CO₂ emissions: 8 of 21 variants rated.
Mazda 121 1.3i GLX tops the Mazda 121 ranking by CO₂ emissions, at 162 g/km.
Across 8 ranked variants, CO₂ emissions spans from 155 g/km to 162 g/km.
| # | Variant | Year | Body | Fuel | CO₂ emissions |
|---|---|---|---|---|---|
| 1 | Mazda 121 1.3i GLX+1 | 2000 | Hatchback | Petrol | 162 g/km |
| 2 | Mazda 121 1.3i LX | 1998 | Hatchback | Petrol | 162 g/km |
| 3 | Mazda 121 1.3i LX | 1996 | Hatchback | Petrol | 162 g/km |
| 4 | Mazda 121 1.3i GLX+1 | 1996 | Hatchback | Petrol | 162 g/km |
| 5 | Mazda 121 1.25i GLX+1 | 2000 | Hatchback | Petrol | 155 g/km |
| 6 | Mazda 121 1.25i LX+1 | 1998 | Hatchback | Petrol | 155 g/km |
| 7 | Mazda 121 1.25i GLX+1 | 1996 | Hatchback | Petrol | 155 g/km |
| 8 | Mazda 121 1.25i GLX Cabrio Top | 1996 | Hatchback | Petrol | 155 g/km |