2019 Infiniti Q70 vs. 2018 Lexus GS Series

Detailed Review, Specifications & Comparison

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Safety

© 1999 - 2019 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2019/10/21

The Q70’s optional pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The GS Series doesn’t offer pre-crash pretensioners.

Over 200 people are killed each year when backed over by motor vehicles. The Q70 offers optional Backup Collision Intervention which use rear sensors to monitor and automatically apply the brakes to prevent a rear collision. The GS Series doesn’t offer backup collision prevention brakes.

The Q70 has a standard Around View® Monitor to allow the driver to see objects all around the vehicle on a screen. The GS Series 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.

Both the Q70 and the GS Series have standard driver and passenger frontal airbags, front side-impact 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, daytime running lights, rearview cameras, available all wheel drive, crash mitigating brakes, lane departure warning systems, blind spot warning systems and rear cross-path warning.

For its top level performance in all IIHS frontal, side, rear impact and roof-crush tests, and with its optional front crash prevention system, the Insurance Institute for Highway Safety grants the Q70 the rating of “Top Pick” for 2017, a rating granted to only 149 vehicles tested by the IIHS. The GS Series has not been fully tested, yet.

Warranty

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The Q70 comes with a full 4-year/60,000-mile basic warranty, which covers the entire car and includes 24-hour roadside assistance. The GS Series’ 4-year/50,000-mile basic warranty expires 10,000 miles sooner.

The Q70’s corrosion warranty is 1 year longer than the GS Series’ (7 vs. 6 years).

Reliability

© 1999 - 2019 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2019/10/21

A hardened steel chain, with no maintenance needs, drives the camshafts in the Q70’s engine. A rubber belt that needs periodic replacement drives the GS 300’s camshafts. If the GS Series’ cam drive belt breaks the engine could be severely damaged when the pistons hit the opened valves.

Engine

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The Q70 has more powerful engines than the GS Series:

 

Horsepower

Torque

Q70 3.7 LUXE 3.7 DOHC V6

330 HP

270 lbs.-ft.

Q70 5.6 LUXE 5.6 DOHC V8

420 HP

417 lbs.-ft.

GS 300 2.0 turbo 4 cyl.

241 HP

258 lbs.-ft.

GS 350 3.5 DOHC V6

311 HP

280 lbs.-ft.

GS 450h 3.5 DOHC V6 hybrid

338 HP

n/a

As tested in Consumer Reports the Q70 3.7 LUXE is faster than the GS 350:

 

Q70

GS Series

Zero to 30 MPH

2.3 sec

2.6 sec

Zero to 60 MPH

5.8 sec

6.2 sec

Quarter Mile

14.2 sec

14.7 sec

Speed in 1/4 Mile

101.2 MPH

99 MPH

As tested in Motor Trend the Q70 5.6 LUXE is faster than the GS 450h:

 

Q70

GS Series

Zero to 60 MPH

4.8 sec

6 sec

Quarter Mile

13.3 sec

14.4 sec

Speed in 1/4 Mile

108.5 MPH

101.8 MPH

Fuel Economy and Range

© 1999 - 2019 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2019/10/21

The Q70 has 2.6 gallons more fuel capacity than the GS Series (20 vs. 17.4 gallons), for longer range between fill-ups.

Brakes and Stopping

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The Q70 stops much shorter than the GS Series:

 

Q70

GS Series

 

70 to 0 MPH

164 feet

174 feet

Car and Driver

60 to 0 MPH

108 feet

119 feet

Motor Trend

60 to 0 MPH (Wet)

143 feet

147 feet

Consumer Reports

Tires and Wheels

© 1999 - 2019 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2019/10/21

For better traction, the Q70 has larger tires than the GS Series (245/40R20 vs. 235/45R18). The Q70’s optional tires are larger than the largest tires available on the GS Series (245/40R20 vs. 235/40R19).

For better ride, handling and brake cooling the Q70 has standard 18-inch wheels. Smaller 17-inch wheels are standard on the GS 300. The Q70’s optional 20-inch wheels are larger than the 19-inch wheels optional on the GS Series.

Suspension and Handling

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For a smoother ride and more stable handling, the Q70’s wheelbase is 2 inches longer than on the GS Series (114.2 inches vs. 112.2 inches). The Q70L’s wheelbase is 7.9 inches longer than on the GS Series (120.1 inches vs. 112.2 inches).

The Q70 3.7 LUXE executes Motor Trend’s “Figure Eight” maneuver 1 seconds quicker than the GS 450h (25.9 seconds @ .7 average G’s vs. 26.9 seconds @ .68 average G’s).

Chassis

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The Q70 uses computer-generated active noise cancellation to help remove annoying noise and vibration from the passenger compartment, especially at low frequencies. The GS Series doesn’t offer active noise cancellation.

As tested by Road and Track, the interior of the Q70 5.6 LUXE is quieter than the GS 350:

 

Q70

GS Series

At idle

42 dB

55 dB

Full-Throttle

78 dB

78 dB

50 MPH Cruising

69 dB

73 dB

70 MPH Cruising

72 dB

74 dB

Passenger Space

© 1999 - 2019 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2019/10/21

The Q70 has 4.6 cubic feet more passenger volume than the GS Series (103.6 vs. 99).

The Q70 has 1.1 inches more front headroom, 2.1 inches more front legroom, 1.1 inches more front shoulder room and 1 inch more rear shoulder room than the GS Series.

Servicing Ease

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A maintenance reminder system is standard on the Q70 to save the owner time and money by calculating maintenance intervals for oil changes and tire rotation based on odometer mileage. This takes the guesswork out of keeping your vehicle in top condition and helps it last longer. Lexus doesn’t offer a maintenance reminder on the GS Series.

J.D. Power and Associates surveys of service recipients show that Infiniti service is better than Lexus. J.D. Power ranks Infiniti first in service department satisfaction. With a 5% lower rating, Lexus is ranked third.

Ergonomics

© 1999 - 2019 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2019/10/21

The Q70’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 GS Series’ standard manually variable intermittent wipers have to be constantly adjusted.

Economic Advantages

© 1999 - 2019 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2019/10/21

Insurance will cost less for the Q70 owner. The Complete Car Cost Guide estimates that insurance for the Q70 will cost $1485 less than the GS Series over a five-year period.

According to The Car Book by Jack Gillis, the Q70 is less expensive to operate than the GS Series because typical repairs cost much less on the Q70 than the GS Series, including $383 less for a starter, $350 less for fuel injection, $7 less for a fuel pump, $459 less for a timing belt/chain and $190 less for a power steering pump.

Recommendations

© 1999 - 2019 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2019/10/21

Consumer Reports® recommends both the Infiniti Q70 and the Lexus GS Series, based on reliability, safety and performance.

J.D. Power and Associates rated the Q70 second among midsize premium cars in owner reported satisfaction. This includes how well the vehicle performs and satisfies its owner’s expectations. The GS Series isn’t in the top three.

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

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