It's a monster, but not for the reasons you may think. While 668 horsepower and rear-wheel drive might sound like a combination good for only burnouts and barely controllable straight-line acceleration, the Blackwing's mix of sophisticated electronic controls gives its driver the confidence to use that power everywhere.
Compared to a regular CT5, the CT5-V Blackwing features a stiffer body, adaptive suspension dampers, sticky tires, big brakes, an electronically controlled limited-slip differential and multi-level stability control. Cadillac also did a great job integrating these parts to make the driving experience fully come together.
As an example: The Blackwing is a big and heavy sedan, but its handling is surprisingly nimble. The differential carefully doles out power to the Michelin tires, letting you hammer down far earlier than you anticipate when exiting corners. The damper tuning means you can drive over track curbing with the gas pedal pinned without the rear tires spinning. Adjustable stability control helps you learn the limits of the car and your abilities, and it teaches you when and where to back off.
Cadillac's engineers say the automatic transmission can shift more quickly than Porsche's much-celebrated PDK dual-clutch transmission, but the Blackwing also changes shift speed and harshness midcorner so as to not upset the tires. So equipped, the Blackwing can do 0-60 mph in 3.4 seconds, according to Cadillac.
Impressive as that may be, costlier all-wheel-drive-only rivals such as the BMW M5 and Mercedes-Benz AMG E 63 S boast slightly quicker figures. The Blackwing's manual transmission is certainly slower still, but it's hugely fun thanks to a no-lift shift feature that allows you to keep the gas pedal pinned during a full-throttle upshift without fear of damaging the driveline. And — let's back up here — did you notice that we just wrote "manual transmission"? You can barely find manuals on economy sedans these days, and they're fully extinct on the latest high-performance midsize luxury sedans from Audi, BMW, Mercedes and Porsche. It's a unique selling point for the CT5-V Blackwing.
Supersedan power and acceleration require impressive braking power. To that end, the Blackwing comes standard with 15.7-inch rotors with Brembo six-piston calipers up front and 14.7-inch rotors with four-piston calipers in the rear. If you plan some track time, the available carbon-ceramic brakes reduce unsprung mass by 53 pounds and remain fade-free even after heavy track use. While the M5 and E 63 offer similar hardware, the Blackwing packs yet another unique selling point by offering optional magnesium wheels to cut weight even more.