The 2018 Cadillac CT6 serves as the brand's prestige sedan, the best it has to offer. Along with full-size luxury, the CT6 promises exceptional levels of craftsmanship, technology, and performance. It's a no-apologies, all-American alternative to the German stalwarts that have ruled this segment for so long.

Best Value

In terms of price, the Premium Luxury trim sits in the middle of the CT6 lineup, but there's certainly nothing average about the level of equipment. Standard features include all-wheel drive, surround-view cameras with recorder, a 12-inch configurable gauge cluster, and a color head-up display. The rearview mirror can display streaming high-definition video captured by the rear camera. Major options are limited to Cadillac's Super Cruise autonomous driving system, a rear infotainment setup with dual displays, and a 34-speaker Bose Panaray sound system.

This high-end hardware is impressive, but isn't for every driver's taste or pocketbook. The Premium Luxury comes standard with a 3.6-liter V6 engine. Cadillac also offers a 3.0-liter twin-turbocharged V6, which provides a major boost in power without a mileage penalty. Some buyers will object to the lack of a V8 engine in a car like this, but the twin-turbo should satisfy even them.

  • Model: 2018 Cadillac CT6 Premium Luxury
  • Engine: 3.0-liter twin-turbocharged V6
  • Output: 404 hp / 400 lb-ft
  • Transmission: Eight-speed automatic
  • Drivetrain: All-wheel drive
  • Fuel Economy: 18 City / 26 Hwy
  • Options: 3.0-liter twin-turbocharged V6 engine ($4,000)
  • Base Price: $66,290 (including a $995 destination charge)
  • Best Value Price: $70,290


Although it's unabashedly large on the outside, the CT6 feels tight and nimble from behind the wheel. Liberal use of high-strength steel and aluminum results in a rigid body structure that's the lightest in this class. Even with all-wheel drive and the twin-turbo engine, the CT6 is a lean luxury car that holds the road just as well as some dedicated sport sedans. The electric power steering provides satisfying feedback, and the taut suspension prevents any hint of unwanted body motion.

The sprint from zero to 60 mph takes no more than five seconds, and the CT6 keeps plowing ahead until the driver backs off. The eight-speed automatic transmission works with the engine to provide bursts of power at any speed. The CT6 settle downs nicely on long stretches, relaxed but alert.


The CT6's well-proportioned body disguises just how big it really is. It's an imposing sedan defined by long, flat surfaces and crisp angles. The LED exterior lighting and cross-hatch grille identify it as a Cadillac, albeit a special one. Above all, the CT6 looks like an important car.

From a design standpoint, the CT6 is quieter on the inside, but just as confident. We appreciate the high functionality and clear layout, joined as they are by fine finishes and expert craftsmanship. The mood is restrained and thoroughly contemporary, which seems like the right approach for a luxury sedan that wants to be taken seriously.

The Best and Worst Things

Buyers expect vault-like build quality in this class, something that eluded past Cadillacs that attempted to compete on the world stage. The CT6 eliminates quality concerns once and for all. Buyers can be assured there are no short cuts or disappointments to be found. The CT6 really is what it claims to be.

As much as we like the CT6's handling, we wish it didn't come at the expense of comfort. The CT6 rides firmly for a luxury sedan, even on the softest driving mode.

Right For? Wrong For?

Buyers who prioritize performance over plushness will delight in the sheer athleticism of the CT6. The irony that it happens to be a big Cadillac makes it all the more entertaining to drive.

The CT6 isn't as serene as its size suggests. Buyers looking for the ultimate cruising experience will be better served by a more traditional, comfort-tuned luxury sedan.

The Bottom Line

As surprising as it is handsome, the 2018 Cadillac CT6 is really a driver's car wrapped in a finely tailored suit.