Pre-purchase walkaround
2020 Porsche 911 (992)
9,000 miles · asking $75,000
Five-year cost to own, maintenance and fuel
~$20,100
The 992-generation 911 is Porsche's current turbocharged flat-six sports car, sharing much of its platform across Carrera, Turbo, and GT variants. It is a relatively young and reliable platform, but ownership money goes to consumables (tires, brakes), PDK service, and the usual expensive-when-out-of-warranty electronics and coating repairs.
The roadmap
9k → 69k mi · 12k a yearYear 1The ordinary rhythm: scheduled work and fuel.~$3,324
Year 2The quiet year.~$3,565
Yrs 3-5The ordinary rhythm: scheduled work and fuel. · Tires and the ordinary rhythm.~$13,232
Five years, all in~$20,100
typical parts + government labor rates (national labor rates) · an estimate, not a quote
What to look for on this one
Every used example of this chassis has the same questions. The bands show when each tends to surface; the gold line is this car at 9,000 miles.
PDK transmission fluid and mechatronics service$2,310-$6,990 if not done
0typical window 40k-100k · this car: 9k, ahead of it150k mi
The 8-speed PDK requires scheduled fluid service, and neglected units can develop clutch and mechatronic wear. Harsh or hesitant shifts, or overdue service history.
Direct injection carbon buildup$350-$1,250 if not done
0typical window 60k-120k · this car: 9k, ahead of it150k mi
Direct-injected engines can accumulate intake valve carbon since fuel does not wash the valves; mostly a higher-mileage concern. Rough cold idle or slight misfire at higher mileage.
High consumable wear (tires, brakes, PCCB)priced only if found
Condition-driven, not mileage-driven, so it is not in the totals and inspection is the only answer. Worn staggered tires, low brake pads, or discs near replacement.
windows from 5 owner complaints on file with NHTSA and community service data · · profile researched with cited sources, review pending
2 recalls + 697 service bulletins →
Recalls (verify completion by VIN)
VISIBILITY:WINDSHIELD · 24V155000
BACK OVER PREVENTION: SENSING SYSTEM: CAMERA · 25V896000
Service bulletins by area
ELECTRICAL SYSTEM (198) · EQUIPMENT (157) · UNKNOWN OR OTHER (94) · ENGINE (72)
Hand this to your inspector
A $300 inspection against this list is the best money in the whole deal.
01Confirm PDK service history and check for harsh or delayed shifts on a test drive
02Cycle the front axle lift (if equipped) fully up and down, listening for slow operation or faults
03Run a full PIWIS or dealer scan for stored fault codes and pending software campaigns
04Inspect tires for staggered wear, matched brands, and DOT date codes on all four corners
Walking into a negotiation?
This roadmap as a PDF, priced for your zip code, with the inspection checklist, a fair price for this example, and the negotiation sheet. Saved to your garage the moment you pay.
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typical parts + government labor rates · an estimate, not a quotecheck another car →