Certified Benz & Beemer Compares 2017 Acura RDX VS 2017 Infiniti QX50 Near Phoenix, AZ

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2017 Acura RDX

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VS

2017 Infiniti QX50

Safety Comparison

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The Insurance Institute for Highway Safety tests front crash prevention systems. With a score of 5 points, IIHS rates the Collision Mitigating Braking System optional in the RDX as “Superior.” The QX50 scores only 2 points and is rated only “Advanced.”

To help make backing safer, the RDX’s optional cross-path warning system uses wide-angle radar in the rear bumper to alert the driver to vehicles approaching from the side, helping the driver avoid collisions. The QX50 doesn’t offer a cross-path warning system.

The RDX offers optional AcuraLink, which uses a global positioning satellite (GPS) receiver and a cellular system to remotely unlock your doors if you lock your keys in, help track down your vehicle if it’s stolen or send emergency personnel to the scene if any airbags deploy. The QX50 doesn’t offer a GPS response system, only a navigation computer with no live response for emergencies, so if you’re involved in an accident and you’re incapacitated help may not come as quickly.

Both the RDX and the QX50 have standard driver and passenger frontal airbags, front side-impact 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, daytime running lights, rearview cameras, available all wheel drive, lane departure warning systems, blind spot warning systems and rear parking sensors.

For its top level performance in all IIHS frontal, side, rear impact and roof-crush tests, with its optional front crash prevention system, and its headlight’s “Acceptable” rating, the Insurance Institute for Highway Safety grants the RDX its highest rating: “Top Pick Plus” for 2017, a rating granted to only 44 vehicles tested by the IIHS. The QX50 has not been fully tested, yet.

Warranty Comparison

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There are over 31 percent more Acura dealers than there are Infiniti dealers, which makes it easier should you ever need service under the RDX’s warranty.

Reliability Comparison

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The engine in the RDX has a single overhead cam for simplicity. The engine in the QX50 has dual overhead cams, which add to the number of moving parts and the complexity of the cylinder heads.

J.D. Power and Associates’ 2016 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Acura vehicles are more reliable than Infiniti vehicles. J.D. Power ranks Acura 8th in reliability, above the industry average. With 7 more problems per 100 vehicles, Infiniti is ranked 13th.

Fuel Economy and Range Comparison

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On the EPA test cycle the RDX gets better fuel mileage than the QX50:

 

 

RDX

QX50

 

2WD

Auto

20 city/28 hwy

17 city/24 hwy

 

4WD

Auto

19 city/27 hwy

17 city/24 hwy

 

An engine control system that can shut down half of the engine’s cylinders helps improve the RDX’s fuel efficiency. The QX50 doesn’t offer a system that can shut down part of the engine.

To lower fuel costs and make buying fuel easier, the Acura RDX uses regular unleaded gasoline (premium recommended for maximum performance). The QX50 requires premium, which can cost 20 to 55 cents more per gallon.

Tires and Wheels Comparison

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For better traction, the RDX has larger tires than the QX50 (235/60R18 vs. 225/55R18).

Suspension and Handling Comparison

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The RDX has standard front and rear gas-charged shocks for better control over choppy roads. The QX50’s suspension doesn’t offer gas-charged shocks.

For better handling and stability, the track (width between the wheels) on the RDX is 2.7 inches wider in the front and 2.4 inches wider in the rear than on the QX50.

For greater off-road capability the RDX has a 1.6 inches greater minimum ground clearance than the QX50 (8.1 vs. 6.5 inches), allowing the RDX to travel over rougher terrain without being stopped or damaged.

Chassis Comparison

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To almost totally eliminate engine vibration in the passenger area, the RDX has an electronically controlled liquid-filled engine mounts. A computer controlled electric current in the liquid changes its viscosity, allowing the mount to dampen the engine completely at all RPMs. The QX50 uses conventional solid rubber engine mounts.

The RDX uses computer-generated active noise cancellation to help remove annoying noise and vibration from the passenger compartment, especially at low frequencies. The QX50 doesn’t offer active noise cancellation.

Passenger Space Comparison

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The RDX has 6.7 cubic feet more passenger volume than the QX50 (103.5 vs. 96.8).

The RDX has 2.8 inches more front hip room, 3.9 inches more front shoulder room, .4 inches more rear headroom, 3 inches more rear legroom, 4.4 inches more rear hip room and 2.2 inches more rear shoulder room than the QX50.

Cargo Capacity Comparison

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The RDX has a much larger cargo area with its rear seat up than the QX50 with its rear seat up (26.1 vs. 18.6 cubic feet). The RDX has a much larger cargo area with its rear seat folded than the QX50 with its rear seat folded (76.9 vs. 49.7 cubic feet).

The RDX’s cargo area is larger than the QX50’s in almost every dimension:

 

RDX

QX50

Length to seat (2nd/1st)

32.8”/68”

30”/64”

Max Width

49.8”

54”

Min Width

41.7”

39.3”

Height

32”

25”

To make loading and unloading groceries and cargo easier, especially for short adults or children, the RDX has a standard power cargo door, which opens and closes automatically by pressing a button. The QX50 doesn’t offer a power cargo door.

Ergonomics Comparison

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The RDX offers a 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 QX50 doesn’t offer a remote starting system.

The RDX’s optional wipers adjust their speed and turn on and off automatically according to the amount of rainfall on the windshield. The QX50’s intermittent wipers change speed with vehicle speed, but can’t turn on and off or change speed based on changing rainfall.

The RDX offers optional automatic dimming rear and side view mirrors which automatically darken quickly when headlights shine on them, keeping following vehicles from blinding or distracting the driver. The QX50 offers an automatic rear view mirror, but its side mirrors don’t dim.

Optional air conditioned seats in the RDX keep the driver and front passenger comfortable and take the sting out of hot seats in Summer. The QX50 doesn’t offer air conditioned seats.

Optional AcuraLink for the RDX allows the driver and passengers access to select programs on their smartphones, including reading text messages aloud, playing internet radio stations and other connected activities without taking their eyes off the road or their hands from the wheel. The QX50 doesn’t offer factory integrated smartphone program access.

Economic Advantages Comparison

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IntelliChoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the Acura RDX will be $6052 less than for the Infiniti QX50.

Recommendations Comparison

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

 

RDX

QX50

Consumer Reports® Recommends

TRUE

n/a

Car Book “Best Bet”

TRUE

n/a

The Acura RDX outsold the Infiniti QX50 by over three to one during the 2016 model year.

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