Fault caused front axle lock-up.

Koenigsegg has revealed that the crash of a One:1 at the Nurburgring on Monday was caused by a faulty front anti-lock braking sensor.

The crash occurred while the One:1 was taking part in an industry pool session, testing for a tilt at the outright Nordschleife record. It hit the barrier at Adenauer Forst, travelling at about 68 miles-per-hour, launched into the air and turned through 180 degrees. It landed 22 feet later on its right-rear wheel. Skid marks on the approach to the corner suggested the brakes had locked.

After the crash, the car was recovered back to the Koenigsegg factory in Angelholm, Sweden where it was stripped down and the cause found. According to Koenigsegg, the front-left ABS sensor failed on the approach to the corner, causing the front axle to lock-up at around 105 mph.

Analysis showed the ABS warning light was lit up, but Koenigsegg admits its small size and position in the center of the dashboard makes it difficult to see while wearing a helmet and focused on the road. The driver won't have noticed any difference in braking feel until he reached the point where the ABS would normally trigger and the axle locked.

Koenigsegg's engineers were able to replicate the fault in a similar car, producing results consistent with the Nurburgring incident.

The One:1's other safety systems - airbags, fuel cut-off, and so on - functioned as they should in the crash. A small fire broke out as carbon fiber touched the hot exhaust, but the driver was quickly able to extinguish the flames. He was taken to hospital for checks, as per procedure, but was released later the same day.

Though the car's body panels and subframes were severely damaged in the crash, there were no fluid leaks and the carbon chassis tub, doors, and roof remained fully intact. The tub and running gear will form the basis of a rebuild.

Koenigsegg also added that its Active Systems Warning will be updated to include ABS faults. At present, ASW only activates when a problem with the active aerodynamics and suspension systems is detected, restricting the car to 60 mph until the fault is fixed. A software update will be rolled out across all cars that need it in due course.

Despite the crash, Koenigsegg said it remains committed to its testing program at the Nurburgring, but has not set out a timetable for when it will resume. Presumably, it depends how long it takes to rebuild the car.



Be part of something big