[snaronikar]

All 3 vehicles are in different segments itself. Comboining 3 will make no sense.

1) Fabia-Diesel: Price is little high; Space/comfort-Good. Interior-OK; Exterior-OK; A**-Not so good; Safety-Good (ABS+Airbags); FE-OK.
2) Verna -D: Price is little high; Space/comfort-OK; Interior-OK; Exterior-good; A** better than Skoda; Safety-Not as Fabia; FE-OK.
3) Swift-D: Over prized. Space/comfort: Satisfactory; Interior-Satisfactory; Exterior-OK. A**-Good; Safety: Satisfactory.

If you are considering above, pls consider the below also:
Palio 1.3 MJD/Getz CRDi/ Fiesta Diesel. You will have a variety of choices.

But let us understand what you want? Safety / Comfort/ FE/ Performance/ Usage of car etc. apart from above what is your budget?