Q. Which variant of Mahindra KUV 100 is better K2 plus petrol or K2 plus diesel?

It depends upon you if you use it more (more than 100 kms per day) go for diesel otherwise go for petrol (if use it 50km daily). My advice go for petrol if you plan to buy for family because less price and maintenance and after 10 years you have to renew your RTO passing if you choose diesel for petrol it is for 15 years...

Diesel is for average but maintainance wise costly. Petrol is less for average but high pickup and low maintainace cost. so Overtaking and riding on highway petrol feels is different. Go for K6 + Nxt variant only.

K2 plus petrol is better because it generates more power and diesel engine are going to be discontinued plus they are less powerful and refined.