Both of these are with uncut wiring and are very less mileage motors.
And one person of my social circle has a Nissan 93 with a QG15de in it. I have built the engine and it's in 10/10 condition. Great combo of power + economy.
QG18de gives u 10 in local.
I am getting 140km with ac in 1000 petrol.
Whereas QG15 goes for 155-160km in local with ac in 1000rs petrol.

