2019 Lexus LS Series vs. 2019 Genesis G90

Detailed Review, Specifications & Comparison

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Safety

The LS Series has standard Secondary Collision Brake, which automatically apply the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The G90 doesn’t offer a post collision braking system: in the event of a collision that triggers the airbags, more collisions are possible without the protection of airbags that may have already deployed.

Over 200 people are killed each year when backed over by motor vehicles. The LS Series has a standard Auto-Stop that use rear sensors to monitor and automatically apply the brakes to prevent a rear collision. The G90 doesn’t offer backup collision prevention brakes.

Both the LS Series and the G90 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, driver alert monitors, available all wheel drive and around view monitors.

Reliability

A reliable vehicle saves its owner time, money and trouble. Nobody wants to be stranded or have to be without a vehicle while it’s being repaired. Consumer Reports rates the LS Series’ reliability 16 points higher than the G90.

From surveys of all its subscribers, Consumer Reports’ December 2018 Auto Issue reports that Lexus vehicles are more reliable than Genesis vehicles. Consumer Reports ranks Lexus first in reliability. Genesis is ranked 12th.

Engine

The LS 500’s standard 3.4 turbo V6 produces 59 lbs.-ft. more torque (442 vs. 383) than the G90 5.0’s standard 5.0 DOHC V8.

As tested in Car and Driver the LS 500 is faster than the G90 5.0:

 

LS Series

G90

Zero to 60 MPH

5.1 sec

5.3 sec

Quarter Mile

13.7 sec

13.8 sec

Fuel Economy and Range

On the EPA test cycle the LS Series gets better fuel mileage than the G90:

 

 

 

MPG

LS Series

 

RWD

500h 3.5 V6 Hybrid

25 city/33 hwy

 

 

500 3.4 turbo V6

19 city/30 hwy

 

AWD

500h 3.5 V6 Hybrid

23 city/31 hwy

 

 

500 3.4 turbo V6

18 city/27 hwy

G90

 

RWD

3.3 turbo V6

17 city/24 hwy

 

 

5.0 DOHC V8

16 city/24 hwy

 

AWD

3.3 turbo V6

17 city/24 hwy

 

 

5.0 DOHC V8

15 city/23 hwy

Regenerative brakes improve the LS Series Hybrid’s fuel efficiency by converting inertia back into energy instead of wasting it. The G90 doesn’t offer a regenerative braking system.

In heavy traffic or at stoplights the LS Series 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 G90 doesn’t offer an automatic engine start/stop system.

Transmission

A 10-speed automatic is standard on the Lexus LS Series, for better acceleration and lower engine speed on the highway. Only an eight-speed automatic is available for the G90.

The LS 500h 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 G90 doesn’t offer a CVT.

Brakes and Stopping

For better stopping power the LS Series F-Sport’s front brake rotors are larger than those on the G90:

 

LS Series F-Sport

G90 3.3T

G90 5.0

Front Rotors

15.7 inches

14.2 inches

14.8 inches

Rear Rotors

14.1 inches

13.4 inches

13.4 inches

The LS Series stops shorter than the G90:

 

LS Series

G90

 

70 to 0 MPH

170 feet

179 feet

Car and Driver

60 to 0 MPH

113 feet

122 feet

Motor Trend

Tires and Wheels

For better ride, handling and brake cooling the LS Series offers optional 20-inch wheels. The G90’s largest wheels are only 19-inches.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires standard on the LS Series can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The G90 doesn’t offer run-flat tires.

Suspension and Handling

The LS Series F-Sport offers active sway bars, which help keep it flat and controlled during cornering, but disconnect at lower speeds to smooth the ride and offer greater off-road suspension articulation. This helps keep the tires glued to the road on-road and off. The G90 doesn’t offer an active sway bar system.

The LS Series has a standard automatic front and rear load leveling suspension to keep ride height level with a heavy load or when towing. The LS Series’ height leveling suspension allows the driver to raise ride height for better off-road clearance and then lower it again for easier entering and exiting and better on-road handling. The G90 doesn’t offer a load leveling suspension.

The LS 500 handles at .88 G’s, while the G90 5.0 pulls only .83 G’s of cornering force in a Car and Driver skidpad test.

The LS 500 AWD executes Motor Trend’s “Figure Eight” maneuver 1.2 seconds quicker than the G90 3.3T AWD (25.7 seconds @ .73 average G’s vs. 26.9 seconds @ .67 average G’s).

For better maneuverability, the LS Series’ turning circle is 2.4 feet tighter than the G90’s (36.8 feet vs. 39.2 feet).

Chassis

The LS Series uses computer-generated active noise cancellation to help remove annoying noise and vibration from the passenger compartment, especially at low frequencies. The G90 doesn’t offer active noise cancellation.

Passenger Space

The LS Series has 1.1 inches more rear legroom and .1 inches more rear hip room than the G90.

Cargo Capacity

The LS Series has a much larger trunk than the G90 (17 vs. 15.7 cubic feet).

Ergonomics

If the windows are left open on the LS Series 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. (This window function must be activated by your Lexus service department.) The driver of the G90 can only operate the windows from inside the vehicle, with the ignition on.

In poor weather, headlights can lose their effectiveness as grime builds up on their lenses. This can reduce visibility without the driver realizing. The LS Series offers available headlight washers to keep headlight output high. The G90 doesn’t offer headlight washers.

The LS Series offers an optional 115-volt a/c outlet on the center console, allowing you to recharge a laptop or run small household appliances without special adapters that can break or get misplaced. The G90 doesn’t offer a house-current electrical outlet.

Recommendations

The Lexus LS Series outsold the Genesis G90 by over four to one during 2018.

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

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