British buyers of Citroën vehicles are no strangers to special edition models, which usually come with improved features and unique colors and trims. The same holds true for the new C3 Picasso Code that replaces the previous Blackcherry special edition.

The Picasso Code is based on the best-selling model of the range, the diesel-powered HDi 90 manual VTR+ version that returns 61.4mpg UK (51.1mpg US or 4.6 lt/100km) on the combined cycle.

It has one of the longest designations we've ever seen but what really makes the C3 e-HDi 70 Airdream EGS VTR+ stand out from the crowd is that it's greenest and most fuel efficient conventionally-powered Citroën model to date.

According to the French automaker, the diesel-powered supermini returns a combined fuel economy of 83.1mpg UK (equal to 69.2mpg US and 3.4lt/100km) with CO2 emissions of just 87g/km.