BMW M3 vs Porsche 911 Compare price, expert/user reviews, mpg, engines, safety, cargo capacity and other specs at a glance.

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2018 BMW M3 CS Sedan RWD
Photo of 2017 model year shown

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User Ranking Drivers and owners ranked these cars in 9 categories.

Used Car Pricing Used listing price comparison and analysis.

2018 BMW M3
CS Sedan RWD
CarGurus Instant Market Value
$59,719
74 listings nationwide
5 GREAT deals
16 GOOD deals

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2021 Porsche 911
Carrera 4 Cabriolet AWD
CarGurus Instant Market Value
$119,300

Expert Reviews Reviews from CarGurus experts.

2018 BMW M3
CS Sedan RWD
Andrew Newton Preview:

In the world of German performance cars, the BMW M3 is one of the most prestigious names of all time. The latest version is very different from the original. The latest M3 is a luxuri...

2021 Porsche 911
Carrera 4 Cabriolet AWD
Josh Jacquot Preview:

Entering its second year in the 992 generation, Porsche’s iconic 911 remains one of the most versatile and daily drivable sports cars ever made. Its trims and drive configurations enco...

User Reviews Reviews from CarGurus users who have driven or owned the car.

2018 BMW M3
CS Sedan RWD
Adam writes:
Serious Performance for a sedan Can drive a family of more than 3
Power Ranked 2018 Porsche 911 Carrera GTS Coupe RWD better.
"Little Lighter/25 more hp to crank "
Handling Ranked 2018 Porsche 911 Carrera GTS Coupe RWD better.
"Because it does...it’s a coupe not a sedan "
10
Jcogan writes:
The Shelby hands-down is a better drivers car. Hard to believe I’m saying this but after driving both I could...
Back Seats Ranked 2018 Ford Mustang Shelby GT350 Fastback RWD worse.
"Of course being a four-door sedan the M3’s rear seats are much more accessible and usable."
Family Car Ranked 2018 Ford Mustang Shelby GT350 Fastback RWD worse.
"Of course being a four-door sedan the M3’s rear seats are much more accessible and usable."
65
darkmann writes:
Great ride. Enough power to take one to fun places. Exceptional handling
Looks/Style Ranked 2018 BMW M3 CS Sedan RWD better.
"The added carbon fiber trim pieces make the car look slightly more special"
Front Seats Ranked 2018 BMW M3 CS Sedan RWD better.
"No difference from regular M3"
2021 Porsche 911
Carrera 4 Cabriolet AWD
No User Reviews

Specs

2018 BMW M3
CS Sedan RWD
2021 Porsche 911
Carrera 4 Cabriolet AWD
Powertrain 7-Speed Dual Clutch 8-Speed Dual Clutch
Drivetrain
RWD
AWD
Fuel Economy, City
16 MPG
18 MPG
Fuel Economy, Highway
22 MPG
24 MPG
Fuel Tank Volume 15.8 gal 17.6 gal
Engine
Fuel Type
Gasoline
Gasoline
Power
454 hp @ 6,250 RPM
379 hp @ 6,500 RPM
Torque
442 lb-ft @ 4,000 RPM
331 lb-ft @ 1,950 RPM
Cylinders
6 cylinders
6 cylinders
Compression Ratio
10.2:1
10.2:1
Displacement
3,000 cc
3,000 cc
Bore x Stroke
3.31 in x 3.53 in
3.58 in x 3.01 in
Safety
ABS Brakes Standard Standard
Driver Airbag Standard Standard
Passenger Airbag Standard Standard
Front Side Airbags Standard --
Curtain Airbags Standard --
NHTSA Crash Test Results
Comfort and Convenience
Leather Seats Standard --
Air Conditioning Standard Standard
CD Player Standard --
Radio Standard Standard
Power Windows Standard Standard
Power Door Locks Standard Standard
Driver Power Seats Standard Standard
Passenger Power Seats Standard Standard
Interior
Maximum Seating 5 seats 4 seats
Front Legroom 42 in --
Back Legroom 35.1 in --
Payload and Towing
Cargo Volume 12 cu ft 4.6 cu ft
Maximum Payload -- 883 lbs
Exterior
Length 184.5 in 177.9 in
Width 80.2 in 79.7 in
Height 56.1 in 51.1 in
Wheelbase 110.7 in 96.5 in

Available Options

2018 BMW M3
CS Sedan RWD

Exterior Colors

  • Alpine White
  • Black Sapphire Metallic
  • Frozen Dark Blue II
  • Lime Rock Grey
  • San Marino Blue Metallic

Option Packages

  • Executive Package
  • M Carbon Ceramic Brake
2021 Porsche 911
Carrera 4 Cabriolet AWD

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