A car with power steering has broken down with engine damage and must be towed away. What is correct?

When a car with power steering is towed and the engine is not running, the power assistance for the steering no longer works. This means steering requires much more physical effort and feels considerably heavier. That is why the correct answer is that it is considerably heavier. The steering is not locked, but it is much harder to turn the wheel. It is also incorrect to say the steering is not impaired; it actually is, because of the loss of power assistance. In summary, whenever a vehicle with power steering is towed with the engine off, expect the steering to be much heavier, which can make towing more difficult. Always be prepared for this change in steering behavior.