Compare the2025 Acura RDXVS 2025 Subaru Outback

Safety
Warranty
Reliability
Engine
Fuel Economy and Range
Brakes and Stopping
Tires and Wheels
Suspension and Handling
Chassis
Cargo Capacity
Servicing Ease
Ergonomics
Economic Advantages
Recommendations

Safety

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The Acura RDX has standard driver and front passenger side knee airbags mounted low on the dashboard. These airbags helps prevent the driver and front passenger from sliding under their seatbelts or the main frontal airbags; this keeps them better positioned during a collision for maximum protection. Knee airbags also help keep the legs from striking the dashboard, preventing knee and leg injuries in the case of a serious frontal collision. The Outback doesn’t offer a front passenger side knee airbag.

The RDX Advance has a standard Surround-View Camera System to allow the driver to see objects all around the vehicle on a screen. The Outback only offers a rear monitor and rear parking sensors that beep or flash a light. That doesn’t help with obstacles to the front or sides.

The RDX 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. A system to reveal vehicles in the Outback’s blind spot costs extra.

To help make backing out of a parking space safer, the RDX has standard Rear Cross Traffic Monitor, helping the driver avoid collisions. Subaru charges extra for Rear Cross Traffic Alert on the Outback and its not available on the Base.

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

Both the RDX and the Outback 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, four-wheel antilock brakes, all wheel drive, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, lane departure warning systems and rearview cameras.

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

	RDX	Outback
	Passenger
STARS	4 Stars	4 Stars
Chest Compression	.6 inches	.6 inches
Neck Injury Risk	30%	43%
Neck Stress	99 lbs.	147 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 Acura RDX is safer than the Subaru Outback:

	RDX	Outback
	Front Seat
STARS	5 Stars	5 Stars
Hip Force	217 lbs.	247 lbs.
	Rear Seat
STARS	5 Stars	5 Stars
Hip Force	462 lbs.	635 lbs.
	Into Pole
STARS	5 Stars	5 Stars
Max Damage Depth	11 inches	14 inches
Spine Acceleration	39 G’s	43 G’s

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

Side impacts caused 23% of all road fatalities in 2018, down from 29% in 2003, when the Insurance Institute for Highway Safety introduced its side barrier test. In order to continue improving vehicle safety, the IIHS has started using a more severe side impact test: 37 MPH (up from 31 MPH), with a 4180-pound barrier (up from 3300 pounds). The results of this newly developed test demonstrates that the Acura RDX is safer than the Outback:

	RDX	Outback
Overall Evaluation	GOOD	GOOD
Structure	GOOD	ACCEPTABLE
	Driver Injury Measures
Head/Neck	GOOD	GOOD
Torso	ACCEPTABLE	ACCEPTABLE
Torso Max Deflection	1.5 in	1.54 in
Torso Deflection Rate	8 MPH	9 MPH
Pelvis	GOOD	ACCEPTABLE
Pelvis Force	692 lbs.	1026 lbs.
Head Protection	GOOD	GOOD
	Passenger Injury Measures
Head/Neck	GOOD	GOOD
Head Injury Criterion	206	387
Neck Compression	156 lbs.	201 lbs.
Torso	GOOD	ACCEPTABLE
Shoulder Deflection	1.18 in	1.81 in
Shoulder Force	357 lbs.	469 lbs.
Pelvis	GOOD	GOOD
Pelvis Force	736 lbs.	848 lbs.
Head Protection	GOOD	GOOD

Instrumented handling tests conducted by the National Highway Traffic Safety Administration and analysis of its dimensions indicate that the RDX is 3.5% less likely to roll over than the Outback.

Warranty

The RDX comes with a full 4-year/50,000-mile basic warranty, which covers the entire truck and includes 24-hour roadside assistance. The Outback’s 3-year/36,000-mile basic warranty expires 1 year or 14,000 miles sooner.

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

Reliability

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 30 points higher than the Outback.

From surveys of all its subscribers, Consumer Reports’ January 2024 Auto Issue reports that Acura vehicles are more reliable than Subaru vehicles. Consumer Reports ranks Acura fourth in overall reliability. Subaru is ranked 6th.

Engine

The RDX’s 2.0 turbo 4-cylinder produces 90 more horsepower (272 vs. 182) and 104 lbs.-ft. more torque (280 vs. 176) than the Outback 2.5i’s standard 2.5 DOHC 4-cylinder. The RDX’s 2.0 turbo 4-cylinder produces 12 more horsepower (272 vs. 260) and 3 lbs.-ft. more torque (280 vs. 277) than the Outback XT/Wilderness’ standard 2.4 turbo 4-cylinder.

As tested in Motor Trend the Acura RDX is faster than the Outback 2.5i 2.5 DOHC 4-cylinder:

	RDX	Outback
Zero to 60 MPH	6.4 sec	8.7 sec
Quarter Mile	14.8 sec	16.6 sec
Speed in 1/4 Mile	94.7 MPH	86.1 MPH

Fuel Economy and Range

On the EPA test cycle the RDX gets better fuel mileage than the Outback Wilderness (21 city/27 hwy vs. 21 city/26 hwy).

The RDX 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 Outback doesn’t offer a cap-less fueling system.

Brakes and Stopping

The RDX stops much shorter than the Outback:

	RDX	Outback
70 to 0 MPH	180 feet	191 feet	Car and Driver
60 to 0 MPH	116 feet	132 feet	Motor Trend

Tires and Wheels

For better traction, the RDX has larger standard tires than the Outback (235/55R19 vs. 225/65R17). The RDX A-Spec’s tires are larger than the largest tires available on the Outback (255/45R20 vs. 225/65R17).

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 Outback’s standard 65 series tires. The RDX A-Spec’s tires have a lower 45 series profile than the Outback Onyx/Limited/Touring’s 60 series tires.

For better ride, handling and brake cooling the RDX has standard 19-inch wheels. Smaller 17-inch wheels are standard on the Outback. The RDX A-Spec’s 20-inch wheels are larger than the 18-inch wheels on the Outback Onyx/Limited/Touring.

The RDX 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 Outback doesn’t offer vehicle monitored tire inflation.

Suspension and Handling

The RDX 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 or off-road. The Outback’s suspension doesn’t offer adjustable shock absorbers.

The RDX 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 Outback doesn’t offer variable-assist power steering.

For better handling and stability, the track (width between the wheels) on the RDX is 2.3 inches wider in the front and 1.8 inches wider in the rear than the average track on the Outback.

The RDX A-Spec handles at .83 G’s, while the Outback Wilderness pulls only .74 G’s of cornering force in a Car and Driver skidpad test.

The RDX executes Motor Trend’s “Figure Eight” maneuver 1.2 seconds quicker than the Outback Limited (27.2 seconds @ .64 average G’s vs. 28.4 seconds @ .62 average G’s).

Chassis

The RDX is 3.7 inches shorter than the Outback Wilderness, making the RDX easier to handle, maneuver and park in tight spaces.

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

Cargo Capacity

The RDX has a larger cargo volume with its rear seat folded than the Outback with its rear seat folded (79.8 vs. 75.6 cubic feet).

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

Servicing Ease

The RDX uses gas struts to support the hood for easier service access. The Outback 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.

Ergonomics

The RDX’s standard easy entry system glides the driver’s seat back, making it easier for the driver to get in and out. The Outback doesn’t offer an easy entry system.

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

The RDX’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 Outback’s standard rear power window switches have to be held the entire time to open or close them fully. The Outback Limited/Wilderness/Touring/Onyx Edition’s .

If the windows are left open on the RDX the driver can close them all at the outside door handle or from a distance using the remote. On a hot day the driver can lower the windows from a distance using the keyless remote. The driver of the Outback can only operate the windows from inside the vehicle, with the ignition on.

The RDX has standard Smart Entry that allows you to unlock the doors from either front door handle, open the cargo door, and start the engine, all without removing the key from the pocket or purse. Keyless Access and Start costs extra on the Outback and isn’t available on the Outback Base.

The RDX’s standard speed-sensitive wipers speed up when the vehicle does, so that the driver doesn’t have to continually adjust the speed of the wipers. The Outback’s manually variable intermittent wipers have to be constantly adjusted. The RDX Advance’s standard wipers adjust their speed and turn on and off automatically according to the amount of rainfall on the windshield.

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

The RDX has a standard dual zone air conditioning allows the driver and front passenger to choose two completely different temperatures so people with different temperature preferences won’t have to compromise. This makes both the driver and front passenger as comfortable as possible. Dual zone air conditioning is only available on the Outback Premium/Limited/Wilderness/Touring/Onyx.

Both the RDX and the Outback offer rear vents. For greater rear passenger comfort, the RDX has standard rear air conditioning vents to keep rear occupants cool in summer or warm in winter. The Outback doesn’t offer rear air conditioning vents, only heat vents.

The Acura RDX has a standard Homelink wireless remote control system for garage door operation and device management, conveniently located on the rear view mirror. Homelink® eliminates the need for separate garage door openers and associated risks of losing, breaking, or having dead batteries. Subaru charges extra for Homelink® on the Outback.

To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the Acura RDX has a standard wireless phone charging system (Qi) in the center console. Wireless charging costs extra on the Outback and isn’t available on the Outback Base.

Economic Advantages

According to The Car Book by Jack Gillis, the RDX is less expensive to operate than the Outback because it costs $282 less to do the manufacturer’s suggested maintenance for 50,000 miles. Typical repairs cost much less on the RDX than the Outback, including $71 less for front struts and $288 less for a timing belt/chain.

Recommendations

The Acura RDX has won recognition from these important consumer publications:

	RDX	Outback
Consumer Reports® Recommends	TRUE	TRUE
Car Book “Best Bet”	TRUE	FALSE