2018 Mercedes-Benz C 300 vs 2018 BMW 3 Series Comparison

2018 Mercedes-Benz C 300 vs 2018 BMW 3 Series

2018 Mercedes-Benz C 300 2018 BMW 320i
Engine Power
  241 hp 180 hp
Engine Torque
  273 ft-lbs 200 ft-lbs
  Standard Available on Other Styles

2018 Mercedes-Benz C 300 vs 2018 BMW 3 Series

Serving Burlington, Lowell, and , MA

You’ve got lots of luxury choices, and the 2018 Mercedes-Benz C-Class works hard to earn your attention. Among its rivals, you’ll find the 2018 BMW 3 Series. In a head-to-head comparison, we think you’ll find the Mercedes-Benz holds its own and then pulls out ahead.

Style and Spaciousness

Calling the BMW 3 Series “precise, clinical and cold” compared to the C 300, Consumer Reports praise the Mercedes-Benz for its “posh overall feel”. As you may expect at this luxury level, every inch of the Mercedes-Benz has been crafted with care. Even the tactile knobs and dash tech exhibit an attention to detail like few automakers can achieve. The large vents with silver grilles proclaim the magnificent sound of a Burmester audio system. The Car Connection calls out the base BMW 3-Series for limited standards while praising the Mercedes-Benz C 300 for being well-equipped. For instance, you’ll find a power driver’s chair on the C 300 but not on the 3 Series at the entry level price. The C 300 has some new standards for 2018 including a power sunroof.

When it comes to size, the two are very similar in terms of headroom and legroom on both rows. Even the trunk sizes are comparable. Still there are a few differences according to a comparison by the Car Connection. The Mercedes-Benz claims a 35-inch turning circle while the BMW needs 37 inches. The Mercedes-Benz has a 17.4-gallon fuel tank while the BMW has a 15.8-gallon tank.


The BMW base engine is an intercooled turbo I-4. It generates 180 horsepower and 200 lb-ft of torque. In the hands of Mercedes-Benz engineers, a similar intercooled turbo I-4 kicks out 241 horsepower and 273 lb.-ft. of torque. A new nine-speed automatic manages the power outlay with extreme precision. Despite having 61 fewer horses under the hood, the BMW 3 Series can claim only one extra mpg in combined fuel economy. Consumer Reports complains that the 3 Series has a choppy ride. The C-Class, on the other hand, is more engaging for the driver, and riders will find travel is more comfortable and quiet, according the magazine’s staff writers.


Smaller vehicles need to work harder to keep you safe. As such, it is surprising that 3 Series is charging extra for an autobrake. The 2018 Mercedes-Benz C 300 has a standard automatic emergency braking system that is paired with standard forward collision warning system. An additional safety system is also on board, ready to keep you alert to distracted or sleepy driving. Only the C-Class is offering an active lane control system. It helps the C 300 follow leader traffic, maintaining a safe trajectory. Available on both, you can get a blind spot monitor, a head up display, a surround-view camera system, and adaptive cruise control. Active park assist relieves driver stress by providing a safer way to park.

We invite you to check out the stylish 2018 Mercedes-Benz C 300, which is now available at our dealership in Burlington. Stop by and take a test drive today.

* Based on year model EPA mileage ratings. Use for comparison purposes only. Your mileage will vary depending on how you drive and maintain your vehicle.