Ford has kept its promise, and returned to the Nurburgring to beat Chevrolet’s lap record in the Corvette ZR1X.

But there’s controversy surrounding the blistering 6:40.835 lap. 

Unlike the Corvette, which set its 6:49.275 lap in production form, there are some questions being asked about the Mustang GTD that Ford used. 

According to Ford, a new variant of the Mustang GTD was used to set the lap — the Competition. 

“The new Mustang GTD Competition will be offered in the future as a special edition, street legal model available in strictly limited, serialized quantities,” Ford said. 

This was the only official information the world has heard about this Mustang GTD Competition, but it clearly has some significant upgrades over the “standard” GTD. 

It likely has more power than the standard 607kW, and this is probably achieved through the use of a larger supercharger. 

It also reportedly has an upgraded DRS system, with secondary dive planes mounted on the front bumper. Ford also didn’t reveal what tyres were used during the lap.

While this is all well and good if Ford follows this up with a production version of this GTD Competition, questions are being asked as to whether the road car will be identical. 

As it is the production car record Ford is chasing here, it won’t mean a whole heap if they aren’t able to back it up with a homologated version.