2025 BMW 3 Series vs 2025 Mercedes-Benz C-Class
Comparison Overview
The 2025 automotive contest between the BMW 3 Series and the Mercedes-Benz C-Class pits Bavarian sharpness against Stuttgart sophistication. The 2025 BMW 3 Series grabs attention with its slightly more accessible starting MSRP of $45,950, while boasting a superior combined fuel economy of 31 MPG, offering superior daily running costs. Both machines share an identical power output of 255 hp and 295 lb-ft of torque, suggesting thrilling straight-line performance. However, the C-Class commands a wider physical footprint at 74.4 inches across, compared to the BMW’s 71.9 inches, which subtly impacts maneuverability. The 3 Series is the clear cargo king, offering a practical 16.9 cu ft versus the C-Class's more restrictive 11.6 cu ft, a significant difference for weekly errands. Ultimately, the BMW balances efficiency and utility slightly better while delivering that signature rear-wheel-drive fun factor, making it the more compelling overall package.
Size Comparison
Performance
Fuel Efficiency
Full Specifications
Our Verdicts
2025 BMW 3 Series
The 2025 BMW 3 Series wins for commuters by delivering a better combined 31 MPG versus the C-Class’s 29 MPG.
2025 BMW 3 Series
With 16.9 cu ft of cargo space compared to 11.6 cu ft, the 3 Series easily handles family luggage and gear.
2025 BMW 3 Series
While power is identical, the BMW's reputation for sharper chassis tuning and its slightly smaller dimensions suggest a more engaging RWD driving experience.
2025 BMW 3 Series
The 2025 BMW 3 Series starts $2,500 lower at $45,950 and offers better fuel economy for long-term ownership savings.
Choose the BMW 3 Series if...
- You prioritize efficiency, as the 3 Series achieves 31 combined MPG.
- You need maximum luggage space, as the 16.9 cu ft trunk dwarfs the competitor's capacity.
- You want the brand's benchmark driving dynamics at a lower entry price of $45,950.
Choose the Mercedes-Benz C-Class if...
- You prefer the ultra-smooth operation of a 9-speed automatic transmission over the 8-speed.
- You desire a slightly wider and longer sedan body for presence, measuring 187.0 inches in length.
- You lean toward Mercedes-Benz interior luxury styling, despite the identical 255 hp output.
Key Dimensions
| Dimension | BMW 3 Series | Mercedes-Benz C-Class |
|---|---|---|
| Length | 185.9" | 187.0" |
| Width | 71.9" | 74.4" |
| Height | 56.8" | 56.6" |
| Wheelbase | 112.2" | 112.8" |
Features Comparison
Safety
| Feature | BMW | Mercedes-Benz |
|---|---|---|
| Driver Attention Alert | ✓ | ✓ |
| Pre-Collision Safety System | ✓ | ✓ |
| Post-Collision Safety System | ✓ | ✓ |
| Dual Front Side-Mounted Airbags | ✓ | ✓ |
| Front Head Airbags | ✓ | ✓ |
| Rear Head Airbags | ✓ | ✓ |
| Passenger Airbag Occupant Sensing Deactivation | ✓ | ✓ |
| Electronic Stability Control | ✓ | ✓ |
| Traction Control System | ✓ | ✓ |
| LATCH System | ✓ | ✓ |
| Rear Door Child Safety Locks | ✓ | ✓ |
| Anti-lock Brakes (ABS) | 4-Wheel | 4-Wheel |
| Brake Drying | ✓ | ✓ |
| Front Ventilated Disc Brakes | ✓ | ✓ |
| Rear Ventilated Disc Brakes | ✓ | ✓ |
| Brake Preparation System | ✓ | ✓ |
| Brake Assist | ✓ | ✓ |
| Tire Pressure Monitoring System | ✓ | ✓ |
| Automatic Headlights | ✓ | ✓ |
| Headlight Delay-Off | ✓ | ✓ |
| LED Headlights | ✓ | ✓ |
| Self-Leveling Headlights | ✓ | — |
| Daytime Running Lights | ✓ | ✓ |
| Integrated Turn Signal Mirrors | ✓ | ✓ |
| Front Headrests | 2 | 2 |
| Front Height Adjustable Headrests | ✓ | — |
| Rear Headrests | 3 | 3 |
| Rear Height Adjustable Headrests | ✓ | ✓ |
| Rear Center 3-Point Seatbelt | ✓ | ✓ |
| Anti-Theft Alarm System (Remote) | ✓ | ✓ |
| Engine Immobilizer | ✓ | ✓ |
| Blind Spot Monitor | — | ✓ |
| Front Power Adjustable Headrests | — | ✓ |
Engine
| Feature | BMW | Mercedes-Benz |
|---|---|---|
| Base Engine Displacement | 2.0 L | 2.0 L |
| Number of Cylinders | inline 4 | inline 4 |
| Base Engine Type | mild hybrid | mild hybrid |
| Horsepower | 255 hp @ 4700 rpm | 255 hp @ 5800 rpm |
| Torque | 295 lb-ft @ 1600 rpm | 295 lb-ft @ 2000 rpm |
| Number of Valves | 16 | 16 |
| Camshaft Type | Double overhead cam (DOHC) | Double overhead cam (DOHC) |
| Variable Valve Timing | Variable | Variable |
| Fuel Injection Type | ✓ | ✓ |
Drive Train
| Feature | BMW | Mercedes-Benz |
|---|---|---|
| Transmission Type | 8-speed shiftable automatic | 9-speed shiftable automatic |
| Drivetrain Type | rear wheel drive | rear wheel drive |
Fuel
| Feature | BMW | Mercedes-Benz |
|---|---|---|
| Fuel Type | premium unleaded (required) | premium unleaded (required) |
| EPA Fuel Economy (City/Highway) | 28/35 MPG | 25/35 MPG |
| EPA Fuel Economy (Combined) | 31 MPG | 29 MPG |
| EPA Driving Range (City/Highway) | 436.8/546.0 mi. | 435.0/609.0 mi. |
| Fuel Tank Capacity | 15.6 gal. | 17.4 gal. |
Comfort & Convenience
| Feature | BMW | Mercedes-Benz |
|---|---|---|
| Push Button Start | ✓ | ✓ |
| Tilt and Telescopic Steering Wheel | ✓ | — |
| Transmission Controls on Steering Wheel | ✓ | ✓ |
| Cruise Control on Steering Wheel | ✓ | ✓ |
| Audio Controls on Steering Wheel | ✓ | ✓ |
| Electric Power Steering | ✓ | ✓ |
| Rear View Camera | ✓ | ✓ |
| Cruise Control | ✓ | ✓ |
| Universal Remote Transmitter | ✓ | ✓ |
| Front Cupholders | ✓ | ✓ |
| Rear Cupholders | ✓ | ✓ |
| Front Door Pockets | ✓ | ✓ |
| Rear Door Pockets | ✓ | ✓ |
| Front Seatback Storage | ✓ | ✓ |
| Dual Zone Climate Control | ✓ | ✓ |
| Rear Ventilation Ducts | ✓ | ✓ |
| Interior Air Filtration | ✓ | ✓ |
| Dual Vanity Mirrors | ✓ | ✓ |
| Auto-Dimming Rearview Mirror | ✓ | ✓ |
| Turn Signal Indicators in Mirrors | ✓ | ✓ |
| Power Tilt and Telescopic Steering Wheel | — | ✓ |
| Front Parking Sensors | — | ✓ |
| Rear Parking Sensors | — | ✓ |
| Automatic Parking Assist | — | ✓ |
| Wireless Charging Pad | — | ✓ |
| Leather Steering Wheel | — | ✓ |
In Car Entertainment
| Feature | BMW | Mercedes-Benz |
|---|---|---|
| Infotainment Display | 14.9 in | 11.9 in |
| AM/FM Stereo | ✓ | ✓ |
| Stereo Power | 205W | — |
| Speaker System | 10 | 5 |
| Subwoofer Count | 2 | 1 |
| Android Auto (Wireless) | ✓ | ✓ |
| Apple CarPlay (Wireless) | ✓ | ✓ |
| USB Port | ✓ | ✓ |
| USB Port with External Media Control | ✓ | ✓ |
| Satellite Radio | ✓ | ✓ |
| Satellite Radio Trial Period | 12 months | 6 months |
Power Feature
| Feature | BMW | Mercedes-Benz |
|---|---|---|
| One-Touch Power Windows | 4 | 4 |
| Moonroof Type | 1st Row Power Glass | 1st Row Power Glass |
| Remote Keyless Entry | ✓ | — |
| Heated Mirrors | ✓ | ✓ |
| Keyless Entry | — | ✓ |
Frontseats
| Feature | BMW | Mercedes-Benz |
|---|---|---|
| Front Head Room | 38.7 in. | 40.0 in. |
| Front Leg Room | 42.0 in. | 41.7 in. |
| Front Shoulder Room | 56.0 in. | 56.3 in. |
| Seat Material: Leatherette | ✓ | ✓ |
| Front Seat Type: Sport | ✓ | — |
| Driver Seat Power Adjustments | 10-way | 10-way |
| Driver Seat Manual Adjustments | 2-way | — |
| Driver Seat Height Adjustment | ✓ | ✓ |
| Driver Seat Lumbar Support | Power | Power |
| Driver Seat Thigh Extension | ✓ | ✓ |
| Driver Seat Memory Settings | 2 | 3 |
| Passenger Seat Power Adjustments | 10-way | 10-way |
| Passenger Seat Manual Adjustments | 2-way | — |
| Passenger Seat Height Adjustment | ✓ | ✓ |
| Passenger Seat Lumbar Support | Power | Power |
| Passenger Seat Thigh Extension | ✓ | — |
| Driver Seat Heating | Multi-level | Multi-level |
| Passenger Seat Heating | Multi-level | Multi-level |
| Front Seat Type: Bucket | — | ✓ |
| Passenger Seat Memory Settings | — | 3 |
Rearseats
| Feature | BMW | Mercedes-Benz |
|---|---|---|
| Rear Head Room | 37.6 in. | 37.5 in. |
| Rear Leg Room | 35.2 in. | 36.0 in. |
| Rear Shoulder Room | 54.6 in. | 55.6 in. |
| Split-Folding Rear Seatback | ✓ | ✓ |
| Folding Rear Seat Feature | ✓ | — |
| Pass-Thru Center Armrest | ✓ | — |
| Folding Center Armrest | — | ✓ |
Tires and Wheels
| Feature | BMW | Mercedes-Benz |
|---|---|---|
| Wheel Material | Alloy | Alloy |
| Wheel Size | 18 x 7.5 in | 18 x 8.5 in |
| Tire Size | 225/45R18 | 245/40R18 |
| Run Flat Tires | ✓ | ✓ |
Suspension
| Feature | BMW | Mercedes-Benz |
|---|---|---|
| Four-Wheel Independent Suspension | ✓ | ✓ |
| Front Stabilizer Bar | ✓ | ✓ |
| Rear Stabilizer Bar | ✓ | ✓ |
Warranty
| Feature | BMW | Mercedes-Benz |
|---|---|---|
| Basic Warranty | 4 yr./ 50000 mi. | 4 yr./ 50000 mi. |
| Drivetrain Warranty | 4 yr./ 50000 mi. | 4 yr./ 50000 mi. |
| Corrosion/Rust Warranty | 12 yr./ unlimited mi. | 4 yr./ 50000 mi. |
| Roadside Assistance | 4 yr./ unlimited mi. | 4 yr./ 50000 mi. |
| Complimentary Scheduled Maintenance | 3 yr./ 36000 mi. | — |
| Hybrid Component Warranty | — | 6 yr./ 62000 mi. |
Frequently Asked Questions
Common questions about comparing the 2025 BMW 3 Series and 2025 Mercedes-Benz C-Class.
Are the performance figures between the 2025 BMW 3 Series and C-Class identical?
Yes, both sedans officially share the same output specifications. Both the 2025 BMW 3 Series and the 2025 Mercedes-Benz C-Class produce an identical 255 horsepower and 295 lb-ft of torque.
Which car is more fuel-efficient for daily driving?
The 2025 BMW 3 Series holds the efficiency edge, achieving a combined 31 MPG (28 City/35 Highway). The 2025 Mercedes-Benz C-Class trails slightly with a combined 29 MPG (25 City/35 Highway).
Is there a significant difference in base price?
There is a noticeable difference in the starting Manufacturer's Suggested Retail Price. The 2025 BMW 3 Series is priced at $45,950, while the 2025 Mercedes-Benz C-Class begins at $48,450, giving the BMW an initial cost advantage.
How does the cargo capacity compare between these two rear-wheel-drive sedans?
The BMW offers substantially more practical hauling capability. The 3 Series provides 16.9 cubic feet of cargo space, whereas the C-Class is noticeably tighter with only 11.6 cubic feet available.
Does the transmission differ between the two models?
Yes, the transmission types differ slightly despite both being automatics. The BMW utilizes an 8-speed shiftable automatic, while the C-Class steps up to a 9-speed shiftable automatic transmission.
Are the exterior dimensions very similar?
They are close, but the Mercedes-Benz is slightly larger overall. The C-Class is 1.1 inches longer and significantly wider at 74.4 inches compared to the BMW's 71.9 inches.
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