List of May 2008 UK fuel economy ratings (N–S) List of May 2008 UK fuel economy ratings (N–S) List of May 2008 UK fuel economy ratings (N–S)

| Manufacturer | Model | Transmission | Engine_Capacity | Fuel_Type | L_100km_Urban_Cold | L_100km_Extra_Urban | L_100km_Combined | mpg_UK_Urban_Cold | mpg_UK_Extra_Urban | mpg_UK_Combined | mpg_US_Urban | mpg_US_Extra_Urban | mpg_US_Combined | CO_2_g_km | Green_Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Smart | fortwo cabrio | SM6 | 698 | Petrol | 6.0 | 4.0 | 4.7 | 47.1 | 70.6 | 60.1 | 39.2 | 58.8 | 50.0 | 113 | B |
| Smart | fortwo cabrio | A6 | 698 | Petrol | 6.1 | 4.1 | 4.8 | 46.3 | 68.9 | 58.8 | 38.6 | 57.4 | 49.0 | 116 | B |
| Smart | fortwo cabrio | SM6 | 698 | Petrol | 6.1 | 4.2 | 4.9 | 46.3 | 67.3 | 57.6 | 38.6 | 56.0 | 48.0 | 118 | B |
| Smart | fortwo cabrio | A6 | 698 | Petrol | 6.3 | 4.4 | 5.1 | 44.8 | 64.2 | 55.4 | 37.3 | 53.5 | 46.1 | 121 | C |
| Smart | fortwo cabrio | SM6 | 698 | Petrol | 6.1 | 4.3 | 5.0 | 46.3 | 65.7 | 56.5 | 38.6 | 54.7 | 47.0 | 120 | B |
| Smart | fortwo cabrio | A6 | 698 | Petrol | 6.5 | 4.6 | 5.3 | 43.5 | 61.4 | 53.3 | 36.2 | 51.1 | 44.4 | 127 | C |