Motor mechanics maintain, test and repair petrol engines and mechanical parts of motor vehicles, including the steering and brakes, and transmission and suspension systems. They diagnose faults in engines, fix, maintain, reassemble, restore and overhaul vehicle components and also talk to the vehicles' owner about issues they may be having with their vehicle. Common tasks might include the testing and repairing of electrical lighting systems, the replacement of damaged parts in the engine, or the inspection of vehicles in order to render them safe for the road. Motor mechanics work throughout the state, in service stations, vehicle dealerships, for public authorities such as local governments or defence, transport firms, organisations with fleets of vehicles that need to be maintained and for themselves in their own businesses.