2019 Honda Civic Si vs. 2019 Nissan 370Z

Detailed Review, Specifications & Comparison

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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 side airbags don’t have smart features and will always deploy full force.

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.

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 Civic Si the rating of “Top Pick” for 2017, a rating granted to only 139 vehicles tested by the IIHS. The 370Z has not been tested, yet.


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.

From surveys of all its subscribers, Consumer Reports’ April 2018 Auto Issue reports that Honda vehicles are more reliable than Nissan vehicles. Consumer Reports ranks Honda 2 places higher in reliability than Nissan.

Fuel Economy and Range

On the EPA test cycle the Civic Si gets better fuel mileage than the 370Z Coupe Manual (28 city/38 hwy vs. 17 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.


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

The Civic Si stops shorter than the 370Z:


Civic Si



70 to 0 MPH

159 feet

163 feet

Car and Driver

60 to 0 MPH

106 feet

111 feet

Motor Trend

Tires and Wheels

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

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 Coupe pulls only .91 G’s of cornering force in a Car and Driver skidpad test.


The Honda Civic Si may be more efficient, handle and accelerate better because it weighs about 450 to 600 pounds less than the Nissan 370Z.

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


Civic Si


At idle

40 dB

49 dB


84 dB

89 dB

70 MPH Cruising

72 dB

72 dB

Passenger Space

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

The Civic Si Coupe has a much larger trunk than the 370Z Coupe (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

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.


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 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.

Standard HondaLink for the Civic Si allows the driver and passengers access to select programs on their smartphones, including reading text messages aloud, playing internet radio stations, searching the internet and other connected activities without taking their eyes off the road or their hands from the wheel. The 370Z doesn’t offer factory integrated smartphone program access.

Economic Advantages

Insurance will cost less for the Civic Si owner. The Complete Car Cost Guide estimates that insurance for the Civic Si will cost $565 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 52.64% to 54.77% of its original price after five years, while the 370Z only retains 19.47% to 45.22%.

According to The Car Book by Jack Gillis, the Civic Si is less expensive to operate than the 370Z because it costs $171 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 $371 less for a water pump, $281 less for a muffler, $23 less for front brake pads, $170 less for fuel injection, $3 less for a fuel pump, $368 less for front struts, $192 less for a timing belt/chain and $413 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 $12562 to $32230 less than for the Nissan 370Z.


The Civic Si was chosen as one of Car and Driver’s “Top Ten” in 2018. 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 22 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 over 93 to one during the 2018 model year.

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

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