2019 Genesis G80 vs. 2019 Infiniti Q70

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 Infiniti Q70 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 Infiniti Q70 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 Q70 doesn’t offer a driver alert monitor.

Both the G80 and the Q70 have standard driver and passenger frontal airbags, front side-impact 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.

The National Highway Traffic Safety Administration does 35 MPH front crash tests on new vehicles. In this test, results indicate that the Genesis G80 is safer than the Infiniti Q70:

 

G80

Q70

OVERALL STARS

5 Stars

4 Stars

 

Driver

STARS

5 Stars

5 Stars

HIC

97

212

Neck Stress

189 lbs.

191 lbs.

Leg Forces (l/r)

268/514 lbs.

732/502 lbs.

 

Passenger

STARS

5 Stars

4 Stars

Chest Compression

.4 inches

1 inches

Neck Injury Risk

35%

35%

Neck Stress

129 lbs.

166 lbs.

Neck Compression

44 lbs.

65 lbs.

Leg Forces (l/r)

147/55 lbs.

602/540 lbs.

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 Genesis G80 is safer than the Infiniti Q70:

 

G80

Q70

 

Rear Seat

STARS

5 Stars

5 Stars

HIC

88

322

Spine Acceleration

31 G’s

49 G’s

Hip Force

394 lbs.

653 lbs.

 

Into Pole

STARS

5 Stars

5 Stars

Max Damage Depth

10 inches

19 inches

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

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 Q70 was last qualified as only a “Top Pick” in 2017.

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 Q70’s 4-year/60,000-mile basic warranty expires 1 year sooner.

Genesis’ powertrain warranty covers the G80 4 years and 30,000 miles longer than Infiniti covers the Q70. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 10 years or 100,000 miles. Coverage on the Q70 ends after only 6 years or 70,000 miles.

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. Infiniti doesn’t pay scheduled maintenance for the Q70.

There are over 66 percent more Genesis dealers than there are Infiniti dealers, which makes it much easier should you ever need service under the G80’s warranty.

Reliability

The battery on the G80 is in the trunk, which protects it from hot underhood temperatures that can degrade battery life. By keeping the G80’s battery 20 to 30 degrees cooler, its life is increased by years. The Q70’s battery is in the hot engine compartment.

J.D. Power and Associates rated the G80 second among midsize premium cars in their 2018 Initial Quality Study. The Q70 isn’t in the top three.

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 Infiniti vehicles. J.D. Power ranks Genesis first in initial quality, above the industry average. With 24 more problems per 100 vehicles, Infiniti is ranked 14th.

Engine

The G80 has more powerful engines than the Q70:

 

Torque

G80 3.8 DOHC V6

293 lbs.-ft.

G80 3.3T Sport 3.3 turbo V6

376 lbs.-ft.

Q70 3.7 LUXE 3.7 DOHC V6

270 lbs.-ft.

As tested in Car and Driver the G80 3.3T Sport is faster than the Q70 3.7:

 

G80

Q70

Zero to 60 MPH

5 sec

5.6 sec

Zero to 100 MPH

12.5 sec

13.9 sec

5 to 60 MPH Rolling Start

5.7 sec

5.8 sec

Quarter Mile

13.6 sec

14.1 sec

Speed in 1/4 Mile

104 MPH

101 MPH

Fuel Economy and Range

On the EPA test cycle the G80 gets better fuel mileage than the Q70:

 

 

G80

Q70

 

RWD

3.8/Auto

18 city/26 hwy

18 city/25 hwy

3.7/Auto

 

3.3T/Auto

17 city/25 hwy

16 city/24 hwy

5.6/Auto

AWD

3.8/Auto

18 city/24 hwy

18 city/24 hwy

3.7/Auto

 

3.3T/Auto

17 city/24 hwy

16 city/23 hwy

5.6/Auto

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 Q70 requires premium, which can cost 20 to 55 cents more per gallon.

Transmission

An eight-speed automatic is standard on the Genesis G80, for better acceleration and lower engine speed on the highway. Only a seven-speed automatic is available for the Q70.

Brakes and Stopping

For better stopping power the G80’s brake rotors are larger than those on the Q70:

 

G80 3.8

G80 3.3T

Q70

Q70 Sport

Front Rotors

13.6 inches

14.2 inches

12.6 inches

14 inches

Rear Rotors

12.4 inches

13 inches

12.1 inches

13.8 inches

The G80 stops shorter than the Q70:

 

G80

Q70

 

70 to 0 MPH

167 feet

171 feet

Car and Driver

60 to 0 MPH

114 feet

116 feet

Motor Trend

60 to 0 MPH (Wet)

137 feet

143 feet

Consumer Reports

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 Q70’s standard 50 series tires. The G80’s optional 275/35R19 rear tires have a lower 35 series profile than the Q70’s optional 40 series tires.

Suspension and Handling

The G80 has standard front and rear gas-charged shocks for better control over choppy roads. The Q70’s suspension doesn’t offer gas-charged shocks.

The G80 offers an available driver-adjustable suspension system. It allows the driver to choose between an extra-supple ride, reducing fatigue on long trips, or a sport setting, which allows maximum control for tricky roads. The Q70’s suspension doesn’t offer adjustable shock absorbers.

For a smoother ride and more stable handling, the G80’s wheelbase is 4.3 inches longer than on the Q70 (118.5 inches vs. 114.2 inches).

For better handling and stability, the average track (width between the wheels) on the G80 is 1.9 inches wider in the front and 3.1 inches wider in the rear than the average track on the Q70.

The G80 5.0 handles at .86 G’s, while the Q70 3.7 LUXE pulls only .82 G’s of cornering force in a Car and Driver skidpad test.

The G80 3.8 AWD executes Motor Trend’s “Figure Eight” maneuver quicker than the Q70 5.6 LUXE AWD (26.2 seconds @ .69 average G’s vs. 26.7 seconds @ .67 average G’s).

Chassis

As tested by AutoWeek, the interior of the G80 3.8 AWD is quieter than the Q70 5.6 LUXE:

 

G80

Q70

At idle

39.5 dB

42 dB

Full-Throttle

71.3 dB

78 dB

60 MPH Cruising

58.3 dB

69 dB

Passenger Space

Because it has more passenger and cargo room, the EPA rates the G80 a Large car, while the Q70 is rated a Mid-size.

The G80 has 4.1 cubic feet more passenger volume than the Q70 (107.7 vs. 103.6).

The G80 has 2 inches more front headroom, 1.3 inches more front legroom, 1.4 inches more front hip room, .5 inches more rear headroom, 1.3 inches more rear hip room and .4 inches more rear shoulder room than the Q70.

Cargo Capacity

The G80 has a larger trunk than the Q70 (15.3 vs. 14.9 cubic feet).

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 Q70’s liftover is 29.1 inches.

To make loading and unloading groceries and cargo easier when your hands are full, just waiting momentarily behind the back bumper can open the G80’s trunk, leaving your hands completely free. The G80 also offers an optional power trunk, which opens and closes automatically by pressing a button. The Q70 doesn’t offer a power or hands-free opening trunk.

Servicing Ease

The G80 has a maintenance free battery for long life without checking the battery’s water level. The Q70 doesn’t have a maintenance free battery, so the water level in the battery’s cells must be checked often to prevent damage.

Ergonomics

The G80 has a standard remote vehicle starting system, so the vehicle can be started from inside the driver's house. This allows the driver to comfortably warm up the engine before going out to the vehicle. The climate system will also automatically heat or cool the interior. The Q70 doesn’t offer a remote starting system.

The G80 offers an optional heads-up display that projects speed and other key instrumentation readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The Q70 doesn’t offer a heads-up display.

The power windows standard on both the G80 and the Q70 have locks to prevent small children from operating them. When the lock on the G80 is engaged the driver can still operate all of the windows, for instance to close one opened by a child. The Q70 prevents the driver from operating the other windows just as it does the other passengers.

The G80’s front and rear power windows all open or close fully with one touch of the switches, making it more convenient at drive-up windows and toll booths, or when talking with someone outside the car. The Q70’s rear power window switches have to be held the entire time to open or close them fully.

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 Q70 doesn’t offer headlight washers.

While driving with high beams on, sensitive light sensors standard on the G80 detect other vehicles which could be blinded and automatically switch to low beams. The Q70 doesn’t offer automatic dimming high beams.

Standard smartphone integration for the G80 allows the driver and passengers access to select programs on their smartphones, including reading text messages aloud, playing internet radio stations, finding fuel prices at nearby service stations, searching the internet, following twitter accounts and other connected activities without taking their eyes off the road or their hands from the wheel. The Q70 doesn’t offer factory integrated smartphone program access.

Economic Advantages

Insurance will cost less for the G80 owner. The Car Book by Jack Gillis rates the G80 with a number “” insurance rate while the Q70 is rated higher at a number “5” rate.

IntelliChoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the Genesis G80 will be $4938 to $11772 less than for the Infiniti Q70.

Recommendations

Consumer Reports® recommends both the Genesis G80 and the Infiniti Q70, based on reliability, safety and performance.

The Genesis G80 outsold the Infiniti Q70 by over two to one during the 2018 model year.

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

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