Horrible fuel efficiency

Here's my review of Grand i10's Pros: Great in looks and inside comfort. Decent pickup and driveability. Hyundai is known for its styling and this model doesn't disappoint. Compared to its counterpart the i10, the Grand i10 Asta model has more curves. The interiors are two tone and better than its rivals. Seats are comfortable too. The car comes with unmatched features of push-button start, front and rear AC vents, ORVM, two charging ports at front and back and decent boot space. The glove box has a small window which can be opened up to share air conditioning to cool your drinks. It's a total value for money car in its segment but only if they would have delivered the proper fuel efficiency. Cons: The company promises a mileage of 12-14kmpl in the city. But the AT version only delivers 7-8kmpl. The representatives of Hyundai are also not too cooperative to solve this and work with some high handiness attitude as we experienced. So your filled fuel tank disappears by the time you reach 300kms with a full tank. Hyundai has been sued in the US for giving false fuel efficiency and not delivering the desired, thereby polluting the environment.