2018 Genesis G80 vs. 2018 Lexus LS Series

Detailed Review, Specifications & Comparison

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Safety

The G80’s pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The LS Series doesn’t offer pre-crash pretensioners.

Both the G80 and the LS Series have standard driver and passenger frontal airbags, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, lane departure warning systems, rearview cameras, available all-wheel drive and rear parking sensors.

For its top level performance in IIHS driver-side small overlap frontal, moderate overlap frontal, side impact, rear impact and roof-crush tests, with its optional front crash prevention system, its “Good” rating in the new passenger-side small overlap crash test, and its headlight’s “Good” rating, the Insurance Institute for Highway Safety grants the G80 its highest rating: “Top Pick Plus” for 2018, a rating granted to only 20 vehicles tested by the IIHS. The LS Series has not been tested, yet.

Warranty

The G80 comes with a full 5-year/60,000-mile basic warranty, which covers the entire car and includes free 24-hour roadside assistance. The LS Series’ 4-year/50,000-mile basic warranty expires 1 year and 10,000 miles sooner.

Genesis’ powertrain warranty covers the G80 4 years and 30,000 miles longer than Lexus covers the LS Series. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 10 years or 100,000 miles. Coverage on the LS Series ends after only 6 years or 70,000 miles.

The G80’s corrosion warranty is 1 year longer than the LS Series’ (7 vs. 6 years).

Genesis pays for scheduled maintenance on the G80 for 3 years and 36,000 miles. Genesis will pay for oil changes, lubrication and any other required maintenance. Lexus only pays for the first scheduled maintenance visit on the LS Series.

There are over 48 percent more Genesis dealers than there are Lexus dealers, which makes it easier should you ever need service under the G80’s warranty.

Reliability

J.D. Power and Associates’ 2017 Initial Quality Study of new car owners surveyed provide the statistics that show that Genesis vehicles are better in initial quality than Lexus vehicles. J.D. Power ranks Genesis second in initial quality, above the industry average. With 21 more problems per 100 vehicles, Lexus is ranked 15th, below the industry average.

Engine

The G80 5.0’s 5.0 DOHC V8 produces 4 more horsepower (420 vs. 416) than the LS 500’s optional 3.4 turbo V6.

As tested in Car and Driver the G80 3.3T Sport 3.3 turbo V6 is faster than the LS 500 3.4 turbo V6:

 

G80

LS Series

Zero to 60 MPH

5 sec

5.1 sec

Zero to 100 MPH

12.5 sec

12.7 sec

5 to 60 MPH Rolling Start

5.7 sec

6.3 sec

Quarter Mile

13.6 sec

13.7 sec

Fuel Economy and Range

To lower fuel costs and make buying fuel easier, the Genesis G80 uses regular unleaded gasoline (premium recommended on G80 3.3T Sport for maximum performance). The LS Series requires premium, which can cost 20 to 55 cents more per gallon.

Brakes and Stopping

The G80 stops shorter than the LS Series:

 

G80

LS Series

 

70 to 0 MPH

167 feet

170 feet

Car and Driver

Tires and Wheels

The G80 3.8’s standard tires provide better handling because they have a lower 45 series profile (height to width ratio) that provides a stiffer sidewall than the LS Series’ standard 50 series tires. The G80 5.0/3.3T Sport’s 245/40R19 front and 275/35R19 rear tires have a lower 40 series front and 35 series rear profile than the LS Series F Sport’s 45 series front and 40 series rear tires.

Suspension and Handling

The G80 5.0 handles at .88 G’s, while the LS 500 AWD pulls only .85 G’s of cornering force in a Motor Trend skidpad test.

For better maneuverability, the G80’s turning circle is 1.2 feet tighter than the LS Series’ (36.2 feet vs. 37.4 feet). The G80’s turning circle is 2 feet tighter than the LS Series AWD’s (37.4 feet vs. 39.4 feet).

Chassis

The Genesis G80 may be more efficient, handle and accelerate better because it weighs about 400 to 500 pounds less than the Lexus LS Series.

The G80 is 9.6 inches shorter than the LS Series, making the G80 easier to handle, maneuver and park in tight spaces.

The design of the Genesis G80 amounts to more than styling. The G80 has an aerodynamic coefficient of drag of .27 Cd. That is lower than the LS Series (.27 to .28) and many sports cars. A more efficient exterior helps keep the interior quieter and helps the G80 get better fuel mileage.

Passenger Space

Because it has more passenger and cargo room, the G80 is rated a Large car by the EPA, while the LS Series is rated a Mid-size.

The G80 has 8.3 cubic feet more passenger volume than the LS Series (107.7 vs. 99.4).

The G80 has 3.8 inches more front headroom, 4.7 inches more front legroom, .2 inches more front hip room, .9 inches more rear headroom and .7 inches more rear shoulder room than the LS Series.

Ergonomics

The G80’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 LS Series’

Recommendations

Consumer Reports® recommends the Genesis G80, based on reliability, safety and performance.

A group of representative automotive journalists from North America selected the G80 as the 2009 North American Car of the Year. The LS Series has never been chosen.

The Genesis G80 outsold the Lexus LS Series by almost four to one during 2017.

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

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