Here are the Compression Ratio and variants of Proton Persona:
Variants | 2019 Proton Persona 1.6 Executive CVT | 2019 Proton Persona 1.6 Standard CVT | 2019 Proton Persona 1.6 Premium CVT | 2019 Proton Persona 1.6 Standard MT |
Compression Ratio | 10:1 | 10:1 | 10:1 | 10:1 |