1. Unexplained Noises or Vibrations
   Rattles, squeaks, knocks, or vibrations often indicate worn bearings, loose parts, or suspension issues.

2. Reduced Engine Performance
   If the vehicle feels “heavy,” emits more smoke, or struggles on inclines, there may be problems with injectors, pumps, filters, or system blockages.

3. Oil or Hydraulic Leaks
   Puddles under the vehicle or low fluid levels indicate potential wear in seals, hoses, or pumps.

4. Warning Indicators on the Dashboard
   Check engine, hydraulic, oil pressure, temperature — never ignore any warning. Immediate diagnostic inspection is required.

5. Increased Fuel Consumption
   If the vehicle consumes more fuel than usual, there may be issues with the engine, cooling system, or fuel supply.

Conclusion
Timely maintenance reduces costs, prevents major damage, and ensures your vehicle operates at maximum efficiency.