The Alfa Romeo Stelvio Quadrifoglio is currently the world’s fastest SUV on the Nurburgring. But it appears that its crown is in danger of being stolen by the Mercedes-AMG GLC 63 S.

According to BridgeToGantry, Mercedes is apparently targeting the Nurburgring lap record with the range-topping member of the GLC family.

“Today (April 26), the Nordschleife is being used exclusively by AMG to allow the factory and customer teams to make final preparations for the Nurburgring 24-hour race, barely two weeks away”, the outlet wrote. “But before the race cars hit the track, I heard whispers that an AMG street car might attempt a Nordschleife lap time.”

To back up the rumor, Dale Lomas, the man who wrote the article, filmed a GLC 63 S being pushed hard on the track. The super SUV was apparently running on street tires in the hands of what appears to be a professional racing driver.

Also Read: 2018 Alfa Romeo Stelvio 2.0T Q4 Long-Term Review: The Introduction

If this is indeed the case, and Mercedes-AMG actually broke the Nurburgring SUV lap record with the GLC 63 S, then expect an official announcement, followed by a video, in the coming days/weeks.

The time it has to beat is 7 minutes and 51.7 seconds, as that’s the lap time the Stelvio Quadrifoglio clocked at the 20.6 km- (12.8mi-) long circuit.

Theoretically, the top GLC needs 3.8 seconds for the 0-100km/h (0-62mph) sprint, or 0.1 seconds less than the Stelvio.

On the other hand, the Ferrari-derived 2.9-liter V6 used by the Alfa makes 512PS (505hp / 377kW) and 600Nm (443lb-ft) of torque, whereas the AMG’s 4.0-liter V8 delivers 510PS (503hp / 375kW) and 700Nm (516lb-ft) of torque. We guess it’s going to be close…