* The specific car model and year: Different cars have different engine sizes, transmissions, and aerodynamic designs.
* Driving conditions: City driving consumes significantly more fuel than highway driving due to stop-and-go traffic. Speed, terrain (hills, mountains), and even weather (headwinds) all impact fuel economy.
* Driving style: Aggressive acceleration and braking significantly reduce fuel efficiency.
* Vehicle maintenance: Properly maintained vehicles (tires inflated correctly, regular tune-ups) generally get better gas mileage.
A small, fuel-efficient car might achieve 20 kilometers per liter (km/L) or even more under ideal conditions. However, a less efficient small car might only manage 10 km/L or less, especially in city driving. To find the fuel economy for a specific car, you should consult its owner's manual or check online resources like the manufacturer's website or fuel economy databases specific to your region (like fueleconomy.gov in the US).