2026 Mazda 3 4-Door 2WD vs 2027 Mercedes-Benz C300
| EPA figure | 2026 Mazda 3 4-Door 2WD | 2027 Mercedes-Benz C300 |
|---|---|---|
| Model year | 2026 | 2027 |
| Body · drive | Compact · Front-Wheel Drive · Gas | Compact · Rear-Wheel Drive · Hybrid |
| Combined MPG | 30 | 29 |
| City / highway MPG | 27 / 36 | 25 / 35 |
| Fuel a year | $2,250 | $2,850 |
| Tailpipe CO₂ (g/mi) | 294 | 307 |
| Engine | 2.5 L 4-cyl | 2.0 L 4-cyl turbo |
| Transmission | Automatic (S6) | Automatic 9-spd |
▲ marks the better official figure on that line: more range, MPG or MPGe; less fuel cost or CO₂. From fueleconomy.gov.