2019 Acura RLX vs. 2019 Genesis G80

Detailed Review, Specifications & Comparison

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Safety

The RLX Sport Hybrid has a standard Surround View Camera System to allow the driver to see objects all around the vehicle on a screen. The G80 only offers a rear monitor and front and rear parking sensors that beep or flash a light. That doesn’t help with obstacles to the sides.

Compared to metal, the RLX’s plastic fuel tank can withstand harder, more intrusive impacts without leaking; this decreases the possibility of fire. The Genesis G80 has a metal gas tank.

Both the RLX and the G80 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, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, lane departure warning systems, blind spot warning systems, rearview cameras and rear cross-path warning.

The National Highway Traffic Safety Administration does 35 MPH front crash tests on new vehicles. In this test, results indicate that the Acura RLX is safer than the Genesis G80:

 

RLX

G80

 

Driver

STARS

5 Stars

5 Stars

Leg Forces (l/r)

305/387 lbs.

268/514 lbs.

 

Passenger

STARS

5 Stars

5 Stars

Neck Injury Risk

29%

35%

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 RLX is safer than the Genesis G80:

 

RLX

G80

 

Front Seat

STARS

5 Stars

4 Stars

Chest Movement

.7 inches

1.3 inches

Abdominal Force

175 G’s

195 G’s

 

Into Pole

STARS

5 Stars

5 Stars

HIC

227

230

Spine Acceleration

39 G’s

40 G’s

Hip Force

678 lbs.

857 lbs.

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

Reliability

The engines in the RLX have a single overhead cam for simplicity. The engines in the G80 have dual overhead cams, which add to the number of moving parts and the complexity of the cylinder heads.

Fuel Economy and Range

On the EPA test cycle the RLX Sport Hybrid gets better fuel mileage than the G80 3.8 AWD (28 city/29 hwy vs. 18 city/24 hwy).

On the EPA test cycle the RLX gets better fuel mileage than the G80:

 

 

 

MPG

RLX

 

FWD

3.5 SOHC V6

20 city/29 hwy

 

AWD

Sport Hybrid 3.5 V6 Hybrid

28 city/29 hwy

G80

 

RWD

3.8 DOHC V6

18 city/26 hwy

 

 

3.3T 3.3 turbo V6

17 city/25 hwy

 

 

5.0 DOHC V8

16 city/24 hwy

 

AWD

3.8 DOHC V6

18 city/24 hwy

 

 

3.3T 3.3 turbo V6

17 city/24 hwy

 

 

5.0 DOHC V8

15 city/23 hwy

An engine control system that can shut down half of the engine’s cylinders helps improve the RLX’s fuel efficiency. The G80 doesn’t offer a system that can shut down part of the engine.

Regenerative brakes improve the RLX Sport Hybrid’s fuel efficiency by converting inertia back into energy instead of wasting it. The G80 doesn’t offer a regenerative braking system.

In heavy traffic or at stoplights the RLX Sport Hybrid’s engine automatically turns off when the vehicle is stopped, saving fuel and reducing pollution. The engine is automatically restarted when the driver gets ready to move again. (Start/Stop isn’t accounted in present EPA fuel mileage tests.) The G80 doesn’t offer an automatic engine start/stop system.

The RLX 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 G80 doesn’t offer a cap-less fueling system.

Transmission

A 10-speed automatic is standard on the Acura RLX V6, for better acceleration and lower engine speed on the highway. Only an eight-speed automatic is available for the G80.

The RLX 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 G80 doesn’t offer an SMG or a conventional manual transmission.

Brakes and Stopping

The RLX stops much shorter than the G80:

 

RLX

G80

 

70 to 0 MPH

166 feet

180 feet

Car and Driver

60 to 0 MPH

112 feet

116 feet

Motor Trend

Tires and Wheels

The RLX’s tires provide better handling because they have a lower 40 series profile (height to width ratio) that provides a stiffer sidewall than the G80 3.8’s standard 45 series tires.

For better ride, handling and brake cooling the RLX has standard 19-inch wheels. Smaller 18-inch wheels are standard on the G80 3.8.

Chassis

The Acura RLX may be more efficient, handle and accelerate better because it weighs about 200 to 350 pounds less than the Genesis G80.

The RLX uses computer-generated active noise cancellation to help remove annoying noise and vibration from the passenger compartment, especially at low frequencies. The G80 doesn’t offer active noise cancellation.

Passenger Space

The RLX has .2 inches more front hip room, 1.3 inches more front shoulder room and 3.8 inches more rear legroom than the G80.

Ergonomics

The RLX’s standard easy entry system raises the steering wheel and glides the driver’s seat back, making it easier for the driver to get in and out. An easy entry system costs extra on the G80.

If the windows are left open on the RLX the driver can close them all at the outside door handle. On a hot day the driver can lower the windows at the outside door handle or from a distance using the keyless remote. The driver of the G80 can only operate the windows from inside the vehicle, with the ignition on.

Consumer Reports rated the RLX’s headlight performance “Good,” a higher rating than the G80’s headlights, which were rated “Poor.”

Standard air conditioned seats in the RLX Sport Hybrid keep the driver and front passenger comfortable and take the sting out of hot seats in summer. The G80 only offers an air-conditioned driver’s seat.

Economic Advantages

Insurance will cost less for the RLX owner. The Complete Car Cost Guide estimates that insurance for the RLX will cost $3438 less than the G80 over a five-year period.

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

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