TVS Motor — TVS SPORT bike 45 km/lt

Address:

Chennai, Tamil Nadu, 600094

I have purchased 2/6/2016 from maruthi motors First month bike was giving mileage 48 km/ lit to 50km/lit. After one servicing my bike is giving 45km/lit.
When I went for first servicing MARUTHI MOTORS I complained about mileage, but they are telling that TVS SPORTS will give only 50km/lit. mileage.But the thing is my bike is giving 45km/lit.