2018 CADILLAC CT6 Sedan

City mpg:
Highway mpg:

Actual rating will vary with options, driving conditions, habits and vehicle condition.

2018 CADILLAC CT6 Sedan Overview

The standard features of the Cadillac CT6 2.0L Turbo Base include 2.0L I-4 265hp intercooled turbo engine, 8-speed automatic transmission with overdrive, 4-wheel anti-lock brakes (ABS), side seat mounted airbags, curtain 1st and 2nd row overhead airbags, driver and passenger knee airbag, airbag occupancy sensor, automatic air conditioning, 18" aluminum wheels, cruise control, ABS and driveline traction control, StabiliTrak electronic stability.

CT6 Sedan

Starting at: $54,095

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  • Air conditioning
  • Automatic temperature control
  • Front dual zone A/C
  • Memory seat
  • Steering wheel memory
  • Speed control
  • Power windows
  • 1-touch down
  • 1-touch up
  • Remote keyless entry
  • Illuminated entry
  • Tilt steering wheel
  • Telescoping steering wheel
  • Auto-dimming rearview mirror
  • Driver vanity mirror
  • Passenger vanity mirror
  • Garage door transmitter
  • Emergency communication system - OnStar and Cadillac connected services capable
  • Front beverage holders
  • Rear beverage holders
  • Driver door bin
  • Passenger door bin
  • Rear door bins
  • AM/FM radio - SiriusXM
  • Radio data system
  • Steering wheel mounted audio controls
  • Speakers - 8
  • Speaker type - Bose
  • Turn-by-turn navigation directions - OnStar Turn-by-Turn Navigation
  • Wireless phone connectivity - Bluetooth
  • 1st row LCD monitors - 2
  • Primary LCD size - 10.2"
  • Diversity antenna
  • Smart device integration - Apple CarPlay/Android Auto
  • Basic warranty - 48 months/50,000miles
  • Powertrain warranty - 72 months/70,000miles
  • Corrosion perforation warranty - 72 months/ unlimited distance
  • Roadside assistance coverage - 72 months/70,000miles
  • Maintenance warranty - 36 months/36,000miles
  • Max seating capacity - 5
  • Front seats - bucket
  • Power driver seat
  • Power 2-way driver lumbar support
  • Power passenger seat
  • Front center armrest - w/storage
  • Power 2-way passenger lumbar support
  • Rear seats - bench
  • Rear seat center armrest
  • Leather upholstery
  • Genuine wood dashboard insert
  • Genuine wood door panel insert
  • Genuine wood console insert
  • Leather shift knob
  • Leather steering wheel
  • Engine displacement - 2.0 L
  • Engine horsepower - 265hp @ 5,500RPM
  • Engine torque - 295 lb.-ft. @ 3,000RPM
  • Engine bore x stroke - 86.0mm x 86.0mm (3.39" x 3.39")
  • Compression ratio - 9.50 to 1
  • GVWR - 2,164kg (4,770lbs)
  • Exterior length - 5,184mm (204.1")
  • Exterior body width - 1,880mm (74.0")
  • Exterior height - 1,473mm (58.0")
  • Wheelbase - 3,109mm (122.4")
  • Turning radius - 6.1m (20.0')
  • Front legroom - 1,179mm (46.4")
  • Rear legroom - 1,026mm (40.4")
  • Front headroom - 1,021mm (40.2")
  • Rear headroom - 965mm (38.0")
  • Front hiproom - 1,420mm (55.9")
  • Rear hiproom - 1,359mm (53.5")
  • Front shoulder room - 1,481mm (58.3")
  • Rear shoulder room - 1,427mm (56.2")
  • Passenger volume - 3,432L (121.2 cu.ft.)
  • Interior cargo volume - 433 L (15 cu.ft.)
  • Interior maximum cargo volume - 433 L (15 cu.ft.)
  • Rear cargo - trunk
  • Power door mirrors
  • Heated door mirrors
  • Turn signal indicator mirrors
  • Tailpipe finisher - chrome
  • Door mirrors - body-color
  • Bumpers - body-color
  • Engine liters - 2.0
  • Compressor - intercooled turbo
  • Cylinder configuration - I-4
  • Horsepower - 265hp @ 5,500RPM
  • Torque - 295 lb.-ft. @ 3,000RPM
  • Number of valves - 16
  • Variable valve control
  • Engine location - front
  • Recommended fuel - Premium Unleaded
  • Transmission - 8 speed automatic
  • Mode select transmission
  • Manual-shift auto
  • Drive type - rear-wheel
  • Fuel economy combined - 25mpg
  • Fuel tank capacity - 19.5gal.
  • Fuel economy city - 22mpg
  • Fuel economy highway - 30mpg
  • 4 wheel disc brakes
  • ABS brakes
  • Brake assist
  • Dual front impact airbags
  • Dual front side impact airbags
  • Overhead airbag
  • Knee airbag
  • Occupant sensing airbag
  • Panic alarm
  • Perimeter/approach lights
  • Tracker system - OnStar Guidance
  • Ignition disable
  • Security system
  • Electronic stability
  • Traction control
  • Adjustable head restraints - driver and passenger w/tilt
  • Four wheel independent suspension
  • Front anti-roll bar
  • Rear anti-roll bar
  • Power steering
  • Speed-sensing steering
  • Alloy wheels
  • Front tires - 235/50HR18.0
  • Rear tires - 235/50HR18.0
  • Wheel size - 18"
  • Fully automatic headlights
  • Delay-off headlights
  • Variably intermittent wipers
  • Rear window defroster
  • Front reading lights
  • Rear reading lights
  • Display - digital/analog
  • Configurable
  • Tachometer
  • Voltmeter
  • Compass
  • Outside temperature display
  • Low tire pressure warning
  • Trip computer
  • Parking sensors - front and rear
  • Exterior parking camera rear


  MSRP Engine Transmission City/Hwy mpg
2.0L Turbo Base 2018 CADILLAC CT6 Sedan 2.0L Turbo Base Search New $54,095   265-hp 2.0L 4-cyl  8-spd auto  22 / 30  
3.6L 2018 CADILLAC CT6 Sedan 3.6L Search New $55,795   335-hp 3.6L 6-cyl  8-spd auto  18 / 27  
2.0L Turbo Luxury 2018 CADILLAC CT6 Sedan 2.0L Turbo Luxury Search New $59,195   265-hp 2.0L 4-cyl  8-spd auto  22 / 30  
3.6L Luxury 2018 CADILLAC CT6 Sedan 3.6L Luxury Search New $60,695   335-hp 3.6L 6-cyl  8-spd auto  18 / 27  
3.0L Twin Turbo Luxury 2018 CADILLAC CT6 Sedan 3.0L Twin Turbo Luxury Search New $65,195   404-hp 3.0L 6-cyl  8-spd auto  18 / 26  
3.6L Premium Luxury 2018 CADILLAC CT6 Sedan 3.6L Premium Luxury Search New $65,295   335-hp 3.6L 6-cyl  8-spd auto  18 / 27  
3.0L Twin Turbo Premium Luxury 2018 CADILLAC CT6 Sedan 3.0L Twin Turbo Premium Luxury Search New $67,895   404-hp 3.0L 6-cyl  8-spd auto  18 / 26  
3.6L Platinum 2018 CADILLAC CT6 Sedan 3.6L Platinum Search New $84,295   335-hp 3.6L 6-cyl  8-spd auto  18 / 27  
3.0L Twin Turbo Platinum 2018 CADILLAC CT6 Sedan 3.0L Twin Turbo Platinum Search New $88,295   404-hp 3.0L 6-cyl  8-spd auto  18 / 26  


Driving Impression

New Car Test Drive

The 2.0-liter turbocharged model, 428 pounds lighter than the V6 models, is agile and light on its feet, and taut. In fact sometimes it’s too taut; if you want your CT6 to feel like a sport sedan, the four-cylinder is the way to go. But if you want more than that, the CT6 has nothing for the Mercedes AMG or BMW M models.

The turbocharged four-cylinder can hit sixty miles per hour from a standing start in 6.1 seconds, while the V6 can do it in 5.3 seconds. Power from the V6 is strong and smooth, equal to a V8.

The aluminum-and-steel chassis is rigid, and the electric steering is direct, with a pleasant heft and zesty response. But because the CT6 is long and wide, there’s too much car to feel truly sporty; the V6 with its heavier nose tends to understeer when pushed.

There’s an Active Chassis Package including magnetic dampers with a firm grip on body motion, and rear-steer system to help the car turn in better. The rear wheels turn in the opposite direction, up to 3.5 degrees, helping the car rotate in low-speed turns, and providing stability in quick high-speed maneuvers.

However the magnetic dampers don’t offer as much range as the suspensions do on the S-Class and A8. The CT6 rides firm all the time, no matter which mode it’s in, from Tour to Sport. The Mercedes and Audi know when to soften up.

Of course, the Mercedes is about 1000 pounds heavier than the CT6 with the 2.0 engine. The heaviest CT6, the twin-turbo V6 with all-wheel drive, that 400 horsepower four-wheel-drive model, is still 225 pounds lighter than a BMW 7.

Walk Around

New Car Test Drive

The lovely CT6 has sharp sheetmetal creases, LED blade lenses, and other similar styling details. But because the CT6 is bigger, it stands out as the flagship, with a classic long Cadillac hood and trunk.

Interior Overview

New Car Test Drive

The CT6 boasts the finest cabin Cadillac has ever made, as it should, being the most modern flagship. The interior is rife with high-quality materials that fit as well as anything we’ve ever seen from Cadillac. Its design is spare and pure, an exciting direction for Cadillac. Yet it’s short on warmth.

It lacks the evocative flourishes of its German competition. It can’t compete with the Mercedes S-Class with its gorgeous arcs of chrome and glowing LED rainbows, or the fantastic sandwiched wood-and-metal trim in the Audi A8.

The driver’s seat is very firm and flat. We think it needs either more bolstering or softer cushions as well as a wider range of adjustment. There’s a large center console under an armrest. The CUE infotainment system is standard, appearing on a 10.2-inch hi-resolution screen. The pioneering rear camera mirror takes some getting used to.

The CT6 has exceptional room, especially rear legroom, although the center rear passenger will be perched high and uncomfortable on the transmission tunnel, while the tall passengers on either side of him or her will be fine. An optional Rear Seat Package massages and reclines the seats, and shows entertainment on the 10-inch screens, in your 400-horsepower four-wheel-drive Cadillac.

The rear seats don’t fold flat, while the rear seatbelt receivers are too deep in the seats, and hard to find especially when the armrest is down. There’s a trap door over the armrest to the trunk, to carry long thin things. The trunk holds a big 15.3 cubic feet.

It’s quiet inside because the engine has a steel block, says Cadillac. A steel block is quieter than aluminum. That means less interior sound-deadening material is needed. That material weighs more than the difference between a steel block and an aluminum block. That’s the efficient engineering. There appears to be some racing heritage in here. It’s an area where Cadillac has been extremely successful for more than a decade.


New Car Test Drive

The Cadillac CT6 is a worthy flagship. It’s sleek, light, and handles well. It’s big and roomy, quiet and luxurious, and fast enough for its purpose at three levels. The 8-speed automatic is sharp, and the three engines meet different desires. Overall we like the silky non-turbo V6 the most; but it’s hard to deny that honkin’ twin-turbo 404-horsepower baby.

Sam Moses filed this report, with driving impressions by The Car Connection.

Model Lineup

New Car Test Drive

The 2018 Cadillac CT6 ($54,095) comes standard with the 2.0-liter turbocharged four-cylinder and rear-wheel drive. Standard equipment includes rearview camera, while available safety features include forward-collision warnings with automatic braking, blind-spot monitors, and surround-view cameras. (All prices are MSRP and do not include destination charge, taxes, cash allowances or discounts.)

Optional is the 3.6-liter V6 with all-wheel drive ($55,090) or the 3.0-liter Twin Turbo engine and all-wheel drive. The CT6 Plug-In ($76,090) features an 18.4-kWh Lithium-ion propulsion battery paired with a 2.0-liter turbo direct injection engine.

Luxury, Premium, and Platinum trim levels are available. Options include massaging rear seats and 34-speaker sound systems.

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