Cadillac CT6 VS Lexus LS 500

Luxury flagships from America and Japan face off.

The Good

Cadillac's new Super Cruise technology is one of the most advanced (and awesome) driver aid systems available today.

The Bad

CUE infotainment is already starting to feel dated relative to the CT6's luxury competitors' tech.

The Bottom Line

The 2018 Cadillac CT6 is a solid luxury value with outstanding driver assistance tech.

Overview

The Good

The LS 500 is Lexus' best interior yet, and the ride is plenty cushy.

The Bad

The F Sport trim sacrifices some softness for very little sport, and that blasted infotainment is frustrating to use.

The Bottom Line

If you look past the awful tech interface, the LS 500 is a good reminder of what Lexus does best.

Ratings

Performance

While the Cadillac CT6 is available with a trio of four- and six-cylinder engines, the Lexus LS 500 only offers one V6 option. (Both cars additionally have hybrid variants.) In its top spec, the CT6's twin-turbo 3.6-liter V6 produces 404 horsepower and 400 pound-feet of torque; the LS 500, meanwhile, uses a twin-turbo 3.5-liter V6 with 416 horsepower and 442 pound-feet. Generally speaking, the Lexus is both more comfortable for highway cruising and better mannered on curvy roads. Both cars are EPA-estimated to achieve 18 miles per gallon in the city, though the Lexus' 27-mpg highway rating is slightly better than the Cadillac's 25 mpg. The LS 500 uses a 10-speed automatic transmission, while the CT6 uses an 8-speed unit, which likely makes up for the highway fuel economy improvement.

Media

Cadillac's CUE interface isn't our favorite system on the market, but it's received a number of improvements over the years. The touchscreen offers crisp graphics and average response times, and offers both Apple CarPlay and Android Auto compatibility. Lexus, meanwhile, uses a huge, 12.3-inch display that's bright and colorful, but that's where our compliments end. The feature set may be rich, but it can only be controlled through the company's absolutely infuriating and difficult-to-use (especially while driving) Remote Touchpad. What's more, Lexus doesn't offer the LS with Apple CarPlay or Android Auto, which is downright unacceptable.

Features

The CT6's killer app is definitely its optional Super Cruise semi-autonomous functionality, which allows for honest-to-goodness hands-off-the-wheel driving. Otherwise, the two full-size luxury sedans pack a similar smattering of luxurious amenities, with plush, spacious accommodations, optional high-end audio systems and automatic everything.

Design

Say what you will about Lexus' huge spindle grille, it really works on the new LS, especially in F Sport guise. Complemented by slim, LED headlights, big wheels at all four corners, and a long-and-low stance, the LS offers the best mix of elegance and sportiness between the two. That's not to say the Cadillac is ugly, of course -- it's still quite attractive, with handsome lines and a simple, understated approach. We aren't totally onboard with the droopy LED eyeliner, but make no mistake, the CT6 has quite a presence on the road.

Overall

Both Cadillac and Lexus offer well-rounded, less-expensive counterparts to full-size luxury barges like the BMW 7 Series and Mercedes-Benz S-Class. Both are packed with great tech, all the comfort and convenience factors you could ask for, and in twin-turbo V6 guises, potent power. Cadillac's Super Cruise tech is absolutely worth your attention, and could be the one feature that puts it above the Lexus for some buyers. But to us, the LS 500's combination of quiet luxury, great style and better on-road dynamics make it our pick, if only by a hair.

Videos / Photos

model 2018 Cadillac CT6 Sedan 4dr Sdn 3.0L Turbo Platinum AWD
  • 2018 Cadillac CT6 Sedan 4dr Sdn 3.6L AWD
    2018 Cadillac CT6 Sedan 4dr Sdn 3.6L AWD -
  • 2018 Cadillac CT6 Sedan 4dr Sdn 3.6L Platinum AWD
    2018 Cadillac CT6 Sedan 4dr Sdn 3.6L Platinum AWD -
  • 2018 Cadillac CT6 Sedan 4dr Sdn 2.0L Turbo Luxury RWD
    2018 Cadillac CT6 Sedan 4dr Sdn 2.0L Turbo Luxury RWD -
  • 2018 Cadillac CT6 Sedan 4dr Sdn 3.0L Turbo Luxury AWD
    2018 Cadillac CT6 Sedan 4dr Sdn 3.0L Turbo Luxury AWD -
  • 2018 Cadillac CT6 Sedan 4dr Sdn 2.0L Turbo RWD
    2018 Cadillac CT6 Sedan 4dr Sdn 2.0L Turbo RWD -
  • 2018 Cadillac CT6 Sedan 4dr Sdn 2.0L PLUG-IN RWD
    2018 Cadillac CT6 Sedan 4dr Sdn 2.0L PLUG-IN RWD -
  • 2018 Cadillac CT6 Sedan 4dr Sdn 3.6L Luxury AWD
    2018 Cadillac CT6 Sedan 4dr Sdn 3.6L Luxury AWD -
  • 2018 Cadillac CT6 Sedan 4dr Sdn 3.6L Premium Luxury AWD
    2018 Cadillac CT6 Sedan 4dr Sdn 3.6L Premium Luxury AWD -
  • 2018 Cadillac CT6 Sedan 4dr Sdn 3.0L Turbo Premium Luxury AWD
    2018 Cadillac CT6 Sedan 4dr Sdn 3.0L Turbo Premium Luxury AWD -

Specs

model 2018 Lexus LS 500 RWD
  • 2018 Lexus LS 500 AWD
    2018 Lexus LS 500 AWD -
  • 2018 Lexus LS 500 F Sport RWD
    2018 Lexus LS 500 F Sport RWD -
  • 2018 Lexus LS 500 F Sport AWD
    2018 Lexus LS 500 F Sport AWD -
Fuel
Gasoline Fuel Fuel Gasoline Fuel
21 MPG MPG 23 MPG
Basics
V6 Cylinder Engine, Turbocharged Engine V6 Cylinder Engine, Turbocharged
All Wheel Drive Drivetrain Rear Wheel Drive
8-Speed A/T, A/T Transmission 10-Speed A/T, A/T, Transmission w/Dual Shift Mode
Body
Sedans Body style Sedans
Sun/Moonroof, Generic Sun/Moonroof, Panoramic Roof Roof Sun/Moonroof, Generic Sun/Moonroof
Braking & Handling
ABS, 4-Wheel Disc Brakes Brakes ABS, 4-Wheel Disc Brakes
Power Steering, All Wheel Steering Steering Power Steering
Wheel Locks, Aluminum Wheels Wheels Wheel Locks, Aluminum Wheels
Technology Features
Smart Device Integration, HD Radio, Premium Sound System, Satellite Radio, AM/FM Stereo, WiFi Hotspot, Entertainment System, MP3 Player, Auxiliary Audio Input Audio Smart Device Integration, Auxiliary Audio Input, MP3 Player, AM/FM Stereo, CD Player, Premium Sound System, Satellite Radio
Keyless Entry, Power Door Locks Locks Power Door Locks, Keyless Entry
Heated Mirrors, Auto-Dimming Rearview Mirror, Power Folding Mirrors, Power Mirror(s) Mirrors Auto-Dimming Rearview Mirror, Driver Vanity Mirror, Passenger Vanity Mirror, Mirror Memory, Heated Mirrors, Power Mirror(s), Passenger Illuminated Visor Mirror, Driver Illuminated Vanity Mirror
Navigation System, Rain Sensing Wipers, Intermittent Wipers, Variable Speed Intermittent Wipers, Adjustable Steering Wheel, Heads-Up Display, Heated Steering Wheel, Engine Immobilizer, Security System, Remote Engine Start, Keyless Start, Back-Up Camera, Universal Garage Door Opener, Adaptive Cruise Control, Cruise Control, Navigation from Telematics, Power Liftgate, Hands-Free Liftgate, Remote Trunk Release, Rear Parking Aid, Automatic Parking, Bluetooth Connection, Telematics, Power Outlet, Leather Steering Wheel Tech Adaptive Cruise Control, Cruise Control, Security System, Telematics, Heads-Up Display, Engine Immobilizer, Rear Parking Aid, Back-Up Camera, Steering Wheel Audio Controls, Trip Computer, Rain Sensing Wipers, Variable Speed Intermittent Wipers, Intermittent Wipers, Automatic Headlights, Remote Trunk Release, Hands-Free Liftgate, Universal Garage Door Opener, Bluetooth Connection, Adjustable Steering Wheel, Heated Steering Wheel, Leather Steering Wheel, Keyless Start, Navigation System
Safety
Daytime Running Lights, Blind Spot Monitor, Lane Keeping Assist, Lane Departure Warning, Night Vision, Cross-Traffic Alert, Integrated Turn Signal Mirrors Safety Features Stability Control, Lane Departure Warning, Brake Assist, Blind Spot Monitor, Traction Control, Lane Keeping Assist, Child Safety Locks, Integrated Turn Signal Mirrors, Daytime Running Lights, Headlights-Auto-Leveling
Front Head Air Bag, Passenger Air Bag, Driver Air Bag, Passenger Air Bag Sensor, Knee Air Bag, Front Side Air Bag, Rear Head Air Bag Air Bags Front Side Air Bag, Driver Air Bag, Passenger Air Bag Sensor, Knee Air Bag, Rear Head Air Bag, Passenger Air Bag, Front Head Air Bag
Cabin
Rear A/C, Climate Control, A/C, Multi-Zone A/C Air Conditioning Rear A/C, Multi-Zone A/C, A/C, Climate Control
Driver Adjustable Lumbar, Bucket Seats, Power Driver Seat, Seat-Massage, Power Passenger Seat, Passenger Adjustable Lumbar, Seat Memory, Cooled Front Seat(s), Heated Front Seat(s), Rear Bench Seat, Heated Rear Seat(s), Cooled Rear Seat(s) Seats Heated Rear Seat(s), Seat-Massage, Heated Front Seat(s), Seat Memory, Passenger Adjustable Lumbar, Cooled Front Seat(s), Bucket Seats, Power Passenger Seat, Driver Adjustable Lumbar, Power Driver Seat, Rear Bench Seat
Dimensions
122.4 in Wheelbase (in) 123 in
204.1 in Length,Overall (in) 206.1 in
58.0 in Height,Overall (in) 57.1 in, 57.5 in, 57.7 in
4399 lbs Base Curb Weight (lbs) 4707 lbs, 4751 lbs
Other Details
19.5 Fuel Tank Capacity, Approx (gal) 21.7
Large Cars EPA Classification Large Cars

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