The 2026 Mercedes-Benz C 300 and 2026 BMW 330i start from the same place. Each uses a 255-hp, 2.0-liter turbocharged four-cylinder engine. Each comes standard with rear-wheel drive, and all-wheel drive is available on both. The differences show up in the details.
The C 300 leads in front headroom, rear-seat space, and driving range per tank. It also earned a 2026 IIHS TOP SAFETY PICK. The 330i counters with a lower starting MSRP, quicker acceleration, a larger standard touchscreen, higher EPA-estimated fuel economy, and a bigger trunk. Below, Mercedes-Benz of El Cajon compares both sedans so drivers in El Cajon, La Mesa, and San Diego can choose with confidence.
Rear-wheel-drive models are shown. Specifications come from Mercedes-Benz USA, BMW USA, Kelley Blue Book, and FuelEconomy.gov.
| Category | 2026 Mercedes-Benz C 300 | 2026 BMW 330i | Edge |
|---|---|---|---|
| Starting MSRP | $51,000 MSRP | $49,350 MSRP | BMW 330i |
| Horsepower / Torque | 255 hp / 295 lb-ft | 255 hp / 295 lb-ft | Tie |
| 0–60 mph | 6.0 sec | 5.6 sec | BMW 330i |
| EPA-Estimated Combined MPG | 29 mpg | 31 mpg | BMW 330i |
| Calculated Range per Tank | About 505 miles | About 484 miles | Mercedes-Benz C 300 |
| Front Headroom | 40.0 in | 38.7 in | Mercedes-Benz C 300 |
| Rear Legroom | 36.0 in | 35.2 in | Mercedes-Benz C 300 |
| Trunk Space | 11.6 cu ft | 16.9 cu ft | BMW 330i |
| Center Touchscreen | 11.9 in | 14.9 in | BMW 330i |
Manufacturer’s Suggested Retail Price (MSRP) for new vehicles includes manufacturer and distributor options and delivery, process and handling fees, which may be subject to change at any time. MSRP excludes taxes, title, license and dealer installed options, accessories, fees and charges. MSRP is not the dealer advertised price. Dealer price will vary. The dealer sets the final price.
EPA-estimated fuel economy figures are for comparison purposes only. Your actual mileage will vary depending on driving conditions, how you drive and maintain your vehicle, battery age/condition, and other factors.
Both brands charge the same amount to add all-wheel drive. That keeps the price gap between the Mercedes-Benz C 300 and BMW 330i the same in either configuration.
| Model | Drivetrain | Starting MSRP |
|---|---|---|
| Mercedes-Benz C 300 | Rear-wheel drive | $51,000 MSRP |
| Mercedes-Benz C 300 4MATIC | 4MATIC all-wheel drive | $53,000 MSRP |
| BMW 330i | Rear-wheel drive | $49,350 MSRP |
| BMW 330i xDrive | xDrive all-wheel drive | $51,350 MSRP |
Manufacturer’s Suggested Retail Price (MSRP) for new vehicles includes manufacturer and distributor options and delivery, process and handling fees, which may be subject to change at any time. MSRP excludes taxes, title, license and dealer installed options, accessories, fees and charges. MSRP is not the dealer advertised price. Dealer price will vary. The dealer sets the final price.
Mercedes-Benz groups popular upgrades into two main packages, according to U.S. News & World Report.
| Package | What It Adds |
|---|---|
| Exclusive Trim | 15-speaker Burmester 3D surround sound, enhanced ambient lighting, and a surround-view camera system |
| Pinnacle Trim | Everything in the Exclusive Trim package, plus a head-up display and heat- and noise-insulating acoustic glass |
Compare every configuration on our 2026 Mercedes-Benz C-Class specs and trims page.
Figures come from Mercedes-Benz USA, BMW USA, and Kelley Blue Book.
| Specification | Mercedes-Benz C 300 / C 300 4MATIC | BMW 330i / 330i xDrive |
|---|---|---|
| Engine | 2.0L inline-4 turbo with mild hybrid drive | 2.0L TwinPower Turbo inline-4 |
| Horsepower | 255 hp @ 5,800 rpm | 255 hp @ 4,700 rpm |
| Torque | 295 lb-ft @ 2,000–3,200 rpm | 295 lb-ft @ 1,600 rpm |
| Transmission | 9G-TRONIC 9-speed automatic | 8-speed automatic |
| Drivetrain | Rear-wheel drive or 4MATIC all-wheel drive | Rear-wheel drive or xDrive all-wheel drive |
| 0–60 mph | 6.0 sec (both drivetrains) | 5.6 sec (330i) / 5.4 sec (330i xDrive) |
Both engines make the same peak output, but they deliver it differently. The C 300 uses a 48-volt integrated starter-generator. It can add up to 20 hp and 148 lb-ft of torque for immediate response. The BMW 330i is quicker to 60 mph by 0.4 second with rear-wheel drive and by 0.6 second with xDrive. The C 300 rides on a 4-link front and 5-arm multilink rear suspension.
If all-wheel drive is on your list, learn how Mercedes-Benz 4MATIC all-wheel drive works before your test drive.
The BMW 330i earns higher EPA-estimated fuel economy in both configurations. However, the Mercedes-Benz C 300 has a larger 17.4-gallon fuel tank, while the 330i holds 15.6 gallons. That bigger tank lets the C 300 travel farther between fill-ups. Both sedans call for premium unleaded fuel.
Calculated range multiplies tank size by the EPA-estimated combined rating and is shown for comparison only. Ratings for the BMW 330i and BMW 330i xDrive are listed at FuelEconomy.gov. Mercedes-Benz figures come from Mercedes-Benz USA for the C 300 and C 300 4MATIC.
| Model | EPA-Estimated City / Hwy / Combined MPG | Fuel Tank | Calculated Range per Tank |
|---|---|---|---|
| Mercedes-Benz C 300 | 25 / 35 / 29 | 17.4 gal | About 505 miles |
| Mercedes-Benz C 300 4MATIC | 24 / 33 / 27 | 17.4 gal | About 470 miles |
| BMW 330i | 28 / 35 / 31 | 15.6 gal | About 484 miles |
| BMW 330i xDrive | 26 / 34 / 29 | 15.6 gal | About 452 miles |
EPA-estimated fuel economy figures are for comparison purposes only. Your actual mileage will vary depending on driving conditions, how you drive and maintain your vehicle, battery age/condition, and other factors.
See the full breakdown on our 2026 Mercedes-Benz C-Class MPG by trim page.
Both sedans seat five. The Mercedes-Benz C 300 gives front occupants more headroom, and rear passengers get more legroom and shoulder room. Front legroom is within 0.3 inch. The BMW 330i counters with a larger trunk and a 0.1-inch edge in rear headroom. Dimensions come from Mercedes-Benz USA, Kelley Blue Book, and J.D. Power.
| Dimension | Mercedes-Benz C 300 | BMW 330i |
|---|---|---|
| Seating capacity | 5 | 5 |
| Front headroom | 40.0 in | 38.7 in |
| Rear headroom | 37.5 in | 37.6 in |
| Front legroom | 41.7 in | 42.0 in |
| Rear legroom | 36.0 in | 35.2 in |
| Rear shoulder room | 55.6 in | 54.6 in |
| Trunk space | 11.6 cu ft | 16.9 cu ft |
Both sedans include wireless Apple CarPlay, wireless Android Auto, and a wireless charging pad. The BMW 330i has the larger center screen, a standard 14.9-inch touchscreen. The Mercedes-Benz C 300 uses a portrait-oriented 11.9-inch MBUX touchscreen that responds to voice commands beginning with “Hey Mercedes,” according to CarGurus. Both include a 12.3-inch digital instrument cluster. Equipment details come from U.S. News & World Report reviews of the C-Class and 3 Series.
| Feature | Mercedes-Benz C 300 | BMW 330i |
|---|---|---|
| Center touchscreen | 11.9-in portrait MBUX display | 14.9-in touchscreen |
| Digital instrument cluster | 12.3 in | 12.3 in |
| Apple CarPlay / Android Auto | Wireless, standard | Wireless, standard |
| Wireless charging | Standard | Standard |
| Standard speakers | 5 | 10 |
| Available premium audio | 15-speaker Burmester 3D (Exclusive Trim package) | 16-speaker Harman Kardon |
| Feature | Mercedes-Benz C 300 | BMW 330i |
|---|---|---|
| Front seats | Heated, power, with memory | Heated, 12-way power, with driver memory |
| Upholstery | Synthetic leather | Synthetic leather |
| Roof | Moonroof | Moonroof |
| Climate control | Dual-zone automatic | Dual-zone automatic |
| Ambient lighting | 64-color LED | Standard ambient lighting |
The Insurance Institute for Highway Safety named the 2026 Mercedes-Benz C-Class sedan a 2026 TOP SAFETY PICK.
| IIHS Evaluation | Rating |
|---|---|
| 2026 award | TOP SAFETY PICK |
| Small overlap front | Good |
| Moderate overlap front | Good |
| Side | Good |
| Pedestrian front crash prevention (standard system) | Acceptable |
| Pedestrian front crash prevention (optional system) | Good |
Every C 300 includes these systems, according to Mercedes-Benz USA and U.S. News & World Report.
| System | What It Does |
|---|---|
| Automatic emergency braking with pedestrian detection | Can apply the brakes automatically when it detects an impending frontal collision. |
| Blind Spot Assist | Alerts the driver to a vehicle in the blind spot with a red icon in the side mirror. |
| Exit Warning Assist | After parking, warns occupants of approaching vehicles, cyclists, or pedestrians before a door opens. |
Driver-assistance and advanced safety systems are supplemental aids and are not substitutes for safe and attentive driving. Availability, operation, and effectiveness vary by trim and equipment and depend on factors including road, weather, traffic, and vehicle condition. Always keep your hands on the wheel and your eyes on the road. See your owner’s manual for system limitations and details.
Both automakers back these sedans with the same new-vehicle warranty terms, according to Kelley Blue Book specifications for the Mercedes-Benz C 300 and BMW 330i.
| Coverage | Mercedes-Benz C 300 | BMW 330i |
|---|---|---|
| Basic (new vehicle limited) | 4 years/50,000 miles | 4 years/50,000 miles |
| Powertrain | 4 years/50,000 miles | 4 years/50,000 miles |
This information is provided for general educational purposes only and does not constitute legal advice. Warranty coverage depends on the specific terms of your vehicle’s warranty agreement. Consult your owner’s manual or a qualified legal professional for guidance on your individual situation.
Your priorities decide the winner. Use the quick guide below. Blind-spot monitoring is optional on the BMW 330i, according to Cars.com.
| Choose the Mercedes-Benz C 300 if you want | Choose the BMW 330i if you want |
|---|---|
| More front headroom | A lower starting MSRP |
| More rear legroom and shoulder room | Quicker 0–60 mph acceleration |
| More miles per tank | Higher EPA-estimated fuel economy |
| Standard blind-spot monitoring | A larger trunk |
| A 2026 IIHS TOP SAFETY PICK | A larger standard touchscreen |
For drivers who spend real time in the cabin or often carry passengers in back, the C 300 makes the stronger everyday case. To see how the two brands compare beyond these sedans, read our Mercedes-Benz vs. BMW comparison. You can also weigh a step up in size with our 2026 Mercedes-Benz C-Class vs. E-Class guide.
The Mercedes-Benz C 300 starts at $51,000 MSRP, while the BMW 330i starts at $49,350 MSRP. That $1,650 MSRP difference also applies to the all-wheel-drive versions. In return, the C 300 offers more front headroom, more rear legroom and shoulder room, a longer calculated range per tank, standard blind-spot monitoring, and a 2026 IIHS TOP SAFETY PICK.
Manufacturer’s Suggested Retail Price (MSRP) for new vehicles includes manufacturer and distributor options and delivery, process and handling fees, which may be subject to change at any time. MSRP excludes taxes, title, license and dealer installed options, accessories, fees and charges. MSRP is not the dealer advertised price. Dealer price will vary. The dealer sets the final price.
The Mercedes-Benz C 300 4MATIC. Its 17.4-gallon tank and EPA-estimated 27 mpg combined work out to about 470 miles per tank. The BMW 330i xDrive’s 15.6-gallon tank and EPA-estimated 29 mpg combined work out to about 452 miles.
EPA-estimated fuel economy figures are for comparison purposes only. Your actual mileage will vary depending on driving conditions, how you drive and maintain your vehicle, battery age/condition, and other factors.
The BMW 330i has the larger center display, a standard 14.9-inch touchscreen. The Mercedes-Benz C 300 uses a portrait-oriented 11.9-inch MBUX touchscreen. Both sedans include a 12.3-inch digital instrument cluster.
The Mercedes-Benz C 300 is rear-wheel drive. The C 300 4MATIC model includes 4MATIC all-wheel drive as standard equipment, just as BMW offers xDrive all-wheel drive on the 330i xDrive.
The Mercedes-Benz C 300 offers 36.0 inches of rear legroom versus 35.2 inches in the BMW 330i. It also offers 55.6 inches of rear shoulder room versus 54.6 inches.
Mercedes-Benz covers the 2026 C 300 with a 4-year/50,000-mile New Vehicle Limited Warranty, including powertrain coverage. BMW offers the same term on the 330i.
This information is provided for general educational purposes only and does not constitute legal advice. Warranty coverage depends on the specific terms of your vehicle’s warranty agreement. Consult your owner’s manual or a qualified legal professional for guidance on your individual situation.
The best way to settle the C 300 vs. 330i question is from the driver’s seat. Visit Mercedes-Benz of El Cajon at 1111 Wagner Drive in El Cajon to compare the C 300 and C 300 4MATIC in person. You can also browse our C-Class inventory online before your visit or call our sales team at (888) 881-6670.
Manufacturer’s Suggested Retail Price (MSRP) for new vehicles includes manufacturer and distributor options and delivery, process and handling fees, which may be subject to change at any time. MSRP excludes taxes, title, license and dealer installed options, accessories, fees and charges. MSRP is not the dealer advertised price. Dealer price will vary. The dealer sets the final price.
EPA-estimated fuel economy figures are for comparison purposes only. Your actual mileage will vary depending on driving conditions, how you drive and maintain your vehicle, battery age/condition, and other factors.
Driver-assistance and advanced safety systems are supplemental aids and are not substitutes for safe and attentive driving. Availability, operation, and effectiveness vary by trim and equipment and depend on factors including road, weather, traffic, and vehicle condition. Always keep your hands on the wheel and your eyes on the road. See your owner’s manual for system limitations and details.
This information is provided for general educational purposes only and does not constitute legal advice. Warranty coverage depends on the specific terms of your vehicle’s warranty agreement. Consult your owner’s manual or a qualified legal professional for guidance on your individual situation.
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