Koenigsegg has broken the speed record for a production car after recording a two-way average speed of 277.9mph in the Agera RS. 

The run took place in Pahrump, Nevada, and breaks the previous record holder, the Bugatti Veyron Super Sport, which recorded a speed just shy of 268mph in 2010.

Factory driver Niklas Lilja was behind the wheel for the run. 

Neither Koenigsegg nor Lilja are new to a record. Also driving the Agera RS, they recently broke the 0-400kph-0 record set just weeks earlier by Bugatti's Chiron.

Bugatti’s previous record of 41.96sec is 5.52sec slower than Koenigsegg’s, although Bugatti has yet to do a full top-speed run in the Chiron. Koenigsegg has also yet to fully demonstrate the top speed of its range-topping hypercar, the Regera. 

Although not yet officially confirmed, the Koenigsegg run was recorded and verified by Racelogic.