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261 West Putnam Ave, Greenwich, CT, 06830

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Dealership Info

Phone Numbers:Sales Hours:
  • Mon - Fri9:00 AM - 7:00 PM
  • Sat9:00 AM - 5:00 PM
  • SunClosed
Service Hours:
  • Mon - Fri7:30 AM - 6:00 PM
    (Night drop box available on Saturday's. )
  • Sat8:00 AM - 4:00 PM
  • SunClosed
Parts Hours:
  • Mon - Fri7:30 AM - 6:00 PM
  • Sat8:00 AM - 4:00 PM
  • SunClosed

2021 BMW 3 Series vs. 2021 Mercedes-Benz C-Class

Exterior view of the 2021 Mercedes-Benz C-Class vs 2021 BMW 3 Series
2021 Mercedes-Benz C-Class


2021 BMW 3 Series
255-hp 2.0L turbo 4-cylinder

Base Engine

255-hp 2.0L turbo 4-cylinder

Available Powertrains

9-speed Automatic


8-speed Automatic

Driver Attention Monitor

Feature Not Offered


12.3 Inches as Standard

Central Touchscreen Display

8.8 Inches as Standard

If you’re dreaming of a new luxury sedan for your Greenwich commute, you’re probably curious how the 2021 BMW 3 Series vs. Mercedes-Benz C-Class compare. Both models have a lusciously appointed, elegant cabin, but the C-Class has more options and amenities–not to mention a stronger engine lineup. Mercedes-Benz of Greenwich brings you this BMW 3 Series vs. Mercedes-Benz C-Class comparison so you can make the right decision for your lifestyle. When you’re ready to explore the C-Class in person, all you need to do is contact Mercedes-Benz of Greenwich.



C-Class vs. 3 Series: Engine Performance

Rye drivers like to have options, and most expect a lot from their luxury cars. Fortunately, the C-Class lives up to its reputation as a high-performance machine. When comparing the BMW 3 Series vs. Mercedes-Benz C-Class, you’ll notice that these two models offer similar base-level engines, but the comparison stops there.  If you want a more powerful engine and a thrill behind the wheel, you can get up to 503 horsepower in the C-Class. The BMW 3 Series, by contrast, maxes out at only 382 horsepower! Look at all the powertrain choices you have in the Mercedes-Benz C-Class below:

2021 Mercedes-Benz C-Class Sedan: Powertrains

  • 2.0L I4 turbo with 255 hp and 273 lb-ft of torque (C 300 Sedan, C 300 4MATIC® Sedan)
  • AMG®-enhanced 3.0L V6 biturbo with 385 hp and 384 lb-ft of torque (AMG® C 43 Sedan)
  • Handcrafted AMG® 4.0L V8 biturbo with 469 hp and 479 lb-ft of torque (AMG® C 63 Sedan)
  • Handcrafted AMG® 4.0L V8 biturbo with 503 hp and 516 lb-ft of torque (AMG® C 63 S Sedan)

The entry-level Mercedes-Benz C-Class includes rear-wheel drive, and like the rest of the C-Class lineup, comes standard with a 9G-TRONIC® 9-speed automatic transmission. As you move up the trim levels, 4MATIC® AWD becomes standard, and if you progress to the AMG® line, you’ll be rewarded with the iconic AMG® performance 4MATIC® AWD!

2021 BMW 3 Series Sedan: Powertrains

  • 2.0L turbocharged 4-cylinder with 255 hp and 294 lb-ft of torque
  • 2.0L turbocharged 4-cylinder & Electric Motor with 288 hp and 310 lb-ft of torque
  • 3.0-liter BMW M TwinPower Turbo inline-6 with 382 hp and 368 lb-ft of torque

All BMW 3 Series models have an 8-speed automatic transmission, meaning that again, the C-Class has the edge. Plus, all 3 Series models have xDrive AWD as an option rather than a standard feature. That means you have to pay for a significant upgrade no matter which BMW 3 Series trim you settle on. The bottom line is that the C-Class offers three distinct engines with more power than the most potent 3 Series, and many trims that come with standard 4MATIC® AWD

Are There Any Other German Sedan Worth Considering?

If you’re interested in comparing the Audi A4 vs. BMW 3 Series vs. Mercedes-Benz C-Class, you should know that the 2021 A4 starts with only 201 horsepower. Upgrade, and you’ll be able to access just 261 horsepower. That’s another way of saying that the C-Class is at the top of its class when it comes to compact German luxury sedans. Still, if you’re looking for more features, you might compare the C-Class to the E-Class!


C-Class vs. 3 Series: Premium Features

No matter which sedan you choose for your Stamford drives, you’ll be comfortable and connected with either sedan. Both offer features such as:

  • Power front seats with memory
  • Selectable drive modes
  • Genuine wood trim
  • 40/20/40 split fold-down rear seats
  • And much more!

However, the Mercedes-Benz C-Class goes beyond your expectations with more premium amenities like:

  • HANDS-FREE ACCESS® is standard in the Mercedes-Benz C-Class but requires an upgrade in the BMW 3 Series. If you’ve ever struggled to open the trunk of your vehicle with your hands full of groceries, you know how outstanding this feature can be!
  • ATTENTION ASSIST® gets to know your normal driving behaviors and reminds you when it’s time to take a break. Like the optional Car-to-X-Communication, which allows drivers to share information with each other over the air. It’s an exclusive feature of the Mercedes-Benz brand.
  • The 2021 C-Class Sedan comes standard with an intuitive 12.3-inch central touchscreen display and a 12.3-inch digital gauge cluster. The 3 Series offers just an 8.8-inch display.

Ask yourself, why should you pay extra for more premium features that the C-Class already offers as standard?


Test Drive a Mercedes-Benz C-Class at Mercedes-Benz of Greenwich

Now that we’ve compared the C-Class vs. 3 Series, contact us when you’re ready to take a test drive of a Mercedes-Benz C-Class. We’ll take you for a test drive around New Canaan and explain all of your finance options. You can complete a finance application online to get the ball rolling today.


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(888) 249-6454

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261 West Putnam Ave • Greenwich, CT 06830

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Today's Hours:

Open Today! Sales: 9am-7pm

Open Today! Service: 7:30am-6pm

Open Today! Parts: 7:30am-6pm

Mercedes-Benz of Greenwich 41.024908, -73.635592.