Pre-purchase walkaround
1997 Porsche Boxster (986)
41,000 miles · asking $3,000
Five-year cost to own, maintenance and fuel
~$25,900
The 986 is the entry-level mid-engine Porsche that launched the Boxster line, cheap to buy now but with a well-known engine lottery. Most of your money goes into the M96 engine's known weak points and the softtop/electrical bits, not routine wear.
The roadmap
41k → 101k mi · 12k a yearYear 1Tires and the ordinary rhythm.~$5,870
Year 2Brakes and consumables.~$4,845
Yrs 3-5The quiet year. · The ordinary rhythm: scheduled work and fuel.~$15,144
Five years, all in~$25,900
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 41,000 miles.
IMS bearing failure$350-$1,250 if not done
0typical window 30k-120k · this car: 41k, inside the window150k mi
The M96 intermediate shaft bearing can fail and destroy the engine. Early 986 cars use a dual-row bearing that is generally more robust than later single-row, but failure is still the defining risk. Metal debris in oil, sudden catastrophic engine failure, or a rumble at idle.
Rear main seal leak$1,100-$2,180 if not done
0typical window 40k-120k · this car: 41k, inside the window150k mi
The RMS on M96 engines is a chronic seep point and often addressed at the same time as clutch or IMS work. Oil weeping from the bellhousing area, drips under the car.
windows from 23 owner complaints on file with NHTSA and community service data · · profile researched with cited sources, review pending
6 recalls + 182 service bulletins →
Recalls (verify completion by VIN)
POWER TRAIN:AUTOMATIC TRANSMISSION · 03V004000
ELECTRICAL SYSTEM:IGNITION:SWITCH · 98V113000
POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION (PRNDL) · 98V112000
AIR BAGS:ON-OFF SWITCH ASSEMBLY · 98E005000
EXTERIOR LIGHTING · 09E012000
Service bulletins by area
EQUIPMENT (66) · ENGINE AND ENGINE COOLING (49) · ELECTRICAL SYSTEM (33) · STRUCTURE (7)
Hand this to your inspector
A $300 inspection against this list is the best money in the whole deal.
01Pull the oil filter and cut it open, or inspect the drained oil for metal flakes indicating IMS or bore wear.
02Cold-start the car and listen for ticking, rumble at idle, and check for startup smoke.
03Inspect the bellhousing seam and rear of the engine for oil from the RMS.
04Cycle the convertible top fully several times and check for jams or slow operation.
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.
$29
saved to your garage
Just keeping tabs? , no account needed.
typical parts + government labor rates · an estimate, not a quotecheck another car →