Buying blind is how you overpay. Don’t decide alone.
Send this to whoever’s advising you: your mechanic, the PPI shop, the friend who’s owned three of these.
The 991.1 is the first electric-steering 911, a fast and comfortable everyday sports car with strong parts availability. Money goes to the usual Porsche wear items (tires, brakes, clutch/PDK service) plus a few known engine and electronics gremlins that are expensive if they hit.
AI-drafted profile
This failure-mode list was drafted by AI and cross-checked against this car’s real NHTSA complaint data. It has not yet been verified against real invoices, and it deliberately shows no cost figures: we never publish a dollar amount we can’t source. Own one? Your cost submissions below are what turn this into a verified teardown.
The financial roadmap
from 10,000 mi · 12k mi/yr
What should happen, when, and what it should cost. Paste the car's service records when running a report and this adjusts for what's already done.
Factory warranties expired; every repair below is on you · terms approximated from model year; verify in-service date
Year 110k → 22k mi+1 unpriced~$3,219›
Fuel (EPA + DOE)$2,645published federal figures
Brake fluid flush$140-$230baseline schedule (typical parts + BLS labor)
Oil and filter service$85-$180baseline schedule (typical parts + BLS labor)
Oil and filter service$85-$180baseline schedule (typical parts + BLS labor)
Wipers, bulbs, small consumables$70-$175baseline schedule (typical parts + BLS labor)
Electric steering rack/column faultscost pendingAI-drafted, cost pending verification
Year 222k → 34k mi~$3,041›
Fuel (EPA + DOE)$2,645published federal figures
Oil and filter service$85-$180baseline schedule (typical parts + BLS labor)
Oil and filter service$85-$180baseline schedule (typical parts + BLS labor)
Engine air + cabin filters$75-$185baseline schedule (typical parts + BLS labor)
Year 334k → 46k mi+2 unpriced~$4,160›
Fuel (EPA + DOE)$2,645published federal figures
Tires (set of four)$550-$1,325baseline schedule (typical parts + BLS labor)
Four-wheel alignment$150-$225baseline schedule (typical parts + BLS labor)
Oil and filter service$85-$180baseline schedule (typical parts + BLS labor)
Oil and filter service$85-$180baseline schedule (typical parts + BLS labor)
Wipers, bulbs, small consumables$70-$175baseline schedule (typical parts + BLS labor)
PDK mechatronic and clutch wearcost pendingAI-drafted, cost pending verification
Front AC condenser failurecost pendingAI-drafted, cost pending verification
Year 446k → 58k mi+1 unpriced~$4,084›
Fuel (EPA + DOE)$2,645published federal figures
Front brake pads and rotors$375-$775baseline schedule (typical parts + BLS labor)
12V battery$165-$400baseline schedule (typical parts + BLS labor)
Brake fluid flush$140-$230baseline schedule (typical parts + BLS labor)
Oil and filter service$85-$180baseline schedule (typical parts + BLS labor)
Oil and filter service$85-$180baseline schedule (typical parts + BLS labor)
Engine air + cabin filters$75-$185baseline schedule (typical parts + BLS labor)
Water pump and coolant leakscost pendingAI-drafted, cost pending verification
Year 558k → 70k mi~$4,232›
Fuel (EPA + DOE)$2,645published federal figures
Rear brake pads and rotors$365-$755baseline schedule (typical parts + BLS labor)
Transmission fluid service$230-$550baseline schedule (typical parts + BLS labor)
Coolant service$180-$315baseline schedule (typical parts + BLS labor)
Oil and filter service$85-$180baseline schedule (typical parts + BLS labor)
Oil and filter service$85-$180baseline schedule (typical parts + BLS labor)
Wipers, bulbs, small consumables$70-$175baseline schedule (typical parts + BLS labor)
5-year total: ~$18,700full range $16,730-$20,725
Probability-weighted estimate, not a quote and not a substitute for a PPI. Baseline schedule items are priced from typical parts ranges and BLS labor data for a mainstream car; known failure modes carry their own provenance. Confidence: typical.
The ownership timeline
this car: 10,000 mi
When things typically happen, in miles. Click a row for the detail.
Bands are typical windows, not predictions. Steel rows are federal complaint clusters (25th-75th percentile of owner-reported failure mileage, median marked). Condition-driven items don’t appear here: inspect for those regardless.
What this car is known for
tap a row for the detail
PCM infotainment glitchesLikely due nowcost pending›
What you’ll notice: Screen freezes, nav failures, Bluetooth dropouts.
Early 991 PCM systems are dated and can be laggy or fail, and updates are limited.
Condition-driven: inspect, don't assume
AI-drafted, unverified · cross-checked against NHTSA complaints · submit what you paid below to verify it
Electric steering rack/column faultsComing upcost pending›
What you’ll notice: Steering warning light, heavy or inconsistent assist.
The 991.1 introduced electromechanical steering and some early units logged faults or needed software/module attention.
Typical window: 20k-80k miles
AI-drafted, unverified · cross-checked against NHTSA complaints · submit what you paid below to verify it
Cylinder bore scoringdeal-shaperInspect for itcost pending›
What you’ll notice: Ticking or knocking noise, oil consumption, smoke on cold start.
Direct-injection 9A1 engines, particularly the 3.8L in aggressive use, can develop bore scoring on cylinders 4-6. Less common than the older M96/M97 but documented.
Condition-driven: inspect, don't assume · applies only if found
AI-drafted, unverified · cross-checked against NHTSA complaints · submit what you paid below to verify it
PDK mechatronic and clutch wearDown the roadcost pending›
What you’ll notice: Harsh shifts, hesitation, or fault codes on the dual-clutch box.
PDK is reliable but the mechatronic unit and clutch packs are costly, and skipped fluid services accelerate wear.
Typical window: 40k-100k miles
AI-drafted, unverified · cross-checked against NHTSA complaints · submit what you paid below to verify it
Water pump and coolant leaksDown the roadcost pending›
What you’ll notice: Low coolant, sweet smell, drips under car, overheating.
Plastic-impeller water pumps and coolant connections weep with age and heat cycling on the flat-six.
Typical window: 50k-90k miles
AI-drafted, unverified · cross-checked against NHTSA complaints · submit what you paid below to verify it
Front AC condenser failureDown the roadcost pending›
What you’ll notice: AC blows warm, poor cooling in traffic.
Low-mounted front condensers collect road debris and corrode or get punctured, a common Porsche/Audi trait.
Typical window: 40k-90k miles
AI-drafted, unverified · cross-checked against NHTSA complaints · submit what you paid below to verify it
PPI checklist
AI-drafted for this chassis. Hand it to your inspector.
- 01Cold-start the engine and listen for ticking or knocking from the rear before it warms up (bore scoring).
- 02Pull a spark plug or send an oil sample if scoring is suspected, and check oil consumption history.
- 03Confirm PDK fluid service history and drive through full shift range for harshness or hesitation.
- 04Inspect front AC condensers for debris packing, corrosion, and refrigerant leaks; verify AC holds cold in traffic.
- 05Check for coolant weeping at the water pump and connections, and look at coolant level and color.
- 06Scan for steering and PSM/chassis fault codes with a Porsche-capable tool (PIWIS).
- 07Inspect tires for even wear and matching sizes/dates; check brake rotor wear (or PCCB condition if fitted).
- 08Verify all keys, service book stamps, and check for any evidence of track use or curb/underbody damage.
Ask the seller
- ·Do you have the full Porsche dealer or specialist service history, including PDK/transmission fluid changes?
- ·Has the car ever consumed oil between services or had any engine noise investigated?
- ·Was this car tracked, and are the tires and brakes original spec or aftermarket?
- ·Are there any stored fault codes, and has the steering or PCM system ever been serviced?
What owners reported to NHTSA
0 owner complaints and 1 recalls on file for the 2015 PORSCHE 911 (public federal data).
1 recall. Verify completion with a VIN check
- 14V698000 · LATCHES/LOCKS/LINKAGES:HOOD:LATCH
Porsche Cars North America, Inc. (Porsche) is recalling certain model year 2014-2015 Porsche 911, Boxster, and Cayman vehicles manufactured May 7, 2014, to September 23, 2014. The front hood upper lock components were not manufactured to specification and may fail to securely latch the vehicle's ho
468 manufacturer service bulletins on file with NHTSA for this model year.
ELECTRICAL SYSTEM (99) · EQUIPMENT (98) · UNKNOWN OR OTHER (87) · ENGINE (59)
Own one of these?
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