Compare the2024 Cadillac XT6VS 2023 Subaru Ascent

Safety
Warranty
Reliability
Engine
Fuel Economy and Range
Environmental Friendliness
Brakes and Stopping
Tires and Wheels
Suspension and Handling
Chassis
Passenger Space
Cargo Capacity
Servicing Ease
Ergonomics
Model Availability
Economic Advantages

Safety

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The XT6 Premium Luxury/Sport’s optional pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The Ascent doesn’t offer pre-crash pretensioners.

A passive infrared night vision system optional on the XT6 Premium Luxury/Sport helps the driver to more easily detect people, animals or other objects in front of the vehicle at night. Using an infrared camera to detect heat, the system then displays the image on a monitor in the dashboard. The Ascent doesn’t offer a night vision system.

The XT6 has a standard blind spot warning system that uses sensors to alert the driver to objects in the vehicle’s blind spots where the side view mirrors don’t reveal them. Only the Ascent Premium/Limited/Touring offers a blind spot warning system.

To help make backing out of a parking space safer, the XT6 has standard Rear Cross Traffic Alert, helping the driver avoid collisions. Only the Ascent Premium/Limited/Touring offers Rear Cross Traffic Alert.

Both the XT6 and the Ascent have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, front seatbelt pretensioners, height adjustable front shoulder belts, plastic fuel tanks, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, lane departure warning systems, rearview cameras, available all wheel drive and around view monitors.

The National Highway Traffic Safety Administration does 35 MPH front crash tests on new vehicles. In this test, results indicate that the Cadillac XT6 is safer than the Subaru Ascent:

	XT6	Ascent
	Driver
STARS	5 Stars	5 Stars
HIC	167	190
Neck Stress	187 lbs.	229 lbs.
	Passenger
STARS	5 Stars	5 Stars
Chest Compression	.6 inches	.7 inches
Neck Stress	155 lbs.	197 lbs.
Neck Compression	71 lbs.	156 lbs.
Leg Forces (l/r)	9/6 lbs.	35/30 lbs.

New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.

The National Highway Traffic Safety Administration does side impact tests on new vehicles. In this test, which crashes the vehicle into a flat barrier at 38.5 MPH and into a post at 20 MPH, results indicate that the Cadillac XT6 is safer than the Subaru Ascent:

	XT6	Ascent
	Front Seat
STARS	5 Stars	5 Stars
Hip Force	255 lbs.	274 lbs.
	Rear Seat
STARS	5 Stars	5 Stars
Hip Force	249 lbs.	346 lbs.
	Into Pole
STARS	5 Stars	5 Stars
Max Damage Depth	14 inches	18 inches
Spine Acceleration	39 G’s	52 G’s

New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.

Warranty

The XT6 comes with a full 4-year/50,000-mile basic warranty, which covers the entire truck. The Ascent’s 3-year/36,000-mile basic warranty expires 1 year or 14,000 miles sooner.

Cadillac’s powertrain warranty covers the XT6 1 year and 10,000 miles longer than Subaru covers the Ascent. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 6 years or 70,000 miles. Coverage on the Ascent ends after only 5 years or 60,000 miles.

The XT6’s corrosion warranty is 1 year longer than the Ascent’s (6 vs. 5 years).

Reliability

To reliably power the ignition and other systems and to recharge the battery, the XT6 has a standard 220-amp alternator. The Ascent’s 190-amp alternator isn’t as powerful.

To reliably start during all conditions and help handle large electrical loads, the XT6 has a standard 730-amp battery. The Ascent’s 530-amp battery isn’t as powerful.

J.D. Power and Associates rated the XT6 first among upper midsize premium suvs in their 2023 Initial Quality Study. The Ascent isn’t in the top three in its category.

J.D. Power and Associates’ 2023 Initial Quality Study of new car owners surveyed provide the statistics that show that Cadillac vehicles are better in initial quality than Subaru vehicles. J.D. Power ranks Cadillac above average in initial quality. With 15 more problems per 100 vehicles, Subaru is rated lower.

J.D. Power and Associates’ 2022 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Cadillac vehicles are more reliable than Subaru vehicles. J.D. Power ranks Cadillac above average in long-term dependability. With 24 more problems per 100 vehicles in the first three years of ownership, Subaru is rated below average.

Engine

The XT6 Premium Luxury/Sport’s standard 3.6 DOHC V6 produces 50 more horsepower (310 vs. 260) than the Ascent’s 2.4 turbo 4-cylinder.

As tested in Consumer Reports the XT6 Premium Luxury/Sport 3.6 DOHC V6 is faster than the Subaru Ascent:

	XT6	Ascent
Zero to 30 MPH	3 sec	3.3 sec
Zero to 60 MPH	7.1 sec	8 sec
Quarter Mile	15.6 sec	16.4 sec
Speed in 1/4 Mile	93 MPH	88 MPH

Fuel Economy and Range

On the EPA test cycle the XT6 gets better mileage than the Ascent:

			MPG
XT6
	FWD	2.0 turbo 4-cyl.	21 city/27 hwy
		3.6 DOHC V6	19 city/26 hwy
	AWD	2.0 turbo 4-cyl.	21 city/26 hwy
Ascent
	AWD	2.4 turbo flat-4	20 city/26 hwy
		Limited/Touring/Onyx 2.4 turbo flat-4	19 city/25 hwy

An engine control system that can shut down some of the engine’s cylinders helps improve the XT6’s fuel efficiency. The Ascent doesn’t offer a system that can shut down part of the engine.

In heavy traffic or at stoplights the XT6’s engine automatically turns off when the vehicle is stopped, saving fuel and reducing pollution. The engine is automatically restarted when the driver gets ready to move again. If the conditions warrant or the driver wishes, the system can be manually disabled at any time for the duration of a trip. The Ascent doesn’t offer an automatic engine start/stop system.

The XT6 AWD’s standard fuel tank has 2.7 gallons more fuel capacity than the Ascent (22 vs. 19.3 gallons).

The XT6 has a standard cap-less fueling system. The fuel filler is automatically opened when the fuel nozzle is inserted and automatically closed when it’s removed. This eliminates the need to unscrew and replace the cap and it reduces fuel evaporation, which causes pollution. The Ascent doesn’t offer a cap-less fueling system.

Environmental Friendliness

In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Cadillac XT6 higher (6 to 7 out of 10) than the Subaru Ascent (3). This means the XT6 produces up to 24.5 pounds less smog-producing pollutants than the Ascent every 15,000 miles.

Brakes and Stopping

The XT6 stops shorter than the Ascent:

	XT6	Ascent
70 to 0 MPH	171 feet	178 feet	Car and Driver

Tires and Wheels

For better traction, the XT6 Premium Luxury/Sport’s optional tires are larger than the largest tires available on the Ascent (265/45R21 vs. 245/60R18).

The XT6 Premium Luxury/Sport’s optional tires provide better handling because they have a lower 45 series profile (height to width ratio) that provides a stiffer sidewall than the Ascent Onyx/Limited/Touring’s 50 series tires.

For better ride, handling and brake cooling the XT6 Premium Luxury/Sport offers optional 21-inch wheels. The Ascent’s largest wheels are only 20-inches.

The Cadillac XT6’s wheels have 6 lugs for longer wheel bearing life, less chance of rotor warping and greater strength. The Subaru Ascent only has 5 wheel lugs per wheel.

The XT6 has a standard easy tire fill system. When inflating the tires, the vehicle’s integrated tire pressure sensors keep track of the pressure as the tires fill and tell the driver when the tires are inflated to the proper pressure. The Ascent doesn’t offer vehicle monitored tire inflation.

Suspension and Handling

The XT6 offers an optional driver-adjustable suspension system. It allows the driver to choose between an extra-supple ride, reducing fatigue on long trips, or a sport setting, which allows maximum control for tricky roads or off-road. The Ascent’s suspension doesn’t offer adjustable shock absorbers.

The XT6 has vehicle speed sensitive variable-assist power steering, for low-effort parking, better control at highway speeds and during hard cornering, and a better feel of the road. The Ascent doesn’t offer variable-assist power steering.

For better handling and stability, the track (width between the wheels) on the XT6 is 2 inches wider in the front and 2 inches wider in the rear than on the Ascent.

The XT6 Sport AWD handles at .88 G’s, while the Ascent Limited pulls only .79 G’s of cornering force in a Car and Driver skidpad test.

Chassis

The front grille of the XT6 uses electronically controlled shutters to close off airflow and reduce drag when less engine cooling is needed. This helps improve highway fuel economy. The Ascent doesn’t offer active grille shutters.

The XT6 uses computer-generated active noise cancellation to help remove annoying noise and vibration from the passenger compartment, especially at low frequencies. The Ascent doesn’t offer active noise cancellation.

Passenger Space

The XT6 has .5 inches more rear legroom and 1 inch more third row headroom than the Ascent.

Cargo Capacity

The XT6’s cargo area provides more volume than the Ascent.

	XT6	Ascent
Second Seat Folded	78.7 cubic feet	75.6 cubic feet

Pressing a switch automatically lowers the XT6’s second row seats and pressing a switch automatically lowers or raises the third row seats, to make changing between passengers and cargo easier. The Ascent doesn’t offer automatic folding seats.

To make loading groceries and cargo easier when your hands are full, the XT6 Premium Luxury/Sport’s liftgate can be opened and closed just by kicking your foot under the back bumper, leaving your hands completely free. The Ascent doesn’t offer a hands-free gesture to open its liftgate, forcing you to put cargo down if your hands are full.

Servicing Ease

The XT6 uses gas struts to support the hood for easier service access. The Ascent uses a prop rod to support its heavy hood. It takes two hands to open the hood and set the prop rod, the prop rod gets in the way during maintenance and service, and the prop rod could be knocked out, causing the heavy hood to fall on the person maintaining or servicing the car.

J.D. Power and Associates surveys of service recipients show that Cadillac service is better than Subaru. J.D. Power ranks Cadillac second in service department satisfaction. With a 28% lower rating, Subaru is ranked 16th.

Ergonomics

The XT6’s standard easy entry system raises the steering wheel and glides the driver’s seat back, making it easier for the driver to get in and out. The Ascent doesn’t offer an easy entry system.

The XT6 Premium Luxury/Sport offers an optional heads-up display that projects speed, tachometer and navigation instruction readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The Ascent doesn’t offer a heads-up display.

The power windows standard on both the XT6 and the Ascent have locks to prevent small children from operating them. When the lock on the XT6 is engaged the driver can still operate all of the windows, for instance to close one opened by a child. The Ascent prevents the driver from operating the other windows just as it does the other passengers.

The XT6’s front and rear power windows all lower with one touch of the switches, making it more convenient at drive-up windows and toll booths, or when talking with someone outside of the car. The Ascent’s rear power window switches have to be held the entire time to open them fully.

On a hot day the XT6’s driver can lower all the windows from a distance using the keyless remote. The driver of the Ascent can only operate the windows from inside the vehicle, with the ignition on.

The XT6’s standard outside mirrors include heating elements to clear off the mirrors for better visibility. Subaru only offers heated mirrors on the Ascent Premium/Limited/Touring.

When the XT6 is put in reverse, both rearview mirrors tilt from their original position. This gives the driver a better view of the curb during parallel parking maneuvers. Shifting out of reverse puts the mirrors into their original positions. The Ascent’s mirrors don’t automatically adjust for backing.

The XT6 Premium Luxury/Sport’s optional Automatic Park Assist can parallel park or back into a parking spot by itself, starting and stopping automatically, with the driver only responsible for switching from reverse to drive. The Ascent doesn’t offer an automated parking system.

Model Availability

The XT6 is available in both front-wheel drive and four-wheel drive configurations. The Ascent doesn’t offer a two-wheel drive configuration.

Economic Advantages

According to The Car Book by Jack Gillis, the XT6 is less expensive to operate than the Ascent because typical repairs cost much less on the XT6 than the Ascent, including $166 less for a starter, $93 less for a fuel pump and $382 less for front struts.

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