Cadillac's new flagship fits above the CTS and below the BMW 7 Series and Mercedes-Benz S-Class.
But it's priced to compete against the luxury midsized crowd.
This large sedan possesses some athletic chops and has a steady, controlled ride and a very quiet interior.
Most buyers will opt for the mid-level nonturbo V6, while the top trim carries a 404-hp twin-turbocharged V6.
The eight-speed automatic is smooth and responsive.
All-wheel drive comes standard with the V6s.
The interior is posh and roomy, but cabin storage is a bit scant.
Despite improvements, the updated CUE infotainment touch screen is still unintuitive.