Certified Benz & Beemer Compares 2016 BMW i8 VS 2016 Porsche 911 Near Scottsdale, AZ

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2016 BMW i8

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VS

2016 Porsche 911

Safety Comparison

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For enhanced safety, the front and rear seat shoulder belts of the BMW i8 have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision. The Porsche 911 doesn’t offer pretensioners for the rear seat belts.

To provide maximum traction and stability on all roads, Full-Time Four-Wheel Drive is standard on the i8. But it costs extra on the 911.

The i8 has standard BMW Assist, which uses a global positioning satellite (GPS) receiver and a cellular system to remotely unlock your doors if you lock your keys in, help track down your vehicle if it’s stolen or send emergency personnel to the scene if any airbags deploy. The 911 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 i8 and the 911 have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights and front parking sensors.

Warranty Comparison

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BMW pays for scheduled maintenance on the i8 for 4 years and 50,000 miles. BMW will pay for oil changes, lubrication and any other required maintenance. Porsche doesn’t pay scheduled maintenance for the 911.

There are over 74 percent more BMW dealers than there are Porsche dealers, which makes it much easier should you ever need service under the i8’s warranty.

Engine Comparison

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The i8’s 1.5 turbo 3 cyl. hybrid produces 7 more horsepower (357 vs. 350) and 133 lbs.-ft. more torque (420 vs. 287) than the 911’s standard 3.4 DOHC 6 cyl. The i8’s 1.5 turbo 3 cyl. hybrid produces 95 lbs.-ft. more torque (420 vs. 325) than the 911 S’ standard 3.8 DOHC 6 cyl. The i8’s 1.5 turbo 3 cyl. hybrid produces 95 lbs.-ft. more torque (420 vs. 325) than the 911 GTS’ standard 3.8 DOHC 6 cyl.

As tested in Car and Driver the BMW i8 is faster than the 911 S (automatics tested):

i8

911

Zero to 30 MPH

1.5 sec

1.6 sec

Zero to 60 MPH

3.6 sec

4 sec

Zero to 100 MPH

9 sec

9.3 sec

5 to 60 MPH Rolling Start

4.6 sec

5 sec

Passing 30 to 50 MPH

2.6 sec

2.9 sec

Quarter Mile

12.1 sec

12.4 sec

Fuel Economy and Range Comparison

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On the EPA test cycle the i8 on a full charge gets better fuel mileage than the 911 Turbo (80 city/72 hwy vs. 17 city/24 hwy). The i8 on a full charge gets better fuel mileage than the 911 Coupe Auto (80 city/72 hwy vs. 20 city/28 hwy).

On the EPA test cycle the i8 running its gasoline engine gets better fuel mileage than the 911 Turbo (28 city/29 hwy vs. 17 city/24 hwy). The i8 running its gasoline engine gets better fuel mileage than the 911 Coupe Auto (28 city/29 hwy vs. 20 city/28 hwy).

The i8 can drive on battery power alone for up to 22 miles. The 911 must run its internal combustion engine to move.

Brakes and Stopping Comparison

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For better stopping power the i8’s standard brake rotors are larger than those on the 911:

i8

911

Front Rotors

13.4 inches

13 inches

Tires and Wheels Comparison

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For better ride, handling and brake cooling the i8 has standard 20-inch wheels. Smaller 19-inch wheels are standard on the 911.

Suspension and Handling Comparison

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For a smoother ride and more stable handling, the i8’s wheelbase is 13.7 inches longer than on the 911 (110.2 inches vs. 96.5 inches).

For better handling and stability, the track (width between the wheels) on the i8 is 4.2 inches wider in the front and 7 inches wider in the rear than the average track on the 911.

The i8’s front to rear weight distribution is more even (48.7% to 51.3%) than the 911’s (39.3% to 60.7%). This gives the i8 more stable handling and braking.

Chassis Comparison

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The design of the BMW i8 amounts to more than styling. The i8 has an aerodynamic coefficient of drag of .26 Cd. That is lower than the 911 (.29 to .34). A more efficient exterior helps the i8 go faster and keeps the interior quieter. It also helps the i8 get better fuel mileage.

As tested by Car and Driver, the interior of the i8 is quieter than the 911 GT3:

i8

911

At idle

40 dB

59 dB

Full-Throttle

87 dB

94 dB

70 MPH Cruising

68 dB

77 dB

Passenger Space Comparison

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Because it has more passenger and cargo room, the i8 is rated a Subcompact car by the EPA, while the 911 Coupe is rated a Minicompact.

The i8 has 11 cubic feet more passenger volume than the 911 Coupe (81 vs. 70).

The i8 has .7 inches more front headroom, 10.3 inches more front shoulder room, 1.4 inches more rear headroom, 3.2 inches more rear legroom and 3.2 inches more rear shoulder room than the 911 Coupe.

Ergonomics Comparison

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The i8 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 i8 has a standard heads-up display which 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.

If the windows are left down on the i8 the driver can raise them all using the key in the outside lock cylinder. On a hot day the driver can lower the windows from outside the vehicle using the key in the outside lock cylinder or the keyless remote. The driver of the 911 can only operate the windows from inside the vehicle, with the ignition on.

The i8’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 911 GT3’s standard manually variable intermittent wipers have to be constantly adjusted.

While driving with high beams on, sensitive light sensors standard on the i8 detect other vehicles which could be blinded and automatically switch to low beams. The 911 doesn’t offer automatic dimming high beams.

The i8 has a standard center folding armrest for the rear passengers. A center armrest helps make rear passengers more comfortable. The 911 doesn’t offer a rear seat center armrest.

Recommendations Comparison

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The i8 was chosen as one of Automobile Magazine’s “All Stars” in 2015. The 911 hasn’t been picked since 2009.

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