IMPREZA uses a power-assisted engine speed sensitive rack-and-pinion steering system. The turning circle is 10.4 metres and there are three turns lock to lock. The four-spoke vinyl-wrapped steering wheel contains a 60-litre airbag and the column is tilt-adjustable. The current generation introduced a new power steering pump construction that adapts to varying loads and provides the correct amount of assistance. The system varies hydraulic assistance in response to steering load and engine speed. Demand on engine power reduces when steering assistance is least required.