2019 Infiniti QX30 vs. 2019 Acura RDX

Detailed Review, Specifications & Comparison

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Safety

For enhanced safety, the front and rear seat shoulder belts of the Infiniti QX30 have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision and force limiters to limit the pressure the belts will exert on the passengers. The Acura RDX doesn’t offer pretensioners for the rear seat belts.

Both the QX30 and the RDX have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front wheel drive, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, rearview cameras, available all wheel drive, lane departure warning systems and around view monitors.

Warranty

The QX30 comes with a full 4-year/60,000-mile basic warranty, which covers the entire truck and includes 24-hour roadside assistance. The RDX’s 4-year/50,000-mile basic warranty expires 10,000 miles sooner.

The QX30’s corrosion warranty is 2 years longer than the RDX’s (7 vs. 5 years).

Reliability

J.D. Power and Associates’ 2018 Initial Quality Study of new car owners surveyed provide the statistics that show that Infiniti vehicles are better in initial quality than Acura vehicles. J.D. Power ranks Infiniti 14th in initial quality, above the industry average. With 7 more problems per 100 vehicles, Acura is ranked 20th, below the industry average.

J.D. Power and Associates’ 2018 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Infiniti vehicles are more reliable than Acura vehicles. J.D. Power ranks Infiniti fourth in reliability, above the industry average. With 39 more problems per 100 vehicles, Acura is ranked 20th.

From surveys of all its subscribers, Consumer Reports’ December 2018 Auto Issue reports that Infiniti vehicles are more reliable than Acura vehicles. Consumer Reports ranks Infiniti 7 places higher in reliability than Acura.

Fuel Economy and Range

On the EPA test cycle the QX30 gets better fuel mileage than the RDX:

 

 

 

MPG

QX30

 

FWD

2.0 turbo 4 cyl.

24 city/33 hwy

 

AWD

2.0 turbo 4 cyl.

21 city/30 hwy

RDX

 

FWD

2.0 turbo 4 cyl.

22 city/28 hwy

 

 

A-Spec 2.0 turbo 4 cyl.

22 city/27 hwy

 

AWD

2.0 turbo 4 cyl.

21 city/27 hwy

 

 

A-Spec 2.0 turbo 4 cyl.

21 city/26 hwy

Transmission

The QX30 offers a standard sequential manual gearbox (SMG). With no clutch pedal to worry about and a fully automatic mode, an SMG is much more efficient than a conventional automatic but just as easy to drive. The RDX doesn’t offer an SMG or a conventional manual transmission.

Brakes and Stopping

For better stopping power the QX30’s front brake rotors are larger than those on the RDX:

 

QX30

RDX

Front Rotors

12.6 inches

12.4 inches

The QX30 stops much shorter than the RDX:

 

QX30

RDX

 

70 to 0 MPH

163 feet

177 feet

Car and Driver

Tires and Wheels

The QX30’s standard tires provide better handling because they have a lower 50 series profile (height to width ratio) that provides a stiffer sidewall than the RDX’s standard 55 series tires.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires standard on the QX30 can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The RDX doesn’t offer run-flat tires.

Suspension and Handling

The QX30 Essential AWD handles at .83 G’s, while the RDX A-Spec AWD pulls only .81 G’s of cornering force in a Car and Driver skidpad test.

For better maneuverability, the QX30 AWD’s turning circle is 2.3 feet tighter than the RDX’s (36.6 feet vs. 38.9 feet). The QX30’s turning circle is 1.6 feet tighter than the RDX’s (37.3 feet vs. 38.9 feet).

Chassis

The Infiniti QX30 may be more efficient, handle and accelerate better because it weighs about 500 to 600 pounds less than the Acura RDX.

The QX30 is 1 foot shorter than the RDX, making the QX30 easier to handle, maneuver and park in tight spaces.

The QX30 is 7.7 inches shorter in height than the RDX, making the QX30 much easier to wash and garage and drive (lower center of gravity).

Servicing Ease

J.D. Power and Associates surveys of service recipients show that Infiniti service is better than Acura. J.D. Power ranks Infiniti first in service department satisfaction. With a 31% lower rating, Acura is ranked 12th.

Ergonomics

Unlike the driver-only memory system in the RDX, the QX30 Luxe/Sport/Essential has standard driver and passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat and outside mirror angle and the front passenger seat also adjusts to the new passenger’s preset preferences.

Heated windshield washer nozzles are standard on the QX30 Sport/Essential to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The RDX doesn’t offer heated windshield washer nozzles.

To help drivers see further while navigating curves, the QX30 Sport/Essential has standard adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle. The RDX doesn’t offer cornering lights.

The QX30 (except Pure/Luxe)’s optional Intelligent Park Assist can parallel park or back into a parking spot by itself, with the driver only controlling speed with the brake pedal. The RDX doesn’t offer an automated parking system.

Economic Advantages

Insurance will cost less for the QX30 owner. The Car Book by Jack Gillis rates the QX30 with a number “5” insurance rate while the RDX is rated higher at a number “10” rate.

The QX30 will cost the buyer less in the long run because of its superior resale value. The IntelliChoice estimates that the QX30 will retain 53.6% to 54.72% of its original price after five years, while the RDX only retains 51.89% to 53.05%.

According to The Car Book by Jack Gillis, the QX30 is less expensive to operate than the RDX because it costs $189 less to do the manufacturer’s suggested maintenance for 50,000 miles. Typical repairs cost much less on the QX30 than the RDX, including $215 less for front brake pads, $103 less for a starter and $68 less for a fuel pump.

IntelliChoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the Infiniti QX30 will be $1215 to $2037 less than for the Acura RDX.

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

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