If you told us 15 years ago General Motors’ fastest car in its entire product portfolio would be a four-door Cadillac sedan, we would have probably shook our heads and walked away. That’s soon to be the reality though, as the 2016 Cadillac CTS-V has a claimed top speed of 200 mph, making it faster than the Camaro Z/28 and ZL1, and even the 2015 Corvette Z06.
Powered by a 640 horsepower version of General Motors’ LT4 6.2-liter supercharged small block V8, the 2016 CTS-V will accelerate from 0-60 mph in 3.7 seconds and hit an aforementioned top end of 200 mph. The 2015 Corvette Z06 will hit 195 mph when not equipped with the downforce-intensive Z07 package, while the ZL1 and Z/28 will crest 184 mph and 172 mph, respectively.
The CTS-V is able to reach its supercar-rivaling top speed thanks to its powerful LT4 engine and lack of downforce-producing aerodynamic components. Even in its base-model trim, the 2015 Z06 still has effective aero pieces, which likely robs it of the extra 5 mph it needs to enter the 200 mph club. The CTS-V is available with an optional aerodynamics package, but Cadillac hasn’t said if this will lower the top speed. Additionally, the eight-speed automatic transmission in the CTS-V may have taller gearing than the track-focused Z06 for additional smoothness.
So there you have it. GM’s fastest car is a four-door luxury sedan. This will probably be the case for quite some time, or at least until Chevy can get around to dropping their mid-engined C8 Corvette.