CO₂ emissions: 43 of 47 variants rated.
Daihatsu Sirion 2 1.3 16V DVVT Comfort 4x4 tops the Daihatsu Sirion ranking by CO₂ emissions, at 159 g/km.
Across 43 ranked variants, CO₂ emissions spans from 118 g/km to 159 g/km.