We looked at the latest models and these five cars ranked way high on our list.
- Toyota Prius T3 Hybrid 1.8 VVT with 89g/km CO2 and 72.4mpg combined.
- Volvo S40 Drive with 99g/km CO2 and 74.3mpg combined.
- Ford Focus 1.6 TDCi 115ps (Start-Stop) with 109g/km CO2 and 67.3mpg combined.
- BMW 1 Series 116D with 117g/km CO2 and 62.8mpg combined.
- Volkswagen Passat 1.6 TDi BlueMotion with 114g/km CO2 and 65.7mpg combined.