Since you are looking for an additional car and mainly for office commutes, a sub-4-meter car along with an automatic transmission would be best. Check out the Maruti Suzuki Brezza, it is compact enough for the city, and the automatic gearbox is a torque converter unit. It is much smoother than an automated manual (AMT), which is what most others at this price offer.
Having a Mahindra XUV 400 means you would be used to a smooth drive and a higher seating position, too, both of which you will find in the Brezza. It also fits within the sub-4-meter dimension and thus would be a tad easier to find parking in the city.

