Some sharing regarding some interesting bits I found about the Fofi. TS pls excuse this post as....Oh wait.....
Anyway.
1. The realtime fuel consumption display on the meter cluster, which displays instant FC in L/100km, shows 0.0L/100km when I coast or go downhill with enough speed. This further proves that EFI cars can completely cut off fuel supply when coasting. But the key is that there must be enough speed to minimum maintain engine speed to prevent stalling. Coasting too slow or coasting uphill will not cause the reading to go 0.0. I am still not sure if the Saga does this, but it won't be too a stretched to say it does.
On the other hand, coasting and switching to N or disengaging the clutch will not cut of fuel supply as the engine will stall, hence you save more fuel if you coast in D, and shift to N or disengage the clutch when the car and engine slows down enough that the ECU deems neccesary to resume fuel supply.
Before anyone say the instant FC reading might be unreliable, I have compared my own FC calculation with the long term FC figures as shown by the car (which is derived from the average instant FC), and they matched very closely.
2. Shifting from D to N during a complete stop will not save fuel on a clutch-based tranny. The FC is the same whether in D or N or P, as long as the engine is running and the clutch is disengaged (via clutch pedal, brakes or slotting into N / P). I have observe the same thing on the FLX and the Fofi. Torque converter based tranny, however, may benefit from shifting into N / P, but I may be wrong.
3.
The Fofi has no engine braking in D 
I switched of O/D aka "sports mode" button, suddenly engine braking kicks in and the engine revs sky high. The FLX CVT engine braking is stronger but smoother.
4. I have yet to find a use for the Fofi's L gear. Unlike the FLX L gear, the Fofi will maintain the same gear as you accelerate until 6k RPM, upon which it will shift up and repeat the same thing. As you can imagine, using the L gear often for spirited drive will kill the tranny pretty quickly.
5. Say what you like about the FLX rubbishness, the Campro+CVT is still one of the best combo in any car I've driven. You have no idea how much I wish they have a CVT for the Fofi, it'll be perfect.