2020 MINI Cooper Convertible vs. 2019 Porsche 718 Boxster

Detailed Review, Specifications & Comparison

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Safety

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Both the Cooper Convertible and the 718 Boxster have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee 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 and available front parking sensors.

Warranty

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MINI pays for scheduled maintenance on the Cooper Convertible for 2 years and 26000 miles longer than Porsche pays for maintenance for the 718 Boxster (3/36,000 vs. 1/10,000).

Reliability

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J.D. Power and Associates rated the Cooper Convertible first among compact sporty cars in their 2019 Initial Quality Study. The 718 Boxster isn’t in the top three in its category.

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

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 2019/11/16

On the EPA test cycle the Cooper Convertible gets better fuel mileage than the 718 Boxster:

Cooper Convertible

718 Boxster

1.5 turbo 3 cyl./7-spd. Auto

28 city/36 hwy

n/a

2.0 turbo 4 cyl. (228 HP)/8-spd. Auto

25 city/33 hwy

22 city/29 hwy

2.0 turbo 4 cyl./Auto

2.0 turbo 4 cyl. (189 HP)/7-spd. Auto

26 city/34 hwy

21 city/28 hwy

2.5 turbo 4 cyl./Auto

n/a

20 city/26 hwy

2.5 turbo 4 cyl./Auto

Environmental Friendliness

© 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 2019/11/16

In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the MINI Cooper Convertible higher (5 to 7 out of 10) than the Porsche 718 Boxster (3). This means the Cooper Convertible produces up to 24.5 pounds less smog-producing pollutants than the 718 Boxster every 15,000 miles.

Transmission

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An eight-speed automatic is standard on the MINI John Cooper Works Convertible, for better acceleration and lower engine speed on the highway. Only a seven-speed automatic is available for the 718 Boxster.

The MINI Cooper Convertible manual has a downshift rev synchronizer that automatically raises engine speed to make downshifts perfectly smooth. This keeps the car from lurching during downshifts, preventing loss of control during cornering. The 718 Boxster doesn’t offer a downshift rev synchronizer.

Tires and Wheels

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

Suspension and Handling

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For better maneuverability, the Cooper Convertible’s turning circle is .7 feet tighter than the 718 Boxster’s (35.4 feet vs. 36.1 feet).

Chassis

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The Cooper Convertible is 1 foot, 9.3 inches shorter than the 718 Boxster, making the Cooper Convertible easier to handle, maneuver and park in tight spaces.

As tested by Car and Driver, the interior of the Cooper Convertible is quieter than the 718 Boxster S:

Cooper Convertible

718 Boxster

At idle

43 dB

54 dB

Full-Throttle

74 dB

88 dB

70 MPH Cruising

71 dB

75 dB

Passenger Space

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The Cooper Convertible has standard seating for 4 passengers; the 718 Boxster can only carry 2.

The Cooper Convertible has 27 cubic feet more passenger volume than the 718 Boxster (76 vs. 49).

Ergonomics

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The Cooper Convertible offers an optional heads-up display that projects speed and navigation instruction readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The 718 Boxster doesn’t offer a heads-up display.

If the windows are left open on the Cooper Convertible 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 Boxster can only operate the windows from inside the vehicle, with the ignition on.

The Cooper Convertible’s power window, power lock, power mirror and cruise control switches are lit from behind, making them plainly visible and easier to operate at night. The 718 Boxster’s cruise control switches are unlit, making them difficult to find at night and operate safely.

The Cooper Convertible’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 718 Boxster’s standard manually variable intermittent wipers have to be constantly adjusted.

Heated windshield washer nozzles are standard on the Cooper Convertible to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The 718 Boxster doesn’t offer heated windshield washer nozzles.

The Cooper Convertible’s sun-visors swivel front-to-side to block glare from the side windows. The 718 Boxster’s visors are fixed into the windshield header.

The Cooper Convertible’s optional Parking Assistant can parallel park by itself, with the driver only controlling speed with the brake pedal. The 718 Boxster doesn’t offer an automated parking system.

Model Availability

© 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 2019/11/16

The MINI Cooper comes in coupe, convertible and four-door hatchback bodystyles; the Porsche 718 isn’t available as a four-door.

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 2019/11/16

Insurance will cost less for the Cooper Convertible owner. The Complete Car Cost Guide estimates that insurance for the Cooper Convertible will cost $1550 less than the 718 Boxster over a five-year period.

IntelliChoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the MINI Cooper Convertible will be $20123 to $23156 less than for the Porsche 718 Boxster.

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 2019/11/16

J.D. Power and Associates rated the Cooper Convertible first among compact sporty cars in owner reported satisfaction. This includes how well the vehicle performs and satisfies its owner’s expectations. The 718 Boxster isn’t in the top three.

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

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