With petrol and diesel prices continuing to remain a concern for Indian buyers, fuel efficiency has again become one of the biggest purchase factors. For many families, the question is no longer just “which car is cheaper to buy?”, but “which car will cost less to run every month?” Interestingly, the most efficient car is not always the cheapest car. In some segments, CNG dominates. In others, strong hybrids deliver the best balance of efficiency, comfort and range. At the lu