2021 Lexus LC Series vs. 2020 Porsche 911

Detailed Review, Specifications & Comparison

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Safety

© 1999 - 2020 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 2020/10/21

For enhanced safety, the front and rear seat shoulder belts of the Lexus LC Series 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 Porsche 911 doesn’t offer pretensioners for the rear seat belts.

The LC 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 911 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.

The LC Series’ blind spot warning system uses digital cameras monitored by computer to alert the driver to moving objects in the vehicle’s blind spots where the side view mirrors don’t reveal them. The 911 doesn’t offer a system to reveal objects in the driver’s blind spots.

To help make backing safer, the LC Series’ cross-path warning system uses wide-angle radar in the rear bumper to alert the driver to vehicles approaching from the side, helping the driver avoid collisions. The 911 doesn’t offer a cross-path warning system.

The LC Series’ 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 911 doesn’t offer a driver alert monitor.

Both the LC Series and the 911 have standard driver and passenger frontal airbags, front side-impact airbags, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, rearview cameras and available rear parking sensors.

The Lexus LC Series weighs 550 to 1186 pounds more than the Porsche 911. The NHTSA advises that heavier cars are much safer in collisions than their significantly lighter counterparts.

Warranty

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Lexus’ powertrain warranty covers the LC Series 2 years and 20,000 miles longer than Porsche covers the 911. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 6 years or 70,000 miles. Coverage on the 911 ends after only 4 years or 50,000 miles.

There are over 26 percent more Lexus dealers than there are Porsche dealers, which makes it easier should you ever need service under the LC Series’ warranty.

Reliability

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J.D. Power and Associates’ 2020 Initial Quality Study of new car owners surveyed provide the statistics that show that Lexus vehicles are better in initial quality than Porsche vehicles. J.D. Power ranks Lexus 12th in initial quality, above the industry average. With 27 more problems per 100 vehicles, Porsche is ranked 24th, below the industry average.

J.D. Power and Associates’ 2019 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Lexus vehicles are more reliable than Porsche vehicles. J.D. Power ranks Lexus first in reliability, above the industry average. With 2 more problems per 100 vehicles, Porsche is ranked second.

From surveys of all its subscribers, Consumer Reports’ December 2019 Auto Issue reports that Lexus vehicles are more reliable than Porsche vehicles. Consumer Reports ranks Lexus first in reliability. Porsche is ranked fourth.

Fuel Economy and Range

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On the EPA test cycle the LC 500h Auto gets better fuel mileage than the 911 S Coupe RWD SMG (26 city/34 hwy vs. 18 city/24 hwy).

Regenerative brakes improve the LC Series Hybrid’s fuel efficiency by converting inertia back into energy instead of wasting it. The 911 doesn’t offer a regenerative braking system.

The LC Series’ standard fuel tank has 4.8 gallons more fuel capacity than the 911’s standard fuel tank (21.7 vs. 16.9 gallons), for longer range between fill-ups. The LC Series Hybrid’s standard fuel tank has 4.6 gallons more fuel capacity than the 911 AWD’s standard fuel tank (22.2 vs. 17.6 gallons).

Transmission

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The Lexus LC Series comes standard with an automatic transmission, for driver comfort, especially in the city. Automatic costs extra on the 911.

A 10-speed automatic is standard on the Lexus LC Series, for better acceleration and lower engine speed on the highway. Only an eight-speed automatic is available for the 911.

The LC 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 911 doesn’t offer a CVT.

Brakes and Stopping

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For better stopping power the LC Series’ standard brake rotors are larger than those on the 911:

LC Series

911

Front Rotors

15.7 inches

13 inches

Rear Rotors

14.1 inches

13 inches

Tires and Wheels

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For better traction, the LC Series has larger front tires than the 911 (245/45R20 vs. 235/40R19).

For better ride, handling and brake cooling the LC Series has standard 20-inch wheels. Smaller 19-inch front wheels are standard on the 911. The LC Series’ optional 21-inch wheels are larger than the 20-inch front wheels and 21-inch rear wheels optional on the 911.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires standard on the LC Series can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The 911 doesn’t offer run-flat tires.

Suspension and Handling

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For a smoother ride and more stable handling, the LC Series’ wheelbase is 16.5 inches longer than on the 911 (113 inches vs. 96.5 inches).

For better handling and stability, the track (width between the wheels) on the LC Series is 1.7 inches wider in the front and 2.6 inches wider in the rear than the average track on the 911.

The LC Series’ front to rear weight distribution is more even (52% to 48%) than the 911’s (36.4% to 63.6%). This gives the LC Series more stable handling and braking.

For better maneuverability, the LC Series Active Rear Steering’s turning circle is 1 foot tighter than the 911 w/Rear Wheel Steering’s (34.8 feet vs. 35.8 feet). The LC Series’ turning circle is 1.4 feet tighter than the 911’s (35.4 feet vs. 36.8 feet).

Chassis

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The LC Series Convertible uses computer-generated active noise cancellation to help remove annoying noise and vibration from the passenger compartment, especially at low frequencies. The 911 doesn’t offer active noise cancellation.

As tested by Car and Driver, the interior of the LC 500h is quieter than the 911 S Coupe:

LC Series

911

At idle

42 dB

52 dB

Full-Throttle

83 dB

94 dB

70 MPH Cruising

71 dB

75 dB

Passenger Space

© 1999 - 2020 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 2020/10/21

Because it has more passenger and cargo room, the EPA rates the LC Series Coupe a Subcompact car, while the 911 Coupe is rated a Minicompact.

The LC Series has 12.9 cubic feet more passenger volume than the 911 (85.9 vs. 73).

The LC Series has 3.9 inches more front shoulder room, 5.3 inches more rear legroom and 1 inch more rear shoulder room than the 911 Coupe.

Cargo Capacity

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The LC Series has a larger trunk than the 911 Coupe with its rear seat up (5.4 vs. 4.6 cubic feet).

With its coupe body style, valet key and remote trunk release lockout, the LC Series offers cargo security. The 911’s non-lockable folding seat defeats cargo security.

Ergonomics

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The LC Series 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 911 doesn’t offer a remote starting system.

The LC Series’ standard easy entry system raises the steering wheel, making it easier for the driver to get in and out. An easy entry system costs extra on the 911.

The LC Series 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 911 doesn’t offer a heads-up display.

The LC Series’ standard power windows have a locking feature to keep children from operating them, but the driver can still raise and lower both of them with the lock engaged. Porsche does not offer a locking feature on the 911’s standard power windows.

If the front windows are left open on the LC Series the driver can close them 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 911 can only operate the windows from inside the vehicle, with the ignition on.

Recommendations

© 1999 - 2020 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 2020/10/21

The LC Series was chosen as one of Automobile Magazine’s “All Stars” in 2018. The 911 has never been an “All Star.”

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

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