This F90 BMW M5 managed to lap the Sachsenring in just 1:31.71 sec, and according to tuner AC Schnitzer, the car was still under development at the time.

Even the parts that are now available as carbon fiber mods, where then used as painted GRP bits. The car had never even been on the track before. And yet, it managed to be quicker than the likes of the Lamborghini Aventador LP750-4 SV and the 2017 Porsche 911 Turbo S.

Driver Jörg Müller managed to set a time that’s four seconds faster than what you’d normally be able to achieve in a stock M5. Also, the 1:31.71 sec lap time makes this AC Schnitzer-tuned Bimmer the fastest ever sedan to lap the Sachsenring.

Here are a few other Sachsenring times to put things into perspective:

AC Schnitzer BMW M5 F90: 1:31.71
Aventador LP750-4 SV: 1:31.79
Porsche 911 Turbo S: 1:32.30
AC Schnitzer BMW M3: 1:33.90
BMW M5 F90 (stock): 1:35.55

Instead of its usual 600 PS (592 HP) and 750 Nm (553 lb-ft) of torque, this car put down 700 PS (690 HP) and 850 Nm (627 lb-ft). Unlike some of its other mods, the power kit is currently still in development.

Also in preparation are the AC Schnitzer carbon front spoiler elements, the front splitter, rear diffuser, custom paddle shifters, custom exhaust and spring kit, while the side skirts, rear roof spoiler, carbon fiber ‘Racing’ rear wing, rear skirt protection foil, aluminum pedals, foot rest and iDrive controller cover are good to go.