Cultus HP/rpm=55/5800
Alto HP/rpm=55/5500
Santro HP/rpm=55/5700
Cuore HP/rpm=41/5500
Joy HP/rpm=63/5400
Cultus Torque (kg-m/rpm)=8.5/3000
Alto Torque (kg-m/rpm)=8.5/2500
Santro Torque (kg-m/rpm)=8.3/3250
Cuore Torque (kg-m/rpm)=7.5/3200
Joy Torque (kg-m/rpm)=10.12/4200
Cuore is like Mehran. But Cuore has independent rear suspension for smooth ride and to save you from jumps on a bumpy road.
Mehran HP/rpm=40/5500
Torque (kg-m/rpm)=6.8/3000
Santro has normal gear ratios, good top speed, efi engine, 14KM/Litre with or without AC, small rear seats are higher than front seats, Santro CLUB has no tinted glasses (even Cuore has)
Joy is like Santro expect for Joy has EURO 2 engine, more space in rear with seat belts
Overall JOY is the best
@kasmaq
In my view rating for body strength in terms of wear n tear and not passenger's safety (i dont believe passenger safety is an issue for local assemblers) is...
Joy (Front and Rear Crumple Zones)
Santro
Alto
Cuore
Cultus (but has no side impact beams)
In my view rating for Fuel Efficiency is...
Joy (14 km/L) but EURO 2 engine
Santro (14 km/L)
Alto (12 km/L) good with AC on CNG
Cuore (12 km/L) good with AC on CNG
Cultus (12 km/L) good with AC on Petrol
Resale rating...
Cultus/Alto
Santro
Cuore
Joy
JOY isnt in your options list but i think its the best if you want to keep it for 5 years or more...