What to Look for When Buying a Used Car: A Mobile Mechanic's Car Purchase Checklist
- plesslperformance
- Aug 21
- 3 min read
Purchasing a car—whether it’s your first or your fifth—is a big investment. While a shiny exterior and clean interior might catch your eye, what’s under the hood (and underneath the car) really matters. At Plessl Performance Mobile Mechanic, we know that spotting issues early can save you thousands in repairs and give you peace of mind before handing over your hard-earned cash.
Here’s a buyer’s checklist from your local mobile mechanic you can use when shopping for a used car. Print it out or save it to your phone so you’re ready for your next test drive.
✅ Car Mechanical Checklist- Mobile Mechanic Car Purchase Checklist
Engine & Transmission
Look for oil leaks under the car or around the engine.
Check the oil dipstick: oil should be clean and amber, not sludgy or burnt-smelling.
Transmission fluid (if automatic) should be pink/red, not dark or burnt.
Ask if the timing belt/chain has been replaced (especially for vehicles with 90K–120K miles).
Listen for knocking, ticking, or rough idling when the engine runs.
Brakes & Suspension
Test the brakes for smooth stopping—no grinding, squeaking, or vibration.
Check brake pads and rotors for wear.
Push down on each corner of the car—if it bounces more than once, shocks/struts may be worn.
Listen for clunks or rattles over bumps (could signal suspension issues).
Exhaust System
Look for excessive rust on the exhaust pipes or muffler.
Watch for blue, black, or white smoke from the tailpipe (can indicate oil burning, rich fuel mix, or coolant leak).
Steering & Tires
Make sure the steering wheel turns smoothly without pulling left or right.
Inspect tires for uneven wear (could point to bad alignment or suspension issues).
Check tire tread depth—insert a penny; if you can see the top of Lincoln’s head, it’s time for new tires.
Cooling & Electrical
Inspect radiator and coolant hoses for cracks or leaks.
Look for corrosion around the battery terminals.
Test headlights, turn signals, brake lights, power windows, A/C, and heater.
✅ Auto Body & Exterior Checklist
Frame & Structure
Look under the car for rust, especially around frame rails and wheel wells.
Check for weld marks, uneven seams, or overspray—signs of accident repairs.
Make sure the doors, hood, and trunk open and close smoothly.
Paint & Panels
Walk around the car in good light—look for mismatched paint or ripples in body panels.
Check for bubbling paint (rust hiding underneath).
Glass & Trim
Inspect windshield and windows for cracks or large chips.
Look at rubber seals around doors and windows—cracked seals can lead to leaks.
Interior Condition
Smell for mildew (possible water damage).
Test seat adjustments, seatbelts, and dashboard electronics.
✅ Questions to Ask the Car Seller
Do you have service and maintenance records?
Has the car ever been in an accident?
When were the brakes and tires last replaced?
Has the transmission, clutch (if manual), or engine had any major repairs?
Are there any warning lights currently on the dashboard?
Final Tip: Get a Car Pre-Purchase Inspection
Even if the car looks and drives fine, hidden issues can be costly. At Plessl Performance Mobile Mechanic, we offer mobile car pre-purchase inspections—we come to the seller’s location, perform a full diagnostic and mechanical check, and give you a professional assessment before you buy.
This small step can prevent big regrets down the road. Call us today for an appointment. 484-853-0113.
Comments