2018 Infiniti Q60 vs. 2018 Porsche 718 Cayman

Detailed Review, Specifications & Comparison

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Safety

The Q60 3.0t/Red Sport 400’s optional pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The 718 Cayman doesn’t offer pre-crash pretensioners.

Over 200 people are killed each year when backed over by motor vehicles. The Q60 Luxe/Sport/Red Sport 400 offers optional Back-up Collision Intervention which use rear sensors to monitor and automatically apply the brakes to prevent a rear collision. The 718 Cayman doesn’t offer backup collision prevention brakes.

The Q60 offers all-wheel drive to maximize traction under poor conditions, especially in ice and snow. The 718 Cayman doesn’t offer all-wheel drive.

The Q60 3.0t/Sport/Red Sport 400’s optional 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 718 Cayman doesn’t offer a lane departure warning system.

The Q60 Luxe/Sport/Red Sport 400 offers an optional Around View® Monitor to allow the driver to see objects all around the vehicle on a screen. The 718 Cayman 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.

To help make backing safer, the Q60 Luxe/Sport/Red Sport 400’s optional 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 718 Cayman doesn’t offer a cross-path warning system.

Both the Q60 and the 718 Cayman 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, rearview cameras, available crash mitigating brakes and blind spot warning systems.

The Infiniti Q60 weighs 587 to 1080 pounds more than the Porsche 718 Cayman. The NHTSA advises that heavier cars are much safer in collisions than their significantly lighter counterparts. Crosswinds also affect lighter cars more.

Warranty

The Q60 comes with a full 4-year/60,000-mile basic warranty, which covers the entire car and includes 24-hour roadside assistance. The 718 Cayman’s 4-year/50,000-mile basic warranty expires 10,000 miles sooner.

Infiniti’s powertrain warranty covers the Q60 2 years and 20,000 miles longer than Porsche covers the 718 Cayman. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 6 years or 70,000 miles. Coverage on the 718 Cayman ends after only 4 years or 50,000 miles.

There are over 12 percent more Infiniti dealers than there are Porsche dealers, which makes it easier should you ever need service under the Q60’s warranty.

Reliability

To reliably power the ignition and other systems and to recharge the battery, the Q60 has a standard 150-amp alternator (170-amp - Q60 Red Sport 400). The 718 Cayman’s 120-amp alternator isn’t as powerful.

From surveys of all its subscribers, Consumer Reports’ April 2018 Auto Issue reports that Infiniti vehicles are more reliable than Porsche vehicles. Consumer Reports ranks Infiniti 6 places higher in reliability than Porsche.

Engine

The Q60 has more powerful engines than the 718 Cayman:

 

Horsepower

Torque

Q60 3.0t 3.0 turbo V6

300 HP

295 lbs.-ft.

Q60 Red Sport 400 3.0 turbo V6

400 HP

350 lbs.-ft.

718 Cayman 2.0 turbo 4 cyl.

300 HP

280 lbs.-ft.

718 Cayman S 2.5 turbo 4 cyl.

350 HP

309 lbs.-ft.

Fuel Economy and Range

The Q60 has 5.7 gallons more fuel capacity than the 718 Cayman’s standard fuel tank (20 vs. 14.3 gallons), for longer range between fill-ups. The Q60 has 3.1 gallons more fuel capacity than the 718 Cayman’s optional fuel tank (20 vs. 16.9 gallons).

Transmission and Drivetrain

The Infiniti Q60 comes standard with an automatic transmission, for driver comfort, especially in the city. Automatic costs extra on the 718 Cayman.

All-wheel drive, available in the Q60, provides the best traction for acceleration in wet, dry, and icy conditions. In corners, all-wheel drive allows both outside wheels to provide power, balancing the car. This allows for better handling. The Porsche 718 Cayman is not available with all-wheel drive.

Brakes and Stopping

For better stopping power the Q60 Sport/Red Sport 400’s brake rotors are larger than those on the 718 Cayman:

 

Q60 Sport/Red Sport 400

718 Cayman

718 Cayman

Front Rotors

14 inches

13 inches

13.8 inches

Tires and Wheels

For better traction, the Q60 has larger standard tires than the 718 Cayman (255/40R19 vs. 235/45R18). The Q60 Red Sport 400’s tires are larger than the largest tires available on the 718 Cayman (F:255/35R20 & R:275/30R20 vs. F:235/45R18 & R:265/45R18).

The Q60’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 718 Cayman’s standard 45 series tires. The Q60 Red Sport 400’s 275/30R20 rear tires have a lower 30 series profile than the 718 Cayman’s optional 35 series tires.

For better ride, handling and brake cooling the Q60 has standard 19-inch wheels. Smaller 18-inch wheels are standard on the 718 Cayman.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires available on the Q60 can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The 718 Cayman doesn’t offer run-flat tires.

Suspension and Handling

For a smoother ride and more stable handling, the Q60’s wheelbase is 14.8 inches longer than on the 718 Cayman (112.2 inches vs. 97.4 inches).

For better handling and stability, the average track (width between the wheels) on the Q60 is 1.7 inches wider in the front and 1.8 inches wider in the rear than the average track on the 718 Cayman.

Chassis

The design of the Infiniti Q60 amounts to more than styling. The Q60 has an aerodynamic coefficient of drag of .28 Cd. That is lower than the 718 Cayman (.31). A more efficient exterior helps the Q60 go faster and keeps the interior quieter. It also helps the Q60 get better fuel mileage.

The Q60 Luxe/Sport/Red Sport 400 uses computer-generated active noise cancellation to help remove annoying noise and vibration from the passenger compartment, especially at low frequencies. The 718 Cayman doesn’t offer active noise cancellation.

Passenger Space

The Q60 has 37.4 cubic feet more passenger volume than the 718 Cayman (85.4 vs. 48).

Cargo Capacity

With its coupe body style, locking rear seatbacks and remote trunk release lockout, the Q60 offers cargo security. The 718 Cayman’s hatchback body style and non-lockable remote release defeat cargo security.

Servicing Ease

J.D. Power and Associates surveys of service recipients show that Infiniti service is better than Porsche. J.D. Power ranks Infiniti first in service department satisfaction. With a 2% lower rating, Porsche is ranked second.

Ergonomics

The Q60 3.0t/Sport/Red Sport 400 offers a 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 718 Cayman doesn’t offer a remote starting system.

The Q60’s standard power windows have a locking feature to keep children from operating them. Porsche does not offer a locking feature on the 718 Cayman’s power windows.

If the windows are left open on the Q60 the driver can close them all 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. The driver of the 718 Cayman can only operate the windows from inside the vehicle, with the ignition on.

The Q60’s standard speed-sensitive wipers speed up when the vehicle does, so that the driver doesn’t have to continually adjust the speed of the wipers. The 718 Cayman’s standard manually variable intermittent wipers have to be constantly adjusted.

While driving with high beams on, sensitive light sensors available for the Q60 3.0t/Red Sport 400 detect other vehicles which could be blinded and automatically switch to low beams. The 718 Cayman doesn’t offer automatic dimming high beams.

To shield the driver’s vision over a larger portion of the windshield and side window, the Q60 has a standard extendable sun visor. The 718 Cayman doesn’t offer extendable visors.

The Q60 has a 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. Dual zone air conditioning costs extra on the 718 Cayman.

Recommendations

J.D. Power and Associates rated the Q60 second among compact premium cars in owner reported satisfaction. This includes how well the vehicle performs and satisfies its owner’s expectations. The 718 Cayman isn’t in the top three.

The Infiniti Q60 outsold the Porsche Cayman by almost four to one during 2017.

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

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