How can you save fuel if you drive a car with an automatic gearbox?

You answered correctly. To save fuel in an automatic car, it is important to accelerate gently without pressing hard on the accelerator, because strong acceleration uses more fuel. Using the eco mode is also correct, as this setting adjusts the engine and shifting patterns to be more fuel-efficient. Switching off the engine while driving down a hill is dangerous and not allowed, as it affects your control and braking ability. In summary, gentle acceleration and using eco mode are both effective and safe ways to reduce fuel consumption with an automatic transmission.