BMW M8 Competition vs. Porsche 911 Turbo S
iSeeCars' unbiased and data-driven comparison of the BMW M8 Competition and Porsche 911 Turbo S contrasts the two cars across a broad spectrum of vehicle specifications to determine which car is better. In addition to comparing pricing and specs, iSeeCars uses all the ratings, rankings, and insights from its comprehensive analyses of each vehicle model, including calculations of reliability, safety, depreciation, value retention, and the vehicle's projected lifetime recalls (based on analyzing over 25 billion data points). This in-depth evaluation is used to identify which vehicle represents a better overall choice for shoppers who are considering both the BMW M8 Competition and the Porsche 911 Turbo S.
In comparing the BMW M8 Competition's and the Porsche 911 Turbo S's specifications and ratings, the BMW M8 Competition has the advantage in the areas of new vehicle base pricing, typical lower range of pricing for one- to five-year-old used cars, and fuel efficiency. The Porsche 911 Turbo S has the advantage in the areas of resale value and base engine power. Based on this comparison of the BMW M8 Competition's and the Porsche 911 Turbo S's specifications and ratings, the BMW M8 Competition is a better car than the Porsche 911 Turbo S.
Pricing: A used 2025 BMW M8 Competition ranges from $111,175 to $159,328 while a used 2025 Porsche 911 Turbo S is priced between $287,500 to $366,922. For a new model, the BMW M8 Competition's price is between $153,439 and $172,396, with the Porsche 911 Turbo S priced between $264,071 and $301,237.
Resale/Retained Value: Looking at the 5-year depreciation rate for both models, the BMW M8 Competition loses 54.5 percent of its value and the Porsche 911 Turbo S loses 26.3 percent of its value. This means the Porsche 911 Turbo S retains 28.2 percentage points more of its value and has the advantage of higher resale value versus the BMW M8 Competition.
Engine Power and Fuel Efficiency Comparison: For engine performance, the BMW M8 Competition’s base engine makes 617 horsepower, and the Porsche 911 Turbo S base engine makes 640 horsepower. The Competition is rated to deliver an average of 17 miles per gallon, with a highway range of 442 miles. The Turbo S is rated to deliver an average of 16 miles per gallon, with a highway range of 332 miles. This gives the BMW M8 Competition the fuel efficiency and maximum range advantage over the Porsche 911 Turbo S. Both models use premium unleaded.
New Car Pricing
Asking Price:
153439 - 172396
Starting MSRP:
150000
Category Avg Starting MSRP:
(Luxury Sports Cars)
90928
Category Starting MSRP Range:
(Luxury Sports Cars)
54500 - 150000
New Car Pricing
Asking Price:
264071 - 301237
Starting MSRP:
243200
Category Avg Starting MSRP:
(Luxury Sports Cars)
90928
Category Starting MSRP Range:
(Luxury Sports Cars)
54500 - 150000
Used Car Pricing
Avg Used Car Price:
134359
Price Range:
111175 - 159328
Category Avg Price:
(Luxury Sports Cars)
121269
Category Avg Price Range:
(Luxury Sports Cars)
60394 - 258844
# Used Cars for Sale Nationally:
103
Avg Mileage of Used Cars for Sale:
# Good or Great Deals:
0
Used Car Pricing
Avg Used Car Price:
329873
Price Range:
287500 - 366922
Category Avg Price:
(Luxury Sports Cars)
121269
Category Avg Price Range:
(Luxury Sports Cars)
60394 - 258844
# Used Cars for Sale Nationally:
Avg Mileage of Used Cars for Sale:
# Good or Great Deals:
5-year Depreciation
Depreciation $:
82577
Depreciation %:
0.55051463
Resale Value $:
67423
Residual Value %:
0.44948537
Typical Category Depreciation %:
(Luxury Sports Cars)
0.27961642
Category Depreciation Range:
(Luxury Sports Cars)
0.17060832 - 0.55051463
5-year Depreciation
Depreciation $:
65127
Depreciation %:
0.26779135
Resale Value $:
178073
Residual Value %:
0.73220865
Typical Category Depreciation %:
(Luxury Sports Cars)
0.27961642
Category Depreciation Range:
(Luxury Sports Cars)
0.17060832 - 0.55051463
BMW M8 Scores & Rankings
Overall Score:
Not available
Reliability:
Not available
Retained Value:
7.5 / 10
Safety:
Not available
Porsche 911 Scores & Rankings
Overall Score:
9.1 / 10
Reliability:
8.7 / 10
Retained Value:
9.4 / 10
Safety:
Not available
iSeeCars Reliability Insights for BMW M8 Competition
Avg Life Expectancy (years):
Typical Category Life Expectancy:
(Luxury Sports Cars)
20.2
Category Life Expectancy Range:
(Luxury Sports Cars)
13.0 - 29.7
Chance of Reaching 200k Miles for a New Car:
iSeeCars Reliability Insights for Porsche 911 Turbo S
Avg Life Expectancy (years):
29.5
Typical Category Life Expectancy:
(Luxury Sports Cars)
20.2
Category Life Expectancy Range:
(Luxury Sports Cars)
13.0 - 29.7
Chance of Reaching 200k Miles for a New Car:
0.0
Expected 30-year Lifetime Recalls
Expected Lifetime Recalls:
6.981578871868141
Typical Category Recalls:
(Luxury Sports Cars)
3.9
Category Range for Recalls:
(Luxury Sports Cars)
0.9 - 7.2
Expected 30-year Lifetime Recalls
Expected Lifetime Recalls:
7.16068364821227
Typical Category Recalls:
(Luxury Sports Cars)
3.9
Category Range for Recalls:
(Luxury Sports Cars)
0.9 - 7.2
BMW M8 Rankings
Ranking
4 out of / 25Ranking
7 out of / 40Ranking
7 out of / 25Ranking
7 out of / 25Ranking
9 out of / 40Ranking
9 out of / 40Ranking
10 out of / 25Ranking
11 out of / 40Ranking
14 out of / 16Ranking
24 out of / 25Ranking
25 out of / 29Ranking
40 out of / 40Porsche 911 Rankings
Ranking
1 out of / 40Ranking
1 out of / 25Ranking
1 out of / 25Ranking
1 out of / 8Ranking
1 out of / 4Ranking
2 out of / 40Ranking
2 out of / 25Ranking
2 out of / 25Ranking
4 out of / 40Ranking
4 out of / 40Ranking
13 out of / 16Ranking
23 out of / 29Available Body Styles
Convertible, Coupe, Sedan
Available Body Styles
Convertible, Coupe
Available Drivetrain Options
Gasoline
Available Drivetrain Options
Gasoline
Other BMW M8 Trim Levels
Not yet available
Other Porsche 911 Trim Levels
Carrera, Carrera S, Carrera T, Turbo
Warranty Information
Warranty, Bumper-to-Bumper:
4 years / 50000 miles
Warranty, Powertrain:
4 years / 50000 miles
Warranty, Roadside Assistance:
4 years
Warranty Information
Warranty, Bumper-to-Bumper:
4 years / 50000 miles
Warranty, Powertrain:
4 years / 50000 miles
Warranty, Roadside Assistance:
4 years / 50000 miles
Safety Ratings
NHTSA Safety Rating (last 5 year average):
Not yet available
2025 NHTSA Overall Rating:
Not yet available
2025 NHTSA Front Crash Overall Rating:
Not yet available
2025 NHTSA Side Crash Overall Rating:
Not yet available
2025 NHTSA Rollover Rating:
Not yet available
IIHS Safety Rating:
Not yet available
Safety Ratings
NHTSA Safety Rating (last 5 year average):
Not yet available
2025 NHTSA Overall Rating:
Not yet available
2025 NHTSA Front Crash Overall Rating:
Not yet available
2025 NHTSA Side Crash Overall Rating:
Not yet available
2025 NHTSA Rollover Rating:
Not yet available
IIHS Safety Rating:
Not yet available
Base Drivetrain Specs
Horsepower:
617 hp @ 6000 rpm
Torque:
553 foot-lbs @ 1800 rpm
Power-to-Weight Ratio (higher is better):
0.135 hp per pound
Base Drivetrain Specs
Horsepower:
640 hp @ 6750 rpm
Torque:
590 foot-lbs @ 2500 rpm
Power-to-Weight Ratio (higher is better):
0.168 hp per pound
Engine Specifications
Engine Size:
4.4 liters
Engine Configuration:
V
Number of Cylinders:
8
Transmission:
Automatic
Standard/Optional Drivetrain Type:
AWD
EPA Fuel Economy
(City/Highway/Combined MPG):
15 / 22 / 17
Range (city/hwy):
302 / 442 miles
Recommended Fuel Type:
Premium Unleaded
Engine Specifications
Engine Size:
3.8 liters
Engine Configuration:
Flat/Horizontally Opposed
Number of Cylinders:
6
Transmission:
Automatic
Standard/Optional Drivetrain Type:
AWD
EPA Fuel Economy
(City/Highway/Combined MPG):
14 / 20 / 16
Range (city/hwy):
232 / 332 miles
Recommended Fuel Type:
Premium Unleaded
Standard/Optional Features
Alloy wheels:
Standard
Android Auto:
Standard
Apple CarPlay:
Standard
Bench Seats:
Standard
Bluetooth:
Standard
Cooled/Ventilated Seats:
Standard
Heated Seats
Standard
Heated Steering Wheel:
Standard
Internet Radio:
Standard
Keyless Entry:
Standard
Keyless Ignition:
Standard
Leather Upholstery:
Standard
Navigation System:
Standard
Paddle Shifters:
Standard
Power Lift Gate:
Standard
Power outlet:
Standard
Roadside assistance:
Standard
Satellite radio:
Standard
Voice Recognition:
Standard
Wifi:
Standard
Wireless Smartphone Charging:
Standard
Adaptive Cruise Control:
Available
Automatic Parking:
Available
Parking Sensors:
Available
Air Suspension:
N/A
Captain's seat:
N/A
Front Bench Seats:
N/A
Massage Seats:
N/A
Panoramic Sunroof/Moonroof
N/A
Quad Seats:
N/A
Roof Rack:
N/A
Sunroof/Moonroof:
N/A
Trailer Hitch:
N/A
Standard/Optional Features
Alloy wheels:
Standard
Android Auto:
Standard
Apple CarPlay:
Standard
Bench Seats:
Standard
Bluetooth:
Standard
Cooled/Ventilated Seats:
Available
Heated Seats
Standard
Heated Steering Wheel:
Available
Internet Radio:
Standard
Keyless Entry:
Standard
Keyless Ignition:
Standard
Leather Upholstery:
Standard
Navigation System:
Standard
Paddle Shifters:
Standard
Power Lift Gate:
Standard
Power outlet:
Standard
Roadside assistance:
Standard
Satellite radio:
Standard
Voice Recognition:
Standard
Wifi:
Standard
Wireless Smartphone Charging:
N/A
Adaptive Cruise Control:
Available
Automatic Parking:
N/A
Parking Sensors:
Standard
Air Suspension:
N/A
Captain's seat:
N/A
Front Bench Seats:
N/A
Massage Seats:
N/A
Panoramic Sunroof/Moonroof
N/A
Quad Seats:
N/A
Roof Rack:
N/A
Sunroof/Moonroof:
N/A
Trailer Hitch:
N/A
Safety Features
Backup camera:
Standard
Driver Attention Monitoring:
Standard
Forward Collision Warning:
Standard
Lane Departure Warning:
Standard
Pedestrian Detection:
Standard
360-Degree Camera:
N/A
Blind Spot Monitoring:
N/A
Lane Keeping Assist:
N/A
Rear Cross-Traffic Alert:
N/A
Rear Seat Reminder:
N/A
Safety Features
Backup camera:
Standard
Driver Attention Monitoring:
N/A
Forward Collision Warning:
Standard
Lane Departure Warning:
N/A
Pedestrian Detection:
Standard
360-Degree Camera:
N/A
Blind Spot Monitoring:
N/A
Lane Keeping Assist:
N/A
Rear Cross-Traffic Alert:
N/A
Rear Seat Reminder:
N/A
Interior Dimensions
Front Head Room:
38.9 inches
Front Leg Room:
42.1 inches
Front Shoulder Room:
57.2 inches
Rear Head Room:
34.7 inches
Rear Leg Room:
29.5 inches
Rear Shoulder Room:
45.7 inches
Cargo Space:
12.4 cubic feet
Overall Interior Volume:
81.0 cubic feet
Interior Dimensions
Front Head Room:
Not yet available
Front Leg Room:
Not yet available
Front Shoulder Room:
Not yet available
Rear Head Room:
Not yet available
Rear Leg Room:
Not yet available
Rear Shoulder Room:
Not yet available
Cargo Space:
4.5 cubic feet
Overall Interior Volume:
Not yet available
Exterior Dimensions
Curb Weight:
4560 lbs
Width:
84.1 inches
Height:
53.3 inches
Length:
191.8 inches
Wheelbase:
111.3 inches
Ground Clearance:
4.8 inches
Exterior Dimensions
Curb Weight:
3803 lbs
Width:
79.7 inches
Height:
51.3 inches
Length:
178.5 inches
Wheelbase:
96.5 inches
Ground Clearance:
Not yet available
Standard Wheel/Tire Information
Wheel Size:
20.0 x 9.5 inches
Wheel Type:
painted aluminum alloy
Tire Size:
275/35R20
Standard Wheel/Tire Information
Wheel Size:
20.0 x 9.0 inches
Wheel Type:
painted aluminum alloy
Tire Size:
255/35ZR20
Exterior Colors
Black
Black Sapphire Metallic
Blue
Frozen Tanzanite Blue Metallic / Marina Bay Blue Metallic / Tanzanite Blue II Metallic
Gray
Brooklyn Grey Metallic / Dravit Grey Metallic / Frozen Pure Grey Metallic / Skyscraper Grey Metallic
Green
Isle of Man Green Metallic
Red
Aventurin Red Metallic
White
Alpine White
Exterior Colors
Black
Not available
Blue
Not available
Gray
Not available
Green
Not available
Red
Not available
White
Not available
Interior Colors
Beige
Midrand Beige
Black
Black / Black/Midrand Beige / Black/Sakhir Orange
Brown
Taruma Brown
Gray
Silverstone
Orange
Sakhir Orange/Black
White
Ivory White/Night Blue / Ivory White/Tartufo
Interior Colors
Beige
Not available
Black
Not available
Brown
Not available
Gray
Not available
Orange
Not available
White
Not available
