When it comes to fuel-efficient cars in India, Maruti Suzuki is usually the first name that comes to mind. Among petrol vehicles, the Grand Vitara Strong Hybrid is currently considered as the most fuel-efficient car with up to 27.97 kmpl mileage.
However, a luxury sedan has now taken the mileage crown. The new 2026 Mercedes-Benz S-Class, launched by Mercedes-Benz India, claims a fuel efficiency of up to 32.2 kmpl, surpassing even some of India's most economical mass-market vehicles.