Top speed: 2 of 2 variants rated.
Cadillac CT6 3.0 V6 Twin-Turbo Luxury tops the Cadillac CT6 ranking by Top speed, at 240 km/h (149 mph).
| # | Variant | Year | Body | Fuel | Top speed |
|---|---|---|---|---|---|
| 1 | Cadillac CT6 3.0 V6 Twin-Turbo Luxury | 2017 | Sedan | Petrol | 240 km/h (149 mph) |
| 2 | Cadillac CT6 3.0 V6 Twin-Turbo Platinum | 2017 | Sedan | Petrol | 240 km/h (149 mph) |