To be honest as common middle class man I will prefer petrol over deasil. let me give you example I have alto k10 which is on petrol and gives me mileage at least 19km per litre. that means it save my money from refilling fuel.it doesn’t mean I don’t refill my fuel tank but it gives me time and liability to do so . Now comes my second car that is Scorpio, No doubt deasil is cheaper then petrol but I have to refill my tank almost every two days and it just gives me mileage of 10 km per litre, both petrol and deasil car have expectation there but they are is very less in numbers . petrol car parts are much cheaper then deasil car and very important thing petrol car are much prefer for reselling . deasil cars are highly maintained stuff and people dose not like to buy second hand deasil car .overall buying car is depression and we all know it so keep in mind at time of buying a car in what u are investing . my tips for you guys are people who need speed, acceleration, mileage, less maintained, low price car go with petrol now comes the people who need heavy engine, speed, high maintained, a good amount of money to invest in car please go with deasil.good luck