2018 Jaguar XF vs. 2018 Cadillac CT6

Detailed Review, Specifications & Comparison

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Safety

For enhanced safety, the front and rear seat shoulder belts of the Jaguar XF have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision and force limiters to limit the pressure the belts will exert on the passengers. The Cadillac CT6 doesn’t offer pretensioners for the rear seat belts.

Both the XF and CT6 have child safety locks to prevent children from opening the rear doors. The XF has power child safety locks, allowing the driver to activate and deactivate them from the driver's seat and to know when they're engaged. The CT6’s child locks have to be individually engaged at each rear door with a manual switch. The driver can’t know the status of the locks without opening the doors and checking them.

The XF R-Sport/S/Portfolio’s driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The CT6 doesn’t offer a driver alert monitor.

Both the XF and the CT6 have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, available all wheel drive, crash mitigating brakes, lane departure warning systems, blind spot warning systems, around view monitors and rear cross-path warning.

Warranty

The XF comes with a full 5-year/60,000-mile basic warranty, which covers the entire car and includes 24-hour roadside assistance. The CT6’s 4-year/50,000-mile basic warranty expires 1 year and 10,000 miles sooner.

Jaguar pays for scheduled maintenance on the XF for 2 years and 24,000 miles longer than Cadillac pays for maintenance for the CT6 (5/60,000 vs. 3/36,000).

Engine

The XF’s 2.0 turbo diesel produces 23 lbs.-ft. more torque (318 vs. 295) than the CT6’s standard 2.0 turbo 4 cyl. The XF’s 2.0 turbo diesel produces 33 lbs.-ft. more torque (318 vs. 285) than the CT6’s optional 3.6 DOHC V6.

Fuel Economy and Range

On the EPA test cycle the XF 20d gets better fuel mileage than the CT6:

 

 

XF

CT6

 

RWD

2.0 turbo 4 cyl./8-spd. Auto

31 city/42 hwy

22 city/30 hwy

2.0 turbo 4 cyl./Auto

AWD

2.0 turbo 4 cyl./8-spd. Auto

30 city/40 hwy

18 city/27 hwy

3.6 V6/Auto

On the EPA test cycle the XF gets better fuel mileage than the CT6:

 

 

XF

CT6

 

RWD

2.0 turbo 4 cyl. (247 HP)/8-spd. Auto

25 city/34 hwy

22 city/30 hwy

2.0 turbo 4 cyl./Auto

 

2.0 turbo 4 cyl. (296 HP)/8-spd. Auto

23 city/31 hwy

n/a

 

AWD

2.0 turbo 4 cyl. (247 HP)/8-spd. Auto

23 city/33 hwy

n/a

 

 

2.0 turbo 4 cyl. (296 HP)/8-spd. Auto

22 city/31 hwy

18 city/27 hwy

3.6 V6/Auto

 

3.0 S.C. V6 (380 HP)/8-spd. Auto

20 city/28 hwy

18 city/26 hwy

3.0 turbo V6/Auto

Regenerative brakes improve the XF’s fuel efficiency by converting inertia back into energy instead of wasting it. The CT6 doesn’t offer a regenerative braking system.

Brakes and Stopping

For better stopping power the XF’s brake rotors are larger than those on the CT6:

 

XF

CT6 2.0

CT6 AWD V6

Front Rotors

13.8 inches

12.6 inches

13.6 inches

Rear Rotors

12.8 inches

12.4 inches

12.4 inches

Tires and Wheels

For better traction, the XF has larger standard tires than the CT6 (245/45R18 vs. 235/50R18). The XF’s optional tires are larger than the largest tires available on the CT6 (255/35R20 vs. 245/45R19).

The XF’s standard tires provide better handling because they have a lower 45 series profile (height to width ratio) that provides a stiffer sidewall than the CT6’s standard 50 series tires. The XF’s optional tires have a lower 35 series profile than the CT6’s optional 40 series tires.

Suspension and Handling

The XF Sportbrake has a standard automatic rear load leveling suspension to keep ride height level with a heavy load or when towing. The CT6 doesn’t offer a load leveling suspension.

The XF R-Sport Sedan handles at .86 G’s, while the CT6 pulls only .81 G’s of cornering force in a Car and Driver skidpad test.

The XF S Sedan AWD executes Motor Trend’s “Figure Eight” maneuver 1.2 seconds quicker than the CT6 (25.5 seconds @ .73 average G’s vs. 26.7 seconds @ .66 average G’s).

For better maneuverability, the XF’s turning circle is 1.9 feet tighter than the CT6’s (38.1 feet vs. 40 feet).

Chassis

The XF Sedan is 9 inches shorter than the CT6, making the XF easier to handle, maneuver and park in tight spaces.

As tested by Car and Driver, the interior of the XF S Sedan AWD is quieter than the CT6 AWD:

 

XF

CT6

At idle

40 dB

49 dB

70 MPH Cruising

64 dB

64 dB

Cargo Capacity

The XF Sedan has a much larger trunk with its rear seat up than the CT6 (17.8 vs. 15.3 cubic feet).

The XF’s optional rear seats fold to accommodate long and bulky cargo. The CT6 doesn’t offer folding rear seats, only a ski pass-through.

A standard locking glovebox keeps your small valuables safer in the XF. The CT6 doesn’t offer locking storage for small valuables.

Ergonomics

If the windows are left down on the XF the driver can raise them all using the key in the outside lock cylinder. On a hot day the driver can lower the windows from outside the vehicle using the key in the outside lock cylinder or the keyless remote. The driver of the CT6 can only raise the windows from inside the vehicle, with the ignition on.

The XF’s rain-sensitive wipers adjust their speed and turn on and off automatically based on the amount of rainfall on the windshield. This allows the driver to concentrate on driving without constantly adjusting the wipers. The CT6’s standard intermittent wipers change speed with vehicle speed, but can’t turn on and off or change speed based on changing rainfall.

Heated windshield washer nozzles are optional on the XF to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The CT6 doesn’t offer heated windshield washer nozzles.

In poor weather, headlights can lose their effectiveness as grime builds up on their lenses. This can reduce visibility without the driver realizing. The XF has standard headlight washers to keep headlight output high. The CT6 doesn’t offer headlight washers.

The CT6 Luxury/Premium/Platinum’s cornering lamps activate a lamp on the front corner when the turn signal is activated. The XF (except Base)’s optional adaptive cornering lights turn the actual headlight unit up to several degrees, depending on steering wheel angle and vehicle speed. This lights a significant distance into corners at any speed.

Model Availability

The Jaguar XF comes in sedan and station wagon bodystyles; the Cadillac CT6 isn’t available as a station wagon.

Recommendations

The XF was chosen as one of Car and Driver’s “Top Ten” in 2009. The CT6 has never been a Car and Driver “Top Ten” pick.

The XF was chosen as one of Automobile Magazine’s “All Stars” for 2 of the last 9 years. The CT6 has never been an “All Star.”

© 1991-2018 Advanta-STAR Automotive Research. All rights reserved.

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