CO₂ emissions: 7 of 7 variants rated.
Smart roadster 74kW Brabus tops the Smart roadster ranking by CO₂ emissions, at 126 g/km.
Across 7 ranked variants, CO₂ emissions spans from 117 g/km to 126 g/km.
| # | Variant | Year | Body | Fuel | CO₂ emissions |
|---|---|---|---|---|---|
| 1 | Smart roadster 74kW Brabus | 2004 | Convertible | Petrol | 126 g/km |
| 2 | Smart roadster-coupé 74kW Brabus | 2004 | Convertible | Petrol | 126 g/km |
| 3 | Smart roadster 60kW Affection | 2004 | Convertible | Petrol | 122 g/km |
| 4 | Smart roadster 45kW | 2003 | Convertible | Petrol | 122 g/km |
| 5 | Smart roadster 60kW | 2003 | Convertible | Petrol | 122 g/km |
| 6 | Smart roadster-coupé 60kW | 2003 | Convertible | Petrol | 122 g/km |
| 7 | Smart roadster 45kW | 2003 | Convertible | Petrol | 117 g/km |