During the under-vehicle inspection, the three items you should inspect are:
1. Brake Pads: Check the condition of the brake pads to ensure they have sufficient thickness and are not worn out, which is crucial for safe braking.
2. Steering and Suspension: Inspect the steering components and suspension system for any signs of damage, wear, or leaks that could affect the vehicle's handling and stability.
3. Exhaust System: Examine the exhaust system for leaks, damage, or rust that could impact the vehicle's emissions, performance, and overall safety.
These three components are essential to check during an under-vehicle inspection to ensure the vehicle's safety, performance, and overall functionality. Remember to address any issues found during the inspection promptly to maintain the vehicle in good working condition.