2021 BMW 8-Series vs 2021 Porsche 911

2021 BMW 8-Series

#6 in Coupes

2021 Porsche 911

#3 in Coupes

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840i Convertible

Style	MPG City	MPG Hwy	Invoice	MSRP
8 Series 840i Convertible	22	29	$91,080	$97,400
8 Series 840i Coupe	23	30	$82,340	$88,000
8 Series 840i Gran Coupe	22	29	$79,550	$85,000
8 Series 840i xDrive Convertible	20	27	$93,780	$100,300
8 Series 840i xDrive Coupe	20	27	$85,035	$90,900
8 Series 840i xDrive Gran Coupe	20	27	$82,245	$87,900
8 Series M850i xDrive Convertible	17	24	$113,400	$121,400
8 Series M850i xDrive Coupe	17	25	$104,565	$111,900
8 Series M850i xDrive Gran Coupe	17	24	$101,775	$108,900
M8 Gran Coupe	15	21	$121,400	$130,000

Select style

Carrera 4 Convertible

Style	MPG City	MPG Hwy	Invoice	MSRP
911 Carrera 4 Convertible	18	24	N/A	$119,300
911 Carrera 4 Coupe	18	24	N/A	$106,500
911 Carrera 4S Convertible	18	23	N/A	$135,200
911 Carrera 4S Coupe	18	23	N/A	$122,400
911 Carrera Convertible	18	24	N/A	$112,000
911 Carrera Coupe	18	24	N/A	$99,200
911 Carrera S Convertible	18	23	N/A	$127,900
911 Carrera S Coupe	18	23	N/A	$115,100
911 Targa 4	18	24	N/A	$119,300
911 Targa 4S	18	23	N/A	$135,200
911 Targa 4S Heritage Design Edition	18	23	N/A	$180,600
911 Turbo Convertible	15	20	N/A	$183,600
911 Turbo Coupe	15	20	N/A	$170,800
911 Turbo S Convertible	15	20	N/A	$216,300
911 Turbo S Coupe	15	20	N/A	$203,500

Show Only Differences

Pricing

Invoice Price

$91,080

N/A

Manufacturer Suggested Retail Price

$97,400

$119,300

Monthly Payment Estimate

$1623 / month

$1988 / month

The Car Connection's Take

TCC Rating

7.0

Read Our Full Review

7.2

Read Our Full Review

TCC’s Bottom Line

The 2021 BMW 8-Series is a gorgeous statement piece that strikes an enviable balance between performance and usability.

The 2021 Porsche 911 bristles with pavement-conquering confidence, and brims with tech and luxe touches.

TCC Likes

Ferocious M8
You’ll likely have the only one on your block
Dazzling Gran Coupe style

A sports car icon
Performance perfection
Near infinite customization

TCC Dislikes

Not as honed as rivals
Nickel-and-dime safety gear
840i can feel too soft

Get a second mortgage if you want to buy a Turbo
Manual transmission isn’t offered on base car
Back seat or penalty box? Hard to tell

Fuel Economy

City

22 mpg

18 mpg

Highway

29 mpg

24 mpg

Vehicle

EPA Classification

Subcompact Cars

Minicompact Cars

Interior Dimensions

Front Head Room (in)

38.9

Front Shoulder Room (in)

57.2

Second Leg Room (in)

29.5

Passenger Capacity

Front Leg Room (in)

42.1

Second Head Room (in)

34.7

Second Shoulder Room (in)

45.7

Exterior Dimensions

Min Ground Clearance (in)

4.6

Length, Overall (in)

191.1

177.9

Height, Overall (in)

52.7

51.1

Track Width, Rear (in)

64.6

61.2

Wheelbase (in)

111.1

96.5

Width, Max w/o mirrors (in)

74.9

72.9

Track Width, Front (in)

64.1

62.7

Cargo Area Dimensions

Trunk Volume (ft³)

12.4

Brakes

Brake ABS System

4-Wheel

Disc - Rear (Yes or )

Yes

Brake Type

4-Wheel Disc

Disc - Front (Yes or )

Yes

Drum - Rear (Yes or )

Rear Brake Rotor Diam x Thickness (in)

Rear Drum Diam x Width (in)

Front Brake Rotor Diam x Thickness (in)

Fuel Tank

Fuel Tank Capacity, Approx (gal)

17.6

Steering

Steering Type

Rack-Pinion

Turning Diameter - Curb to Curb (ft)

38.2

36.8

Tires

Spare Tire Size

Front Tire Order Code

258

Spare Tire Order Code

Rear Tire Size

P275/40VR18

P295/35YR20

Rear Tire Order Code

258

Front Tire Size

P245/45VR18

P235/40YR19

Weight Information

Base Curb Weight (lbs)

4211

3614

Wheels

Rear Wheel Material

Aluminum

Rear Wheel Size (in)

18 X 9

20 X 11.5

Front Wheel Material

Aluminum

Spare Wheel Material

Front Wheel Size (in)

18 X 8

19 X 8.5

Spare Wheel Size (in)

Engine

Engine Type

Intercooled Turbo Premium Unleaded I-6

Twin Turbo Premium Unleaded H-6

Fuel System

Gasoline Direct Injection

SAE Net Torque @ RPM

368 @ 1600

331 @ 1950

Engine Order Code

Displacement

3.0 L/183

3.0 L/182

SAE Net Horsepower @ RPM

335 @ 5000

379 @ 6500

Mileage

EPA Fuel Economy Est - City (MPG)

Fuel Economy Est-Combined (MPG)

EPA Fuel Economy Est - Hwy (MPG)

Transmission

Second Gear Ratio (:1)

3.36

3.17

Trans Order Code

2TB

G1G

Fourth Gear Ratio (:1)

1.72

1.56

Trans Description Cont.

Automatic w/OD

Auto-Shift Manual w/OD

Seventh Gear Ratio (:1)

0.82

0.76

Drivetrain

Rear Wheel Drive

All Wheel

Sixth Gear Ratio (:1)

1.00

0.94

First Gear Ratio (:1)

5.25

4.89

Final Drive Axle Ratio (:1)

2.93

3.39

Third Gear Ratio (:1)

2.17

2.15

Trans Type

Fifth Gear Ratio (:1)

1.32

1.18

Trans Description Cont. Again

Eighth Gear Ratio (:1)

0.64

0.61

Reverse Ratio (:1)

3.71

3.99

Summary

Vehicle Name

BMW 8 Series

Porsche 911

Body Style

Convertible

Cabriolet

Suspension

Suspension Type - Rear

Multi-Link

Suspension Type - Rear (Cont.)

Multi-Link

Suspension Type - Front

Double Wishbone

Strut

Suspension Type - Front (Cont.)

Double Wishbone

Strut

Emissions

Tons/yr of CO2 Emissions @ 15K mi/year

7.1

8.8

2021 BMW 8-Series

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2021 Porsche 911

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