Both cars are similar in size. Honda Insight is 1 cm shorter than the Honda Civic, 2 cm wider the height of the cars does not differ significantly.
Trunk capacity:
428 litres
408 litres
Even though the car is shorter, The Honda Civic may have more interior space, so the cabin could be more spacious and more comfortable for the driver and passengers.
Turning diameter:
10.9 meters
11.5 meters
The turning circle of the Honda Insight is 0.6 metres less than that of the Honda Civic, which means Honda Insight can be easier to manoeuvre in tight streets and parking spaces.