2019 Genesis G80 vs. 2019 Cadillac CT6

Detailed Review, Specifications & Comparison

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Safety

For enhanced safety, the front and rear seat shoulder belts of the Genesis G80 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 Cadillac CT6 doesn’t offer pretensioners for the rear seat belts.

For enhanced safety, the front and rear seat shoulder belts of the Genesis G80 are height-adjustable to accommodate a wide variety of driver and passenger heights. A better fit can prevent injuries and the increased comfort also encourages passengers to buckle up. The Cadillac CT6 has only front height-adjustable seat belts.

The G80’s 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 CT6 doesn’t offer a driver alert monitor.

Both the G80 and the CT6 have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, 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 28 vehicles tested by the IIHS. The CT6 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 CT6’s 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 Cadillac covers the CT6. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 10 years or 100,000 miles. Coverage on the CT6 ends after only 6 years or 70,000 miles.

The G80’s corrosion warranty is 1 year longer than the CT6’s (7 vs. 6 years).

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 G80’s reliability 30 points higher than the CT6.

J.D. Power and Associates rated the G80 second among midsize premium cars in their 2018 Initial Quality Study. The CT6 isn’t in the top three in its category.

J.D. Power and Associates’ 2018 Initial Quality Study of new car owners surveyed provide the statistics that show that Genesis vehicles are better in initial quality than Cadillac vehicles. J.D. Power ranks Genesis first in initial quality, above the industry average. With 22 more problems per 100 vehicles, Cadillac is ranked 12th.

Engine

As tested in Motor Trend the G80 3.8 is faster than the Cadillac CT6 turbo 4 cyl.:

 

G80

CT6

Zero to 60 MPH

6.3 sec

6.4 sec

Quarter Mile

14.6 sec

14.7 sec

Speed in 1/4 Mile

97 MPH

92.8 MPH

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 CT6 with the 3.0 turbo V6 engine requires premium, which can cost 20 to 55 cents more per gallon.

Brakes and Stopping

For better stopping power the G80’s brake rotors are larger than those on the CT6:

 

G80 3.8

G80 3.3T Sport

CT6 2.0

CT6 V6

Front Rotors

13.6 inches

14.2 inches

12.6 inches

13.6 inches

Rear Rotors

12.4 inches

13 inches

12.4 inches

12.4 inches

The G80 stops shorter than the CT6:

 

G80

CT6

 

60 to 0 MPH

114 feet

117 feet

Motor Trend

Tires and Wheels

For better traction, the G80 has larger standard tires than the CT6 (245/45R18 vs. 235/50R18).

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 CT6’s standard 50 series tires. The G80’s optional 275/35R19 rear tires have a lower 35 series profile than the CT6’s optional 40 series tires.

Suspension and Handling

The G80 5.0 handles at .88 G’s, while the CT6 pulls only .82 G’s of cornering force in a Motor Trend skidpad test.

The G80 3.8 AWD executes Motor Trend’s “Figure Eight” maneuver quicker than the CT6 (26.2 seconds @ .69 average G’s vs. 26.7 seconds @ .66 average G’s).

For better maneuverability, the G80’s turning circle is 3.8 feet tighter than the CT6’s (36.2 feet vs. 40 feet). The G80’s turning circle is 2.6 feet tighter than the CT6’s (37.4 feet vs. 40 feet).

Chassis

The G80 is 9.3 inches shorter than the CT6, making the G80 easier to handle, maneuver and park in tight spaces.

As tested by Car and Driver, the interior of the G80 5.0 is quieter than the CT6 AWD:

 

G80

CT6

At idle

39 dB

49 dB

Passenger Space

The G80 has .9 inches more front headroom, .2 inches more rear headroom, 1.3 inches more rear hip room and .9 inches more rear shoulder room than the CT6.

Cargo Capacity

A low lift-over trunk design makes loading and unloading the G80 easier. The G80’s trunk lift-over height is 27.5 inches, while the CT6’s liftover is 29.1 inches.

A standard locking glovebox (which can’t be accessed with the valet key) keeps your small valuables safer in the G80. The CT6 doesn’t offer locking storage for small valuables.

Ergonomics

In poor weather, headlights can lose their effectiveness as grime builds up on their lenses. This can reduce visibility without the driver realizing. The G80 3.8 AWD offers available headlight washers to keep headlight output high. The CT6 doesn’t offer headlight washers.

The CT6 Premium Luxury/Platinum/Sport’s cornering lamps activate a lamp on the front corner when the turn signal is activated. The G80’s optional adaptive cornering lights turn the actual headlight unit up to several degrees, depending on steering wheel angle and vehicle speed. This lights a significant distance into corners at any speed.

Economic Advantages

Insurance will cost less for the G80 owner. The Complete Car Cost Guide estimates that insurance for the G80 will cost $1170 less than the CT6 over a five-year period.

The G80 will cost the buyer less in the long run because of its superior resale value. The IntelliChoice estimates that the G80 will retain 40.26% to 44.12% of its original price after five years, while the CT6 only retains -5.72% to 36.79%.

IntelliChoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the Genesis G80 will be $15596 to $24939 less than for the Cadillac CT6.

Recommendations

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

The Genesis G80 outsold the Cadillac CT6 by 16% during the 2018 model year.

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

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