Shukriya Sir 
Swift may not be that spacious as compared to Vitz, you must visit the dealership and see in person but 4 people can easily be seated in it. Even 5.
Do NOT get the Navigation. It's NOT worth the amount you spend on it plus if you are a bit in audio and like to listen to good music the Navigation unit has a Pathetic audio output. Get the DLX version, get the fascia kit for the console and get a branded DVD player of either Pioneer, Kenwood or Alpine.
Its the best idea to spend that much on it because you won't find a better deal on a 1300cc than Suzuki Swift 
The suspension is a bit stiff and sports, so not much of a pleasure for the elderly but the Car is Silk Smooth on clear roads and driving it in traffic (which i only do) is a pleasure 
The manual transmission's gear lever has a soft shift. It easily glides throughout
Till now I have driven it around with only me and with 5 people as well and till now it has not touched a bump. With more people you have to be careful but I guess that the same with all the cars now 
11/10 .. Enough said 
Pick is amazing. You can't compare a 1.3 to a 1.8. Swift is Swift and Reborn is Reborn. 
Trust me when you drive it you will forget that it was ever built by Suzuki Pakistan 
I drive at the same range
and i get 11.7+ easily given most of the driving is in traffic walay areas.
9.9/10 One has the 'keera' to ask for something better always
Waiting for its newer model 
One word. Best NEW car in this price range. Go for its eyes closed 