Buying a used car in Perth without a pre-purchase inspection is a gamble. The person selling the car knows more about its history than you do — and not all of that information is volunteered. A pre-purchase inspection by a qualified mechanic levels the playing field.
What Is a Pre-Purchase Inspection?
A pre-purchase inspection (PPI) is a comprehensive mechanical assessment of a vehicle performed by a qualified mechanic before you commit to buying it. The mechanic checks every major system and produces a written report detailing the vehicle's current condition, any faults found, and an assessment of likely future maintenance costs.
What Gets Checked
- Engine condition — compression, oil leaks, unusual noises
- Transmission — smooth gear changes, no slipping or jerking
- Brakes — pad thickness, rotor condition, brake fluid
- Suspension and steering — wear in bushings, ball joints, tie rod ends
- Tyres — tread depth, age, uneven wear patterns
- Body and chassis — evidence of accident damage, rust, structural issues
- Electrical systems — all lights, climate control, windows
- OBD-II diagnostic scan — any stored fault codes
- Fluid conditions — oil colour, coolant condition
- Test drive assessment
How Much Does a PPI Cost in Perth?
A pre-purchase inspection in Perth typically costs $150–$250 depending on the thoroughness of the inspection and the mechanic. Some mechanics charge more for European vehicles due to the additional diagnostic complexity. Compare this to the potential cost of buying a car with undisclosed mechanical faults — engine work can cost $3,000–$15,000+.
When Should You Get One?
Always — for any private sale vehicle over $5,000. Even for dealer sales, a PPI is worthwhile on older or higher-kilometre vehicles. A dealer who refuses to allow a pre-purchase inspection should be treated as a red flag.
Who Pays — Buyer or Seller?
The buyer pays for a pre-purchase inspection. It's your due diligence cost. If the inspection finds significant faults, you can use the report to negotiate a price reduction or walk away entirely.
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