2020 Cadillac CT6 vs. 2019 Infiniti Q70

Detailed Review, Specifications & Comparison

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Safety

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In the past twenty years hundreds of infants and young children have died after being left in vehicles, usually by accident. When turning the vehicle off, drivers of the CT6 are reminded to check the back seat if they opened the rear door before starting out. The Q70 doesn’t offer a back seat reminder.

To provide maximum traction and stability on all roads, All-Wheel Drive is standard on the CT6. But it costs extra on the Q70.

An active infrared night vision system standard on the CT6 Premium Luxury/Platinum helps the driver to more easily detect people, animals or other objects in front of the vehicle at night. Using an infrared camera and near-infrared lights to detect heat, the system then displays the image on a monitor in the dashboard. The Q70 doesn’t offer a night vision system.

Compared to metal, the CT6’s plastic fuel tank can withstand harder, more intrusive impacts without leaking; this decreases the possibility of fire. The Infiniti Q70 has a metal gas tank.

Both the CT6 and the Q70 have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front seatbelt pretensioners, height-adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, rearview cameras and available around view monitors.

Warranty

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There are over 4 times as many Cadillac dealers as there are Infiniti dealers, which makes it much easier should you ever need service under the CT6’s warranty.

Reliability

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The battery on the CT6 is in the trunk, which protects it from hot underhood temperatures that can degrade battery life. By keeping the CT6’s battery 20 to 30 degrees cooler, its life is increased by years. The Q70’s battery is in the hot engine compartment.

J.D. Power and Associates’ 2019 Initial Quality Study of new car owners surveyed provide the statistics that show that Cadillac vehicles are better in initial quality than Infiniti vehicles. J.D. Power ranks Cadillac 17th in initial quality. With 1 more problems per 100 vehicles, Infiniti is ranked 19th.

Engine

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The CT6’s standard 3.6 DOHC V6 produces 5 more horsepower (335 vs. 330) and 15 lbs.-ft. more torque (285 vs. 270) than the Q70 3.7 LUXE’s standard 3.7 DOHC V6. The CT6 Platinum’s standard 4.2 turbo V8 produces 80 more horsepower (500 vs. 420) and 157 lbs.-ft. more torque (574 vs. 417) than the Q70 5.6 LUXE’s standard 5.6 DOHC V8.

Fuel Economy and Range

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On the EPA test cycle the CT6 V6 gets better highway fuel mileage than the Q70 3.7 LUXE AWD (18 city/27 hwy vs. 18 city/24 hwy).

An engine control system that can shut down half of the engine’s cylinders helps improve the CT6’s fuel efficiency. The Q70 doesn’t offer a system that can shut down part of the engine.

In heavy traffic or at stoplights the CT6’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. (Start/Stop isn’t accounted in present EPA fuel mileage tests.) The Q70 doesn’t offer an automatic engine start/stop system.

The CT6 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 Q70 doesn’t offer a cap-less fueling system.

Environmental Friendliness

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In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Cadillac CT6 higher (5 out of 10) than the Infiniti Q70 (3). This means the CT6 produces up to 16.5 pounds less smog-producing pollutants than the Q70 every 15,000 miles.

Transmission

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A ten-speed automatic is standard on the Cadillac CT6, for better acceleration and lower engine speed on the highway. Only a seven-speed automatic is available for the Q70.

Brakes and Stopping

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For better stopping power the CT6’s brake rotors are larger than those on the Q70:

CT6 AWD

CT6 Platinum

Q70

Q70 Sport

Front Rotors

13.6 inches

14.6 inches

12.6 inches

14 inches

Rear Rotors

12.4 inches

13.3 inches

12.1 inches

13.8 inches

Tires and Wheels

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The CT6’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 Q70’s standard 50 series tires.

For better ride, handling and brake cooling the CT6 has standard 19-inch wheels. Smaller 18-inch wheels are standard on the Q70.

The CT6 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 Q70 doesn’t offer vehicle monitored tire inflation.

Suspension and Handling

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The CT6 offers an available 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. The Q70’s suspension doesn’t offer adjustable shock absorbers.

For a smoother ride and more stable handling, the CT6’s wheelbase is 8.2 inches longer than on the Q70 (122.4 inches vs. 114.2 inches). The CT6’s wheelbase is 2.3 inches longer than on the Q70L (122.4 inches vs. 120.1 inches).

For better handling and stability, the track (width between the wheels) on the CT6 is 1.4 inches wider in the front and 2.3 inches wider in the rear than the average track on the Q70.

The CT6’s front to rear weight distribution is more even (52.5% to 47.5%) than the Q70’s (53.8% to 46.2%). This gives the CT6 more stable handling and braking.

Chassis

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The front grille of the CT6 uses electronically controlled shutters to close off airflow and reduce drag when less engine cooling is needed. This helps improve highway fuel economy. The Q70 doesn’t offer active grille shutters.

Passenger Space

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Because it has more passenger and cargo room, the EPA rates the CT6 a Large car, while the Q70 is rated a Mid-size.

The CT6 has 17.6 cubic feet more passenger volume than the Q70 (121.2 vs. 103.6).

The CT6 has 1.1 inches more front headroom, 2 inches more front legroom, 1.6 inches more front hip room, .3 inches more rear headroom and 4.2 inches more rear legroom than the Q70.

For enhanced passenger comfort on long trips the CT6 Platinum’s rear seats recline. The Q70’s rear seats don’t recline.

Cargo Capacity

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The CT6 has a larger trunk than the Q70 (15.8 vs. 14.9 cubic feet).

To make loading and unloading groceries and cargo easier when your hands are full, the CT6 Premium Luxury/Platinum’s power trunk can be opened or closed just by kicking your foot under the back bumper, leaving your hands completely free. The Q70 doesn’t offer a power or hands-free opening trunk.

Towing

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The CT6 has a 1000 lbs. towing capacity. The Q70 has no towing capacity.

Servicing Ease

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The CT6 has a maintenance free battery for long life without checking the battery’s water level. The Q70 doesn’t have a maintenance free battery, so the water level in the battery’s cells must be checked often to prevent damage.

J.D. Power and Associates surveys of service recipients show that Cadillac service is better than Infiniti. J.D. Power ranks Cadillac third in service department satisfaction. With a 2% lower rating, Infiniti is ranked fourth.

Ergonomics

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The CT6 has a standard remote vehicle starting system, so the vehicle can be started from inside the driver's house. This allows the driver to comfortably warm up the engine before going out to the vehicle. The climate system will also automatically heat or cool the interior. The Q70 doesn’t offer a remote starting system.

Unlike the driver-only memory system in the Q70, the CT6 Premium Luxury/Platinum has a passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat, steering wheel position, suspension setting, outside mirror angle and radio stations and the front passenger seat also adjusts to the new passenger’s preset preferences.

The CT6’s instruments include an oil pressure gauge and a temperature gauge - which could save your engine! Often ‘idiot lights’ don’t warn you until damage has been done. The Q70 does not have an oil pressure gauge.

The CT6 Premium Luxury/Platinum offers an optional heads-up display that projects speed and other key instrumentation readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The Q70 doesn’t offer a heads-up display.

The CT6’s power parking brake sets with one touch and releases with one touch or automatically. The Q70’s parking brake has to released manually.

The power windows standard on both the CT6 and the Q70 have locks to prevent small children from operating them. When the lock on the CT6 is engaged the driver can still operate all of the windows, for instance to close one opened by a child. The Q70 prevents the driver from operating the other windows just as it does the other passengers.

The CT6’s front and rear power windows all open or close fully with one touch of the switches, making it more convenient at drive-up windows and toll booths, or when talking with someone outside the car. The Q70’s rear power window switches have to be held the entire time to open or close them fully.

While driving with high beams on, sensitive light sensors standard on the CT6 detect other vehicles which could be blinded and automatically switch to low beams. The Q70 doesn’t offer automatic dimming high beams.

The CT6 Premium Luxury/Platinum has standard front air-conditioned seats and the CT6 Platinum also has them in the rear. This keeps the passengers comfortable and takes the sting out of hot seats in summer. The Q70 doesn’t offer air-conditioned seats in the rear.

To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the Cadillac CT6 has a standard wireless phone charging system (Qi) in the center console. The Q70 doesn’t offer wireless personal charging.

The CT6 Premium Luxury/Platinum’s 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 Q70 doesn’t offer an automated parking system.

Economic Advantages

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Insurance will cost less for the CT6 owner. The Car Book by Jack Gillis rates the CT6 with a number “3” insurance rate while the Q70 is rated higher at a number “5” rate.

According to The Car Book by Jack Gillis, the CT6 is less expensive to operate than the Q70 because typical repairs cost much less on the CT6 than the Q70, including $4 less for a water pump, $482 less for front struts, $671 less for a timing belt/chain and $432 less for a power steering pump.

Recommendations

© 1999 - 2019 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2019/11/20

The Cadillac CT6 outsold the Infiniti Q70 by almost three to one during the 2019 model year.

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