What is the mileage of a 22 seater Traveller? The mileage of a 22 seater Tempo Traveller depends on the road conditions, driving style and where the vehicle is running on highways or city roads. These travellers offer a mileage of 8 to 12 km per liter of diesel. On highways where the roads are smooth and the speed is consistent and remains the same, the mileage is around 10 to 12 km per liter whereas in city traffic, the mileage may drop to 8 to 10 km per liter due to frequent stops and slow moving vehicles. Several factors affect the fuel efficiency of a Tempo Traveller are Engine condition: Regular maintenance improves mileage. ......See More