2020 Honda Civic Si vs. 2020 Nissan 370Z

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 2019/10/18

For enhanced safety, the front seat shoulder belts of the Honda Civic Si Sedan 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 Nissan 370Z doesn’t offer height-adjustable seat belts.

Using vehicle speed sensors and seat sensors, smart airbags in the Civic Si deploy with different levels of force or don’t deploy at all to help better protect passengers of all sizes in different collisions. The Civic Si’s side airbags will shut off if a child is leaning against the door. The 370Z’s airbags don’t have smart features and will always deploy full force.

The Civic Si has standard Collision Mitigation Braking System, which use forward mounted sensors to warn the driver of a possible collision ahead. If the driver doesn’t react and the system determines a collision is imminent, it automatically applies the brakes at full-force in order to reduce the force of the crash or avoid it altogether. The 370Z doesn't offer collision warning or crash mitigation brakes.

The Civic Si’s lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane and gently nudges the vehicle back towards its lane. The 370Z doesn’t offer a lane departure warning system.

The Civic Si’s blind spot mirrors use wide-angle convex mirrors mounted in the corner of each side view mirror to reveal objects that may be in the driver’s blind spots. The 370Z doesn’t offer a system to reveal objects in the driver’s blind spots.

Compared to metal, the Civic Si’s plastic fuel tank can withstand harder, more intrusive impacts without leaking; this decreases the possibility of fire. The Nissan 370Z has a metal gas tank.

The Civic Si has standard HondaLink Assist, which uses a global positioning satellite (GPS) receiver and a cellular system to send emergency personnel to the scene if any airbags deploy. The 370Z doesn’t offer a GPS response system, only a navigation computer with no live response for emergencies, so if you’re involved in an accident and you’re incapacitated help may not come as quickly.

Both the Civic Si and the 370Z have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front seatbelt pretensioners, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights and rearview cameras.

Reliability

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The 370Z’s redline is at 7500 RPM, which causes more engine wear, and a greater chance of a catastrophic engine failure. The Civic Si has a 6500 RPM redline.

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 Civic Si’s reliability 12 points higher than the 370Z.

Fuel Economy and Range

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On the EPA test cycle the Civic Si gets better fuel mileage than the 370Z:

MPG

Civic Si

Manual

1.5 turbo 4-cyl.

26 city/36 hwy

370Z

Manual

3.7 DOHC V6

17 city/26 hwy

NISMO 3.7 DOHC V6

17 city/26 hwy

Auto

3.7 DOHC V6

19 city/26 hwy

NISMO 3.7 DOHC V6

19 city/26 hwy

To lower fuel costs and make buying fuel easier, the Honda Civic Si uses regular unleaded gasoline (premium recommended for maximum performance). The 370Z requires premium, which can cost 20 to 55 cents more per gallon.

The Civic Si has a standard cap-less fueling system. The fuel filler is automatically opened when the fuel nozzle is inserted and automatically closed when it’s removed. This eliminates the need to unscrew and replace the cap and it reduces fuel evaporation, which causes pollution. The 370Z doesn’t offer a cap-less fueling system.

Transmission

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A standard “hill holder” feature keeps the Honda Civic Si from rolling backwards on a steep slope. The 370Z doesn’t offer a hill holder feature.

Brakes and Stopping

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The Civic Si stops shorter than the 370Z:

Civic Si

370Z

70 to 0 MPH

159 feet

163 feet

Car and Driver

60 to 0 MPH

106 feet

111 feet

Motor Trend

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 2019/10/18

For better traction, the Civic Si has larger tires than the 370Z (235/40R18 vs. 225/50R18).

The Civic Si’s standard tires provide better handling because they have a lower 40 series profile (height to width ratio) that provides a stiffer sidewall than the 370Z’s standard 50 series front and 45 series rear tires. The Civic Si’s optional tires have a lower 35 series profile than the 370Z Sport/Sport Touring’s 40 series front tires.

Suspension and Handling

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The Civic Si has a standard 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 370Z’s suspension doesn’t offer adjustable shock absorbers.

The Civic Si’s drift compensation steering can automatically compensate for road conditions which would cause the vehicle to drift from side to side, helping the driver to keep the vehicle straight more easily. The 370Z doesn’t offer drift compensation steering.

For a smoother ride and more stable handling, the Civic Si’s wheelbase is 5.9 inches longer than on the 370Z (106.3 inches vs. 100.4 inches).

The Civic Si Coupe handles at .97 G’s, while the 370Z pulls only .91 G’s of cornering force in a Car and Driver skidpad test.

Chassis

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The Honda Civic Si may be more efficient, handle and accelerate better because it weighs about 450 to 550 pounds less than the Nissan 370Z.

As tested by Car and Driver, the interior of the Civic Si Coupe is quieter than the 370Z:

Civic Si

370Z

At idle

40 dB

49 dB

Full-Throttle

84 dB

89 dB

70 MPH Cruising

72 dB

72 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 2019/10/18

The Civic Si has standard seating for 5 passengers; the 370Z can only carry 2.

The Civic Si Coupe has 37 cubic feet more passenger volume than the 370Z (88.6 vs. 51.6).

Cargo Capacity

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The Civic Si Coupe has a much larger trunk than the 370Z (11.9 vs. 6.9 cubic feet).

A low lift-over trunk design makes loading and unloading the Civic Si easier. The Civic Si’s trunk lift-over height is 26.8 inches, while the 370Z’s liftover is 35.6 inches.

Servicing Ease

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The Civic Si has a maintenance free battery for long life without checking the battery’s water level. The 370Z doesn’t have a maintenance free battery, so the water level in the battery’s cells must be checked often to prevent damage.

Ergonomics

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To help each driver find a more comfortable driving position, the Civic Si has a telescoping steering wheel. Much better than just a tilt steering wheel or adjustable seat, this allows a short driver to sit further from the steering wheel while maintaining contact with the pedals. The 370Z doesn’t offer a telescoping steering wheel.

The Civic Si’s power parking brake sets with one touch and releases with one touch or automatically. The 370Z has a lever-type parking brake that has to be strenuously raised to engage properly. It has to be lifted up more and a button depressed to release it.

While driving with high beams on, sensitive light sensors standard on the Civic Si detect other vehicles which could be blinded and automatically switch to low beams. The 370Z doesn’t offer automatic dimming high beams.

The Civic Si’s standard outside mirrors include heating elements to clear off the mirrors for better visibility. Nissan only offers heated mirrors on the 370Z Sport/Sport Touring/NISMO.

The Civic Si’s standard dual zone air conditioning allows the driver and front passenger to choose two completely different temperatures so people with different temperature preferences won’t have to compromise. This makes both the driver and front passenger as comfortable as possible. The 370Z doesn’t offer dual zone air conditioning.

To keep a safe, consistent following distance, the Civic Si has a standard Adaptive Cruise Control, which alters the speed of the vehicle without driver intervention. This allows the driver to use cruise control more safely without constantly having to disengage it when approaching slower traffic. The 370Z doesn’t offer an adaptive cruise control.

Model Availability

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The Honda Civic Si comes in coupe and sedan bodystyles; the Nissan 370Z isn’t available as a sedan.

Economic Advantages

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Insurance will cost less for the Civic Si owner. The Complete Car Cost Guide estimates that insurance for the Civic Si will cost $520 less than the 370Z over a five-year period.

The Civic Si will cost the buyer less in the long run because of its superior resale value. The IntelliChoice estimates that the Civic Si will retain 54.01% to 55.27% of its original price after five years, while the 370Z only retains 40.39% to 47.23%.

According to The Car Book by Jack Gillis, the Civic Si is less expensive to operate than the 370Z because it costs $167 less to do the manufacturer’s suggested maintenance for 50,000 miles. Typical repairs cost much less on the Civic Si than the 370Z, including $360 less for a water pump, $266 less for a muffler, $15 less for front brake pads, $162 less for fuel injection, $368 less for front struts, $181 less for a timing belt/chain and $405 less for a power steering pump.

IntelliChoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the Honda Civic Si will be $12591 to $33835 less than for the Nissan 370Z.

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 2019/10/18

Consumer Reports® recommends both the Honda Civic Si and the Nissan 370Z, based on reliability, safety and performance.

The Civic Si was chosen as one of Car and Driver’s “Top Ten” for 2 of the last 2 years. The 370Z has never been a Car and Driver “Top Ten” pick.

The Civic was chosen as one of Automobile Magazine’s “All Stars” for 2 of the last 23 years. The 370Z has never been an “All Star.”

A group of representative automotive journalists from North America selected the Civic as the 2016 North American Car of the Year. The 370Z has never been chosen.

The Honda Civic outsold the Nissan 370Z by almost 94 to one during 2018.

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

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