2021 BMW M4 vs. 2021 Porsche 911
When we compare the 2021 BMW M4's and the 2021 Porsche 911's specifications and ratings, the 2021 BMW M4 has the advantage in the areas of typical lower range of pricing for used cars, interior volume and base engine power. The 2021 Porsche 911 has the advantage in the areas of fuel efficiency, reliability, resale value and overall quality score. Based on this comparison of the 2021 BMW M4's and the 2021 Porsche 911's specifications and ratings, the 2021 Porsche 911 is a better car than the 2021 BMW M4.
2021 BMW M4 vs. 2021 Porsche 911 Pricing
A used 2021 BMW M4 ranges from $66,991 to $80,969 while a used 2021 Porsche 911 is priced between $113,992 to $252,180.
2021 BMW M4 vs. 2021 Porsche 911 Resale/Retained Value
Looking at the 5-year depreciation rate for both models, the 2021 BMW M4 loses 38.4 percent of its value and the 2021 Porsche 911 loses 15.2 percent of its value. This means the 2021 Porsche 911 retains 23.2 percentage points more of its value and has the advantage of higher resale value versus the 2021 BMW M4.
2021 BMW M4 vs. 2021 Porsche 911 Quality Rating
The iSeeCars Overall Quality rating for the BMW M4 is 7.3 out of 10 while the Porsche 911's quality rating is 8.5 out of 10. This results in the BMW M4 being ranked 9 out of 21 Best Luxury 2-seater Cars and the Porsche 911 being ranked 1 out of 21. Out of 40 Best Luxury Sports Cars, the BMW M4 is ranked 18 and the Porsche 911 is ranked 1. The BMW M4 is also ranked 18 out of 33 Best Luxury Coupes while the Porsche 911 is ranked 2 out of 33.
2021 BMW M4 vs. 2021 Porsche 911 Reliability Rating
iSeeCars’ Reliability Rating for the BMW M4 is 7.2 out of 10. For the Porsche 911 the reliability rating is 7.8 out of 10. This gives the Porsche 911 a slight advantage in reliability compared to the BMW M4.
Engine Power and Fuel Efficiency Comparison
For engine performance, the 2021 BMW M4’s base engine makes 473 horsepower, and the 2021 Porsche 911 base engine makes 379 horsepower. The M4 is rated to deliver an average of 19 miles per gallon, with a highway range of 359 miles. The 911 is rated to deliver an average of 20 miles per gallon, with a highway range of 406 miles. This gives the 2021 Porsche 911 the fuel efficiency and maximum range advantage over the 2021 BMW M4. Both models use premium unleaded.
Passenger Space Comparison
While both models are sports cars, the 2021 BMW M4 has the advantage of offering more interior volume, reflected in more cargo space.
Pricing
New Asking Price:
-
Used Asking Price:
$66,991 - $80,969
5-Year Depreciation (lower is better):
38.4%
Pricing
New Asking Price:
-
Used Asking Price:
$113,992 - $252,180
5-Year Depreciation (lower is better):
15.2%
BMW M4 Scores & Rankings
Overall Score:
7.3 / 10
Reliability:
7.2 / 10
Retained Value:
7.4 / 10
Safety:
Not available
Porsche 911 Scores & Rankings
Overall Score:
8.5 / 10
Reliability:
7.8 / 10
Retained Value:
9.1 / 10
Safety:
Not available
BMW M4 Rankings
Ranking
1 out of / 33Ranking
1 out of / 21Ranking
2 out of / 40Ranking
2 out of / 21Ranking
5 out of / 40Ranking
5 out of / 33Ranking
6 out of / 11Ranking
8 out of / 21Ranking
9 out of / 21Ranking
9 out of / 15Ranking
10 out of / 33Ranking
12 out of / 40Ranking
12 out of / 19Ranking
13 out of / 23Ranking
13 out of / 21Ranking
14 out of / 33Ranking
17 out of / 32Ranking
18 out of / 40Ranking
18 out of / 33Ranking
19 out of / 29Ranking
20 out of / 40Ranking
21 out of / 40Porsche 911 Rankings
Ranking
1 out of / 40Ranking
1 out of / 40Ranking
1 out of / 40Ranking
1 out of / 33Ranking
1 out of / 33Ranking
1 out of / 23Ranking
1 out of / 21Ranking
1 out of / 21Ranking
1 out of / 21Ranking
1 out of / 11Ranking
2 out of / 33Ranking
2 out of / 19Ranking
4 out of / 33Ranking
5 out of / 40Ranking
5 out of / 21Ranking
9 out of / 21Ranking
10 out of / 40Ranking
11 out of / 15Ranking
15 out of / 33Ranking
17 out of / 40Ranking
23 out of / 32Ranking
23 out of / 29Available Body Styles
Coupe
Available Body Styles
Convertible, Coupe
Available Drivetrain Options
Gasoline
Available Drivetrain Options
Gasoline
2021 BMW M4 Trim Levels
Base, Competition
2021 Porsche 911 Trim Levels
Not yet available
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
IIHS Safety Rating:
Not yet available
Safety Ratings
NHTSA Safety Rating (last 5 year average):
Not yet available
IIHS Safety Rating:
Not yet available
Base Drivetrain Specifications
Horsepower:
473 hp @ 6250 rpm
Torque:
406 foot-lbs @ 2650 rpm
Power-to-Weight Ratio (higher is better):
0.123 hp per pound
Base Drivetrain Specifications
Horsepower:
379 hp @ 6500 rpm
Torque:
331 foot-lbs @ 1950 rpm
Power-to-Weight Ratio (higher is better):
0.113 hp per pound
Engine Specifications
Engine Size:
3 liters
Engine Configuration:
Inline
Number of Cylinders:
6
Transmission:
Manual
Standard/Optional Drivetrain Type:
RWD
EPA Fuel Economy
(City/Highway/Combined MPG):
16 / 23 / 19
Range (city/hwy):
250 / 359 miles
Recommended Fuel Type:
Premium Unleaded
Engine Specifications
Engine Size:
3 liters
Engine Configuration:
Flat/Horizontally Opposed
Number of Cylinders:
6
Transmission:
Automatic
Standard/Optional Drivetrain Type:
RWD / AWD
EPA Fuel Economy
(City/Highway/Combined MPG):
18 / 24 / 20
Range (city/hwy):
304 / 406 miles
Recommended Fuel Type:
Premium Unleaded
Standard/Optional Features
Android Auto:
Standard
Apple Car Play:
Standard
Heated Seats
Standard
Keyless Entry:
Standard
Keyless Ignition:
Standard
Leather Upholstery:
Standard
Navigation System:
Standard
Adaptive Cruise Control:
Available
Cooled/Ventilated Seats:
Available
Heated Steering Wheel:
Available
Sunroof/Moonroof:
Available
Wireless Smartphone Charging:
Available
Standard/Optional Features
Android Auto:
N/A
Apple Car Play:
Standard
Heated Seats
Standard
Keyless Entry:
Standard
Keyless Ignition:
Standard
Leather Upholstery:
Standard
Navigation System:
Standard
Adaptive Cruise Control:
Available
Cooled/Ventilated Seats:
Available
Heated Steering Wheel:
Available
Sunroof/Moonroof:
Available
Wireless Smartphone Charging:
N/A
Safety Equipment
Blind Spot Monitoring:
Standard
Driver Attention Monitoring:
Standard
Forward Collision Warning:
Standard
Lane Departure Warning:
Standard
Pedestrian Detection:
Standard
Rear Cross-Traffic Alert:
Standard
360-Degree Camera:
Available
Lane Keeping Assist:
Available
Rear Seat Reminder:
N/A
Safety Equipment
Blind Spot Monitoring:
N/A
Driver Attention Monitoring:
N/A
Forward Collision Warning:
Standard
Lane Departure Warning:
N/A
Pedestrian Detection:
N/A
Rear Cross-Traffic Alert:
N/A
360-Degree Camera:
N/A
Lane Keeping Assist:
N/A
Rear Seat Reminder:
N/A
Interior Dimensions
Front Head Room:
40.3 inches
Front Leg Room:
41.7 inches
Front Shoulder Room:
55.1 inches
Rear Head Room:
35.8 inches
Rear Leg Room:
34.7 inches
Rear Shoulder Room:
51 inches
Cargo Space:
12 cubic feet
Overall Interior Volume:
87.0 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:
4.6 cubic feet
Overall Interior Volume:
70.0 cubic feet
Exterior Dimensions
Curb Weight:
3830 lbs
Width:
81.9 inches
Height:
54.8 inches
Length:
189.1 inches
Wheelbase:
112.5 inches
Ground Clearance:
4.7 inches
Exterior Dimensions
Curb Weight:
3354 lbs
Width:
79.7 inches
Height:
51.1 inches
Length:
177.9 inches
Wheelbase:
96.5 inches
Ground Clearance:
4.7 inches
Standard Wheel/Tire Information
Wheel Size:
18.0 x 9.5 inches
Wheel Type:
painted aluminum alloy
Tire Size:
275/40R18
Standard Wheel/Tire Information
Wheel Size:
19.0 x 8.5 inches
Wheel Type:
aluminum alloy
Tire Size:
235/40ZR19
