What Maintenance Should Be Done Before Buying a Used Car?

What Maintenance Should Be Done Before Buying a Used Car?

Before buying a used car, review its service records and have the vehicle professionally inspected. Important maintenance areas include engine oil, brakes, tires, fluids, battery, cooling system, belts, hoses, filters, suspension, steering, and diagnostic trouble codes.

The exact services a used vehicle needs depend on its age, mileage, condition, manufacturer maintenance schedule, and documented repair history. Do not automatically replace every fluid or part because the car is pre-owned. Instead, use records and a pre-purchase inspection to identify overdue, urgent, or upcoming maintenance.

Freehome Service Center provides automotive diagnostics, routine maintenance, inspections, and repair services for used-car buyers in Cumming, GA, Freehome, Forsyth County, and nearby North Georgia communities.f

Quick Answer: Should I Get a Pre-Purchase Inspection?

Yes. An independent pre-purchase inspection is one of the most valuable steps you can take before purchasing a used car. A qualified technician can identify safety concerns, overdue maintenance, fluid leaks, warning lights, hidden wear, and potential repair expenses that may not be apparent during a short test drive.

A vehicle-history report and seller statements are helpful, but they are not substitutes for a hands-on inspection. Consumer Reports recommends arranging a pre-purchase inspection with a qualified mechanic and requesting a written report of the findings before finalizing a used-vehicle purchase.

Engine Oil and Filter Service

Engine oil lubricates moving engine parts, helps control heat, and carries contaminants toward the oil filter. Ask when the oil was last changed, what type of oil was used, and whether the vehicle manufacturer’s recommended oil specification was followed.

During an inspection, a technician may check:

• Engine-oil level.
• Oil condition.
• Visible oil leaks.
• Oil residue around gaskets and seals.
• Engine noises that may indicate lubrication concerns.
• Service sticker or maintenance records.
• Dashboard warning lights.

Low oil, visible leaks, burnt oil smell, unusual ticking, knocking, or a red oil-pressure warning light should be addressed before purchase. Do not assume an oil change alone will correct an engine-noise or oil-consumption issue.

Brake System Inspection

Brakes are a safety-critical system. A used-car inspection should evaluate brake pad thickness, rotor condition, brake-fluid level and condition, brake lines, hoses, calipers, hardware, and dashboard brake or ABS warnings.

Ask about the age and mileage of the last brake service. During the test drive, watch for:

• Squealing, scraping, or grinding sounds.
• Vibration or pulsation while braking.
• Pulling to one side.
• Soft, spongy, or low brake pedal.
• Brake warning light.
• ABS warning light.
• Excessive stopping distance.

Grinding brakes, fluid leaks, warning lights, severe vibration, or poor braking performance should be investigated before you agree to buy the vehicle.

Tire Condition, Rotation, and Alignment

Tires can reveal how a vehicle has been maintained. Check all four tires and the spare, if equipped. Look for matching tire sizes, tread depth, sidewall condition, date codes, uneven wear, bulges, cracks, punctures, and evidence of prior repairs.

Uneven tire wear may indicate a problem with inflation, wheel alignment, suspension, steering, wheels, or balance. For example: 

During a pre-purchase inspection, ask whether the vehicle needs tire replacement, rotation, balancing, or alignment. Tires can be a significant immediate expense, especially on larger trucks, SUVs, performance vehicles, and all-wheel-drive models.