I found the power per liter of all engines installed in citroens here. I found this in the internet, you can also calculate it yourself 🙂 Petrol 1.0 with 68 ps = 68 ps per liter of space 1.1 with 60 ps = 53 ps 1.4 with 73 ps = 54 ps 1.4 with 88 ps = 65 ps 1.6 with 109 ps = 69 ps 1.6 with 122 ps = 77 ps 1.8 with 125 ps = 71 ps 2.0 with 140 ps = 70 ps 2.0 with 177 ps = 89 ps 3.0 with 207 ps = 70 ps 3.0 with 211 ps = 72 ps Diesel HDI 55 with 54 ps = 39 ps per liter of space HDI 70 with 6 8 hp = 49 ps HDI 110 with 109 hp = 70 ps HDI 135 with 136 hp = 68 ps HDI 170 with 170 hp = 78 ps HDI 205 with 204 hp = 75 ps