Mercedes-Benz C-Class vs BMW M3 Compare price, expert/user reviews, mpg, engines, safety, cargo capacity and other specs at a glance.

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

New Car Pricing New listing price comparison and analysis.

2021 Mercedes-Benz C-Class
C 300 4MATIC Cabriolet AWD
MSRP
$56,700
Invoice
$53,298
Average Price Paid
$56,700
5 listings nationwide

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2022 BMW M3
Competition RWD
MSRP
$72,800
Invoice
$68,205
Average Price Paid
$72,800
8 listings nationwide

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Pricing Analysis Price analysis based on recent sales data applied to current trim without options.

2021 Mercedes-Benz C-Class
C 300 4MATIC Cabriolet AWD
Fair Price
$57,429
Good Price
$54,356
Great Price
$52,598
2022 BMW M3
Competition RWD
Fair Price
$74,577
Good Price
$72,459
Great Price
$71,247

Used Car Pricing Used listing price comparison and analysis.

2021 Mercedes-Benz C-Class
C 300 4MATIC Cabriolet AWD
CarGurus Instant Market Value
$63,692
1 listings nationwide

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2022 BMW M3
Competition RWD
CarGurus Instant Market Value
$81,545
4 listings nationwide

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Expert Reviews Reviews from CarGurus experts.

2021 Mercedes-Benz C-Class
C 300 4MATIC Cabriolet AWD
No Expert Reviews
2022 BMW M3
Competition RWD
Stephen Edelstein Preview:

The BMW M3 has long been the gold standard compact performance/luxury car. Though it has grown through the years (and become exclusively a sedan), it retains that artful blend of thril...

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

2021 Mercedes-Benz C-Class
C 300 4MATIC Cabriolet AWD
Aldo writes:
It was good
2022 BMW M3
Competition RWD
No User Reviews

Specs

2021 Mercedes-Benz C-Class
C 300 4MATIC Cabriolet AWD
2022 BMW M3
Competition RWD
Powertrain 9-Speed Automatic 8-Speed Automatic
Drivetrain
AWD
RWD
Fuel Economy, City
22 MPG
16 MPG
Fuel Economy, Highway
30 MPG
23 MPG
Fuel Tank Volume 17.4 gal 15.6 gal
Engine
Fuel Type
Gasoline
Gasoline
Power
255 hp @ 5,800 RPM
503 hp @ 6,250 RPM
Torque
273 lb-ft @ 1,800 RPM
479 lb-ft @ 2,750 RPM
Cylinders
4 cylinders
6 cylinders
Compression Ratio
10.5:1
9.3:1
Displacement
2,000 cc
3,000 cc
Bore x Stroke
3.27 in x 3.62 in
3.31 in x 3.54 in
Safety
ABS Brakes Standard Standard
Driver Airbag Standard Standard
Passenger Airbag Standard Standard
Front Side Airbags Standard Standard
Rear Side Airbags Standard --
Curtain Airbags Standard Standard
NHTSA Crash Test Results
Comfort and Convenience
Leather Seats -- Standard
Air Conditioning Standard 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 4 seats 5 seats
Front Legroom 42 in 41.6 in
Back Legroom 32 in 35.6 in
Payload and Towing
Cargo Volume 8.8 cu ft 13 cu ft
Maximum Payload 882 lbs 860 lbs
Exterior
Length 184.5 in 189.1 in
Width 79.4 in 81.4 in
Height 55.8 in 56.4 in
Wheelbase 111.8 in 112.5 in

Available Options

2021 Mercedes-Benz C-Class
C 300 4MATIC Cabriolet AWD

Exterior Colors

  • Black
  • Brilliant Blue Metallic
  • DESIGNO Cardinal Red Metallic
  • DESIGNO Diamond White Metallic
  • DESIGNO Selenite Grey MAGNO
  • Graphite Grey Metallic
  • Iridium Silver Metallic
  • Lunar Blue Metallic
  • MANUFAKTUR Cardinal Red Metallic
  • MANUFAKTUR Diamond White Metallic
  • Mojave Silver Metallic
  • Obsidian Black Metallic
  • Polar White
  • Selenite Grey Metallic

Option Packages

  • AMG Line
  • DESIGNO Bengal Red Nappa Leather Package
  • Driver Assistance Package
  • Exterior Lighting Package
  • Head-Up Display
  • MB Entry Navigation
  • Multimedia Package
  • Parking Assistance Package
  • Black, Leather Upholstery
  • Cranberry Red, Leather Upholstery
  • Magma Grey/Black, Leather Upholstery
  • Porcelain/Black, Leather Upholstery
  • Saddle Brown/Black, Leather Upholstery
  • Wheels: 19" 10-Spoke
  • Wheels: 19" AMG MULTISPOKE
  • Wheels: 19" AMG MULTISPOKE W/Black Accents
  • Wheels: 19" AMG Twin 5-Spoke W/Black Accents
  • Wheels: 19" Twin 5-Spoke
2022 BMW M3
Competition RWD

Exterior Colors

  • AVENTURIN Red Metallic
  • Alpine White
  • Black Sapphire Metallic
  • Brooklyn Grey Metallic
  • Frozen Brilliant White Metallic
  • Frozen PORTIMAO Blue Metallic
  • Individual DRAVIT Grey Metallic
  • Isle Of Man Green Metallic
  • Oxide Grey Metallic
  • PORTIMAO Blue Metallic
  • SAO Paulo Yellow
  • Skyscraper Gray Metallic
  • TANZANITE Blue II Metallic
  • Toronto Red Metallic

Option Packages

  • M Driver's Package
  • BMW Individual Aluminum Fabric High-Gloss
  • Carbon Fiber Trim
  • Driving Assistance Professional Package
  • Executive Package
  • Icon Adaptive Led Headlights W/LASERLIGHT
  • Individual Piano Black Finish Trim
  • M Carbon Exterior Package
  • M Drive Professional
  • Parking Assistance Package
  • BMW Individual Fine-Wood Trim
  • Fiona Red/Black, Full Merino Leather Upholstery (VB)
  • Fjord Blue/Black, Full Merino Leather Upholstery (ZB)
  • Ivory White, Full Merino Leather Upholstery (ZB)
  • KYALAMI Orange/Black, Full Merino Leather Upholstery
  • SILVERSTONE/Black, Full Merino Leather Upholstery
  • TARTUFO/Black, Full Merino Leather Upholstery (VB)
  • YAS Marina Blue/Black, Full Merino Leather Upholstery
  • Black, Full Merino Leather Upholstery
  • M Carbon Bucket Seats
  • M Carbon Ceramic Brakes

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