In your budget, it's best to go for the BMW X3, although you might have to stretch by Rs 2-3 lakh. It is the newest SUV, offering a strong 2.0-litre diesel engine, plus the latest tech and a spacious and comfortable cabin. The Discovery Sport is a capable car, but it is quite old now and its age shows; if you need a third row of seats, however, do consider it. The X1, in comparison, is a segment below and offers less powerful engines and, of course, less space. The new Audi Q5 launch is some time away, and while it is capable, note that it will only come in petrol guise, not diesel. You could also consider the Mercedes-Benz GLC, whose 2.0-litre diesel is also strong, and it offers a spacious and luxurious cabin as well.