★★★★★
"Mark found issues on a Cayenne I was about to buy that the seller insisted didn't exist. PIWIS doesn't lie. Saved me enormously."
Porsche PPI Adelaide · PIWIS Diagnostics · Written Report · From $650 + GST
The most important money you will spend before buying a Porsche. A $650 PPI has saved Rennen customers tens of thousands of dollars on Porsches that looked right but weren't. PIWIS diagnostics, full mechanical inspection, written report.
All Porsche models · Remote / interstate buyers welcome · Results same day
What's Included
PIWIS Full Diagnostic Scan
All modules, all fault codes, stored history, previous calibrations
Full Mechanical Inspection
Engine, cooling, brakes, suspension, tyres, drivetrain, bodywork, fluids
Road Test
Dynamic assessment of transmission, engine, suspension, brakes and steering
Written Report
Detailed findings, photos, model-specific issue notes, estimated repair costs
From $650 + GST · All Porsche models · Results same day where possible
Why a PPI Matters
A Rennen customer bought a 997 Carrera S from a private seller in 2023. PIWIS revealed stored airbag codes consistent with a previous accident, a PDK in early decline and the first signs of bore scoring. The seller had cleared the codes. The customer renegotiated $32,000 off the price — then brought the car to Rennen for the repairs. The PPI paid for itself four hundred times over.
IMS bearing condition assessment, bore scoring check, RMS leak, coolant pipe condition (997.1), PIWIS scan for all stored codes. These are the three issues that make or break a 996/997 purchase.
911 Service Page →Coolant pipe condition (critical on 2014–2018 turbos), PDK service history, transfer case behaviour, PIWIS scan. The coolant pipe failure on early Macans is the defining mechanical issue for buyers.
Macan Service Page →Air suspension condition, transfer case, bore scoring on V8 models, timing chain on diesel. For classic Porsche: oil leaks, valve seal condition, heat exchanger (911SC/930), fuel system, chain tensioner.
Classic Porsche Page →"Mark found issues on a Cayenne I was about to buy that the seller insisted didn't exist. PIWIS doesn't lie. Saved me enormously."
"I'm in Melbourne and was buying a 911 from a private Adelaide seller. Rennen did the PPI, sent me a detailed report within hours. Bought with confidence."
"The written report was meticulous. Every system covered, estimated repair costs included. I knew exactly what I was buying."
Rennen Owner Circle members get service reminders, event invitations, early access to cars for sale and Retromotive opportunities. Once your PPI is done and you've bought your Porsche — this is the next step.
A full Rennen PPI including PIWIS scan, mechanical inspection and road test takes approximately 2–3 hours. The written report is typically delivered the same day or the following morning. Call 0412 888 441 to confirm timing when booking.
Yes. Many Rennen PPI customers are interstate or overseas buyers purchasing a Porsche from Adelaide. Rennen will coordinate with the seller, complete the inspection and send you a full written report. Call 0412 888 441 to arrange.
The written report will detail every finding including estimated repair costs. You can then negotiate with the seller, request repairs before purchase, walk away or proceed with full knowledge of what the car needs. This is exactly what the PPI is for.
Yes. Rennen has 30+ years experience with classic Porsche and performs pre-purchase inspections on all air-cooled models including 911, 912, 914, 930, 964 and 993.
PIWIS diagnostics, full mechanical inspection, written report. From $650 + GST. Call 0412 888 441.