The all-new Honda City e:HEV’s complex yet incredibly clever hybrid technology makes it the most fuel efficient internal combustion engine (ICE) vehicle we have ever tested. How efficient? The real-world numbers are 19.8kpl in the urban environment and 22.5kpl on the highway. For any car, that real-world figure would be good, and from a midsize sedan, it’s even more impressive. So to find out what makes it so efficient and what it’s like to drive, we put it to the full Autocar India Instrumented Road Test.