If your current car is running well and there are no mechanical concerns, it makes sense to hold on to it for another two years. However, if you are keen on upgrading, the engine to opt for in the Tata Sierra is the 1.5-litre turbo petrol. But for that, you will have to stretch your budget to over 20 lakhs.
Waiting for a couple of more years might work in your favour, as by then more new products would have entered the market, giving you wider options to choose from.

