2003 BMW M3 Convertible vs 2003 BMW Z4 Roadster
| EPA figure | 2003 BMW M3 Convertible | 2003 BMW Z4 Roadster |
|---|---|---|
| Model year | 2003 | 2003 |
| Body · drive | Minicompact · Rear-Wheel Drive · Gas | Two Seaters · Rear-Wheel Drive · Gas |
| Combined MPG | 16 | 21 |
| City / highway MPG | 14 / 20 | 18 / 26 |
| Fuel a year | $5,150 | $3,900 |
| Tailpipe CO₂ (g/mi) | 555 | 423 |
| Engine | 3.2 L 6-cyl | 2.5 L 6-cyl |
| Transmission | Automatic (S6) | Automatic (S5) |
▲ marks the better official figure on that line: more range, MPG or MPGe; less fuel cost or CO₂. From fueleconomy.gov.