Compare the2026 Subaru AscentVS 2026 Acura MDX

Safety
Warranty
Reliability
Engine
Fuel Economy and Range
Transmission
Brakes and Stopping
Suspension and Handling
Chassis
Passenger Space
Towing
Servicing Ease
Ergonomics
Economic Advantages
Recommendations

Safety

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The Ascent has standard Whiplash-Reducing Front Seats, which use a specially designed seat to protect the driver and front passenger from whiplash. During a rear-end collision, the Whiplash-Reducing Front Seats system allows the backrest to travel backwards to cushion the occupants and the headrests move forward to prevent neck and spine injuries. The MDX doesn’t offer a whiplash protection system.

With its standard EyeSight, the Subaru Ascent is better at preventing collisions with pedestrians than the Acura MDX, according to the Insurance Institute for Highway Safety:

	Ascent	MDX
Overall Evaluation	GOOD	ACCEPTABLE
	Crossing Child - DAY
12 MPH	AVOIDED	AVOIDED
25 MPH	AVOIDED	-19 MPH
	Crossing Adult - NIGHT
12 MPH Brights	AVOIDED	AVOIDED
12 MPH Low beams	AVOIDED	AVOIDED
25 MPH Brights	AVOIDED	AVOIDED
25 MPH Low beams	AVOIDED	-17 MPH
	Parallel Adult - NIGHT
25 MPH Brights	AVOIDED	AVOIDED
25 MPH Low beams	No Slowing	No Slowing
37 MPH Brights	AVOIDED	-33 MPH
Warning Issued-Brights	3.3 sec	2.3 sec
37 MPH Low beams	No Slowing	No Slowing
Warning Issued-Low beams	1.6 sec	No Warning

In a Vehicle-to-Vehicle Frontal Crash Prevention 2.0 test conducted by the Insurance Institute for Highway Safety (IIHS), the Subaru Ascent achieved a “Good” rating - the highest possible - in forward collision warning and automatic braking systems, outperforming the Acura MDX which scored only an “Acceptable” in these critical safety features.

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

When descending a steep, off-road slope, the Ascent’s standard Hill Descent Control allows you to creep down safely. The MDX doesn’t offer Hill Descent Control.

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

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

	Ascent	MDX
OVERALL STARS	5 Stars	4 Stars
	Driver
STARS	5 Stars	4 Stars
HIC	190	244
Neck Injury Risk	21%	29%
Neck Stress	229 lbs.	304 lbs.
Neck Compression	8 lbs.	59 lbs.
Leg Forces (l/r)	159/292 lbs.	463/521 lbs.
	Passenger
STARS	5 Stars	4 Stars
HIC	210	288
Chest Compression	.7 inches	.7 inches
Leg Forces (l/r)	35/30 lbs.	392/458 lbs.

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

The Insurance Institute for Highway Safety does 40 MPH moderate front offset crash tests on new cars. In this updated test, results indicate that the Ascent is safer than the MDX:

	Ascent	MDX
Overall Evaluation	GOOD	ACCEPTABLE
Structure	GOOD	GOOD
	Driver Injury Measures
Head/Neck Rating	GOOD	GOOD
Chest Rating	GOOD	GOOD
Thigh/hip Rating	GOOD	GOOD
Leg/foot Rating	GOOD	GOOD
Leg Forces L/R	337/382 pounds	562/427 pounds
Restraints	GOOD	GOOD
	Rear Passenger Injury Measures
Head/Neck Rating	GOOD	GOOD
Thigh Rating	GOOD	GOOD
Restraints	ACCEPTABLE	POOR

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 Subaru Ascent is safer than the Acura MDX:

	Ascent	MDX
	Front Seat
STARS	5 Stars	5 Stars
HIC	37	107
Chest Movement	.5 inches	.6 inches
Abdominal Force	73 lbs.	105 lbs.
	Rear Seat
STARS	5 Stars	5 Stars
HIC	81	142
Spine Acceleration	27 G’s	41 G’s
	Into Pole
STARS	5 Stars	5 Stars
HIC	149	549

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

The Subaru Ascent has achieved the Insurance Institute for Highway Safety’s (IIHS) highest rating of “Top Safety Pick Plus” for the 2026 model year. This distinction is based on its exceptional performance in IIHS’ rigorous battery of safety tests. Specifically, it earned a “Good” rating in the latest, more stringent moderate overlap front crash test, a “Good” result in the updated side impact test, a “Good” score in the revised pedestrian crash prevention test, and a “Good” score in the revised vehicle-to-vehicle crash prevention test. The MDX is not even a standard “Top Safety Pick” for 2026.

Warranty

There are over 2 times as many Subaru dealers as there are Acura dealers, which makes it much easier should you ever need service under the Ascent’s warranty.

Reliability

A hardened steel chain, with no maintenance needs, drives the camshafts in the Ascent’s engine. A rubber cam drive belt that needs periodic replacement drives the MDX’s camshafts. If the MDX’s belt breaks, the engine could be severely damaged when the pistons hit the opened valves.

J.D. Power and Associates rated the Ascent second among upper midsize suvs in their 2025 Initial Quality Study. The MDX isn’t in the top three in its category.

J.D. Power and Associates’ 2025 Initial Quality Study of new car owners surveyed provide the statistics that show that Subaru vehicles are better in initial quality than Acura vehicles. J.D. Power ranks Subaru above average in initial quality. With 11 more problems per 100 vehicles, Acura is rated below average.

J.D. Power and Associates’ 2025 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Subaru vehicles are more reliable than Acura With 37 fewer problems per 100 vehicles in the first three years of ownership, J.D. Power ranks Subaru higher than Acura.

From surveys of all its subscribers, Consumer Reports’ March 2026 Auto Issue reports that Subaru vehicles are more reliable than Acura vehicles. Consumer Reports ranks Subaru second in overall reliability. Acura is ranked 7th.

Engine

The Ascent’s 2.4 turbo 4-cylinder produces 10 lbs.-ft. more torque (277 vs. 267) than the MDX’s standard 3.5 SOHC V6.

As tested in Motor Trend the Subaru Ascent is faster than the Acura MDX V6:

	Ascent	MDX
Zero to 60 MPH	6.9 sec	7.5 sec
Quarter Mile	15.2 sec	15.8 sec
Speed in 1/4 Mile	90.5 MPH	88.6 MPH

The flat cylinder configuration of the boxer engine in the Ascent lowers its center of gravity, enhancing handling stability without compromising ground clearance. The MDX doesn’t offer a boxer engine configuration.

Fuel Economy and Range

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

			MPG
Ascent
	AWD	2.4 turbo flat-4	19 city/26 hwy
		Limited/Touring/Onyx 2.4 turbo flat-4	19 city/25 hwy
MDX
	AWD	3.5 SOHC V6	19 city/25 hwy
		3.0 turbo V6	17 city/21 hwy

Transmission

The Ascent has a standard continuously variable transmission (CVT). With no “steps” between gears, it can keep the engine at the most efficient speed for fuel economy, or keep it at its peak horsepower indefinitely for maximum acceleration. The MDX doesn’t offer a CVT.

Brakes and Stopping

The Ascent’s standard front and rear disc brakes are vented to help dissipate heat for shorter stops with less fading. The rear discs on the MDX are solid, not vented.

The Ascent stops much shorter than the MDX:

	Ascent	MDX
70 to 0 MPH	176 feet	184 feet	Car and Driver
60 to 0 MPH	114 feet	133 feet	Motor Trend
60 to 0 MPH (Wet)	136 feet	139 feet	Consumer Reports

Suspension and Handling

The Ascent’s front to rear weight distribution is more even (54.2% to 45.8%) than the MDX’s (57% to 43%). This gives the Ascent more stable handling and braking.

For better maneuverability, the Ascent’s turning circle is 2.5 feet tighter than the MDX’s (38 feet vs. 40.5 feet).

For greater off-road capability the Ascent has a 1.4 inches greater minimum ground clearance than the MDX (8.7 vs. 7.3 inches), allowing the Ascent to travel over rougher terrain without being stopped or damaged.

Chassis

As tested by Car and Driver, the interior of the Ascent Limited is quieter than the MDX Type S:

	Ascent	MDX
Full-Throttle	70 dB	76 dB
70 MPH Cruising	64 dB	68 dB

Passenger Space

The Ascent offers optional seating for 8 passengers; the MDX can only carry 7.

The Ascent has 14.1 cubic feet more passenger volume than the MDX (153.2 vs. 139.1).

The Ascent has 2.7 inches more front headroom, .6 inches more front legroom, 1.9 inches more rear headroom, .1 inches more rear legroom, 2.6 inches more third row legroom, 5.3 inches more third row hip room and 2 inches more third row shoulder room than the MDX.

For enhanced passenger comfort on long trips the Ascent’s middle and third row seats recline. The MDX’s third row seats don’t recline.

Towing

The Ascent’s standard towing capacity is much higher than the MDX’s (5000 vs. 3500 pounds).

Servicing Ease

The engine in the Ascent is mounted longitudinally (North-South), instead of sideways, as in the MDX. This makes it easier to service and maintain, because there are no rear spark plugs and the accessory belts are in front.

J.D. Power and Associates surveys of service recipients show that Subaru service is better than Acura. J.D. Power ranks Subaru third in service department satisfaction. With a 11% lower rating, Acura is ranked 6th.

Ergonomics

In case you lock your keys in your vehicle, or don’t have them with you, you can let yourself in using the Ascent’s exterior PIN entry system. The MDX doesn’t offer an exterior PIN entry system, and its AcuraLink can’t unlock the doors if the vehicle doesn’t have cell phone reception or the driver can’t contact the service.

To help drivers see further while navigating curves, the Ascent has standard adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle. The MDX doesn’t offer cornering lights.

To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the Ascent has standard extendable sun visors. The MDX doesn’t offer extendable visors.

Economic Advantages

According to iSeeCars.com the 2026 Subaru Ascent retains 50.27% of its original value after 5 years, more than the 46.29% resale value of the 2026 Acura MDX after five years, which can save the Subaru’s owner up to $7931 in depreciation.

Recommendations

Consumer Reports® recommends both the Subaru Ascent and the Acura MDX, based on reliability, safety and performance.

The Subaru Ascent outsold the Acura MDX by 7% during 2025.

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