Vitz & Passo both have 2 models each in 2014
Vitz Pre-Facelift
Vitz Spider Shape
Passo Pre-Facelift
Passo Facelift (Eco Idle Tech.)
For Best Fuel Economy the last option will be the pick.
I use Vitz 2015
u shud expect 14.5 with A/C normal foot
18 on ring road
Wassalaam