At present i am using Alto and not comfortable with it due

At present i am using Alto, and not comfortable with it due to its low seating position. I am 5ft 11inch tall and averagely build. I commute nearly 1500km every month, most of it in the city, with occassional long drives.

Now, I am looking for a diesel car which gives me 1)driving comfort (2)reliable service (3)technologically better engine. Keeping the above factors in mind please suggest me a DIESEL car within the price range of 5lakhs to 6lakhs (on road).

Thanking you