FastestLaps' 7:42 estimate around Germany's North Loop is very similar to my 7:38 for the Cadillac CTS-V3! Most certainly accurate!
The Series 3 Cadillac CTS-V is faster than the Dodge Charger SRT Hellcat in just about every way. If you didn't opt for the Carbon Fiber appearance package, the CTS-V3's looks would remain subtle as a muscle car.
This car also led Lexus into building the GS F which ONLY had 467 hp, however if it was equipped with the OEM-approved TRD-Magnuson supercharger kit from the Tundra/Sequoia (+8.5 psi = >600 hp), that car would start a total smackdown fight between itself and this car along with the Charger Hellcat as far as sub-US$100,000 super-sedans go.
Because of the better aerodynamics, the CTS-V actually does beat the Hellcat.
2016 Cadillac CTS-V
Claimed Power: 640 hp @ 6300 rpm
Claimed Torque: 630 lb-ft @ 3600 rpm
Bore x Stroke: 103.25 mm x 92 mm
Number of Cylinders: 8
Boost Pressure: 0.65 bar
BMEP d: 12.0 bar
VE un-boost: 100.00%
VE boost: 134.57%
MPS @ Peak Power: 18 m/s
Actual Power: 653 hp @ 5870 rpm
Actual Torque: 642 lb-ft @ 3910 rpm
Drivetrain: RWD; 8AT
Estimated Weight: 4052 lb
0-60 MPH: 4.1 sec
0-100 MPH: 7.9 sec
0-150 MPH: 16.1 sec
0-200 MPH: 36.9 sec
1/4-Mile (street): 11.9 sec @ 129 mph
1/4-Mile (drag): 11.2 sec @ 125 mph
Top Speed: 214 mph
Motor Trend Figure-8: 24.4 sec @ 0.97 G
Nürburgring Nordschleife: 7:38
Top Gear Test Track (Power Lap): 1:22