2020 Alfa Romeo Stelvio vs. 2020 Acura RDX

Detailed Review, Specifications & Comparison

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Safety

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/05/30

The Stelvio Ti’s optional driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The RDX doesn’t offer a driver alert monitor.

Both the Stelvio 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 seatbelt pretensioners, height adjustable front shoulder belts, plastic fuel tanks, 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, blind spot warning systems, front parking sensors and rear cross-path warning.

Reliability

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/05/30

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

The RDX’s redline is at 7000 RPM, which causes more engine wear, and a greater chance of a catastrophic engine failure. The Stelvio has a 5500 RPM redline.

The battery on the Stelvio is in the trunk, which protects it from hot underhood temperatures that can degrade battery life. By keeping the Stelvio’s battery 20 to 30 degrees cooler, its life is increased by years. The RDX’s battery is in the hot engine compartment.

Engine

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/05/30

The Stelvio’s 2.0 turbo 4 cyl. produces 8 more horsepower (280 vs. 272) and 26 lbs.-ft. more torque (306 vs. 280) than the RDX’s 2.0 turbo 4 cyl.

As tested in Motor Trend the Alfa Romeo Stelvio is faster than the Acura RDX:

Stelvio

RDX

Zero to 30 MPH

1.7 sec

2.6 sec

Zero to 60 MPH

5.4 sec

7.1 sec

Zero to 80 MPH

9.2 sec

11.8 sec

Passing 45 to 65 MPH

2.9 sec

3.6 sec

Quarter Mile

14 sec

15.5 sec

Speed in 1/4 Mile

97.3 MPH

90.7 MPH

Fuel Economy and Range

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/05/30

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

Stelvio

RDX

2WD

2.0 turbo 4 cyl./Auto 8-Spd.

22 city/29 hwy

22 city/28 hwy

2.0 4 cyl./Auto

n/a

22 city/27 hwy

2.0 4 cyl./Auto

4WD

2.0 turbo 4 cyl./Auto 8-Spd.

22 city/28 hwy

21 city/27 hwy

2.0 4 cyl./Auto

n/a

21 city/26 hwy

2.0 4 cyl./Auto

Brakes and Stopping

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/05/30

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

Stelvio

RDX

Front Rotors

13 inches

12.4 inches

Rear Rotors

12.5 inches

12.2 inches

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

The Stelvio stops shorter than the RDX:

Stelvio

RDX

70 to 0 MPH

176 feet

177 feet

Car and Driver

60 to 0 MPH

127 feet

133 feet

Motor Trend

Suspension and Handling

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/05/30

For a smoother ride and more stable handling, the Stelvio’s wheelbase is 2.6 inches longer than on the RDX (110.9 inches vs. 108.3 inches).

The Stelvio’s front to rear weight distribution is more even (50% to 50%) than the RDX’s (57% to 43%). This gives the Stelvio more stable handling and braking.

The Stelvio AWD handles at .84 G’s, while the RDX A-Spec AWD pulls only .81 G’s of cornering force in a Car and Driver skidpad test.

The Stelvio Ti AWD executes Motor Trend’s “Figure Eight” maneuver quicker than the RDX AWD (26.9 seconds @ .67 average G’s vs. 27.7 seconds @ .62 average G’s).

Passenger Space

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/05/30

The Stelvio has .6 inches more front headroom and .6 inches more rear headroom than the RDX.

Towing

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/05/30

The Stelvio’s standard towing capacity is much higher than the RDX’s (3000 vs. 1500 pounds).

Servicing Ease

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/05/30

The engine in the Stelvio is mounted longitudinally (North-South), instead of sideways, as in the RDX. This makes it easier to service and maintain, because the accessory belts are in front.

Ergonomics

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/05/30

The Stelvio’s rain-sensitive wipers adjust their speed and turn on and off automatically based on the amount of rainfall on the windshield. This allows the driver to concentrate on driving without constantly adjusting the wipers. The RDX’s intermittent wipers change speed with vehicle speed, but can’t turn on and off or change speed based on changing rainfall.

Heated windshield washer nozzles are optional on the Stelvio 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.

Consumer Reports rated the Stelvio’s headlight performance “Very Good,” a higher rating than the RDX’s headlights, which were rated “Good.”

In poor weather, headlights can lose their effectiveness as grime builds up on their lenses. This can reduce visibility without the driver realizing. The Stelvio offers available headlight washers to keep headlight output high. The RDX doesn’t offer headlight washers.

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

To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the Alfa Romeo Stelvio offers an optional wireless phone charging system (Qi) in the center console. The RDX doesn’t offer wireless personal charging.

The Stelvio offers an optional 115-volt a/c outlet in the cargo area, allowing you to recharge a laptop or run small household appliances without special adapters that can break or get misplaced. The RDX doesn’t offer a house-current electrical outlet.

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

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