Cars Q&A

I am planning to purchase a new Vitara Brezza. Considering the value for money it is indeed a great buy. But off late many people keep warning me saying that the engine is 1.3ltr one and it is not sufficient. My family consist of people who are a bit above the weight limit and hence I feel if i got for this 1.3 ltr I might be facing the prob of the engine trying hard to power the car. Is this a possiblity