Check the oil; it should be translucent brown, not black or milky white. Look at the coolant and brake fluid levels as well.
The cabin's condition often reflects how the car was treated overall. What to Look for When Buying a Car: A Complete Guide
Uneven tread wear can indicate suspension or alignment issues. Use the "penny test"—if you can see the top of Lincoln's head, the tires likely need replacing. 2. Under the Hood A well-maintained engine is the heart of a reliable car.
Scan for fresh oil stains on the engine block or puddles on the ground. Belts & Hoses: Inspect for cracks, fraying, or brittleness. 3. Interior & Electronics
Check wheel wells, door bottoms, and the undercarriage for any signs of corrosion.