You could consider opting for the
Maruti Victoris petrol
VXI AT or
ZXI MT, for its efficient powertrain, as well as its user-friendliness. Being a Maruti, expect similar after-sales support as your current vehicle.
If you want something that gives you the diesel-like punch and you don't mind sacrificing fuel efficiency, then you can consider the
Mahindra XUV 3XO 1.2 Turbo (MPFI). While the XUV is reasonably spacious, its boot is on the smaller side.