For the availability, we would suggest you to please connect with the nearest authorized dealer in your city as it depends on their stock book. Follow the link and select your desired city for dealership details.
In general, 10-12 percent of the overall fuel capacity is the reserved capacity of the vehicle. The TVS Scooty Pep Plus features a 4.2 liters fuel tank and the reserved fuel capacity would be around 0.42- 0.50 liters.
For this, we would suggest you get in touch with the nearest authorized service center of TVS in your city as they would be able to assist you better in this.