2020 Acura RDX vs. 2019 Cadillac XT4

Detailed Review, Specifications & Comparison

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Both the RDX and the XT4 have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front seatbelt pretensioners, front wheel drive, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, rearview cameras, available all wheel drive, blind spot warning systems, around view monitors and rear cross-path warning.

For its top level performance in IIHS driver and passenger-side small overlap frontal, moderate overlap frontal, side impact, roof strength and head restraint tests, its standard front crash prevention system, and its headlight’s “Good” rating, the Insurance Institute for Highway Safety grants the RDX its highest rating: “Top Pick Plus” for 2019, a rating granted to only 46 vehicles tested by the IIHS. The XT4 has not been tested, yet.


A reliable vehicle saves its owner time, money and trouble. Nobody wants to be stranded or have to be without a vehicle while it’s being repaired. Consumer Reports rates the RDX’s reliability 20 points higher than the XT4.

From surveys of all its subscribers, Consumer Reports’ December 2018 Auto Issue reports that Acura vehicles are more reliable than Cadillac vehicles. Consumer Reports ranks Acura 15 places higher in reliability than Cadillac.


The RDX’s 2.0 turbo 4-cyl. produces 35 more horsepower (272 vs. 237) and 22 lbs.-ft. more torque (280 vs. 258) than the XT4’s 2.0 turbo 4-cyl.

As tested in Car and Driver the Acura RDX is faster than the Cadillac XT4:



Zero to 60 MPH

6.6 sec

7.8 sec

Zero to 100 MPH

18.1 sec

23 sec

5 to 60 MPH Rolling Start

7 sec

8.2 sec

Quarter Mile

15.2 sec

16.1 sec

Speed in 1/4 Mile

93 MPH

87 MPH

Fuel Economy and Range

The RDX has 1.2 gallons more fuel capacity than the XT4 FWD’s standard fuel tank (17.1 vs. 15.9 gallons), for longer range between fill-ups.


A 10-speed automatic is standard on the Acura RDX, for better acceleration and lower engine speed on the highway. Only a nine-speed automatic is available for the XT4.

Brakes and Stopping

The RDX stops much shorter than the XT4:



60 to 0 MPH

116 feet

126 feet

Motor Trend

60 to 0 MPH (Wet)

129 feet

141 feet

Consumer Reports

Tires and Wheels

For better traction, the RDX A-Spec’s tires are larger than the largest tires available on the XT4 (255/40R20 vs. 245/45R20).

The RDX’s standard tires provide better handling because they have a lower 55 series profile (height to width ratio) that provides a stiffer sidewall than the XT4’s standard 60 series tires. The RDX A-Spec’s tires have a lower 40 series profile than the XT4 Premium/Sport’s optional 45 series tires.

For better ride, handling and brake cooling the RDX has standard 19-inch wheels. Smaller 18-inch wheels are standard on the XT4.

Suspension and Handling

For better handling and stability, the track (width between the wheels) on the RDX is 1 inch wider in the front and 1.6 inches wider in the rear than on the XT4.

The RDX AWD executes Motor Trend’s “Figure Eight” maneuver quicker than the XT4 Sport AWD (27.2 seconds @ .64 average G’s vs. 27.6 seconds @ .61 average G’s).

For greater off-road capability the RDX has a 1.4 inches greater minimum ground clearance than the XT4 (8.2 vs. 6.8 inches), allowing the RDX to travel over rougher terrain without being stopped or damaged.

Passenger Space

The RDX has 3 cubic feet more passenger volume than the XT4 (104 vs. 101).

The RDX has .2 inches more front headroom, 1.2 inches more front legroom, .5 inches more front hip room, 2.7 inches more front shoulder room, .1 inches more rear hip room and 1.5 inches more rear shoulder room than the XT4.

Cargo Capacity

The RDX has a much larger cargo volume with its rear seat up than the XT4 with its rear seat up (31.1 vs. 22.5 cubic feet). The RDX has a much larger cargo volume with its rear seat folded than the XT4 with its rear seat folded (79.8 vs. 48.9 cubic feet).

Pressing a switch automatically lowers the RDX’s rear seats, to make changing between passengers and cargo easier. The XT4 doesn’t offer automatic folding seats.


The RDX’s front and rear power windows all open or close 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 XT4’s rear power window switches have to be held the entire time to close them fully.


Motor Trend performed a comparison test in its February 2019 issue and the Acura RDX AWD won out over the Cadillac XT4 Sport AWD.

The Acura RDX outsold the Cadillac XT4 by over 8 to one during 2018.

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

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