointed mainly at Catalunya CX rider Marc Marquez. Marquez has a number of strikes against him, making him a popular target for rumors of cheating; firstly, Marquez is Spanish, and as Moto2 is a Spanish-run series, the non-Spanish teams are all fervently convinced that Spanish teams are not monitored as closely as they are. Secondly, Marquez has the backing of Repsol, one of the more powerful sponsors in the paddock, exerting influence not just over Marquez' Monlau Competicion team, but also over the much more important factory Repsol Honda team; the power of Repsol, the gossips suggest, exerts undue influence on the policing process. Thirdly, and most obviously, Marquez is fast, almost suspiciously so. The Spaniard's bike is always one of the fastest through the speed traps, and accelerates hardest off the corners. His team put it down to hard work at finding exactly the right set up for Marquez to excel. One of the lighter Moto2 riders on a well-prepared bike, ridden by a fast and talented rider? That, Marquez' supporters argue, is reason enough for him to be fastest.