Final answer:
The subject of this question is Automotive Technology, specifically related to vehicle problems such as leaking hydraulic hoses and faulty brakes.
Step-by-step explanation:
The subject of this question is Automotive Technology. The issues mentioned, such as leaking hydraulic hoses, faulty brakes, steering problems, and a parking brake that will not engage, are all related to common problems in a vehicle. These problems can occur in any type of vehicle and are often addressed by automotive technicians.