BS4 Engine but value for money

It's extremely well designed car for space and utility. Even though it's a sub 4 metre car it actually looks longer. Leg room for average Indian height is really good along with headroom. However, the engine is BS4 which means Renault has to introduce a refined one by April 2020 to continue selling the vehicle. That puts the buyer in dilemma whether buy now or later. The vehicle has decently powered 1000 cc engine but they could have introduced 1200 cc instead.