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2022 PORSCHE 718 CAYMAN GTS

4.0L H6•RWD•DCT•gas
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5-Year Cost of Ownership
$42,622 maintenance + known platform issues
~$8,524/yr · 710¢/mile equivalent · $8,497 maintenance + $13,375 expected platform issues
Common Problems & Known Issues

The 2022 718 Cayman GTS with the 4.0L flat-six is a high-strung naturally-aspirated engine that's generally reliable but has documented issues with bore scoring and IMS bearing failures carried over from earlier flat-six designs, plus transmission cooling and mount problems under hard use.

Cylinder Bore Scoring and Piston Ring Failure

Occasional · high severity
Typical onset: 40,000-80,000 mi
Symptoms: excessive oil consumption (1qt per 1000 mi or worse), cold-start smoke from exhaust, loss of compression, rough idle when warm, metallic rattling under load
Fix: Requires engine removal and complete teardown. Cylinder sleeves or new case, pistons, rings, bearings. 40-50 labor hours for full rebuild or short block replacement. This is the big-ticket item on these engines.
Estimated cost: $18,000-28,000

Transmission Oil Cooler Line Leaks

Common · medium severity
Typical onset: 30,000-60,000 mi
Symptoms: transmission fluid puddles under car, burnt transmission fluid smell, low fluid warning on dash, shifting quality degradation
Fix: Cooler lines crack at fittings or corrode. Replace lines and top off fluid. 2-3 hours labor. Catch it early before transmission overheats and damages clutches.
Estimated cost: $600-1,200

Transmission Mount Deterioration

Common · low severity
Typical onset: 50,000-90,000 mi
Symptoms: clunking when shifting or engaging clutch, excessive drivetrain movement felt through cabin, vibration at idle in gear, visible cracking in rubber mount
Fix: Track use and aggressive launches accelerate wear. Replace all transmission mounts as a set. 3-4 hours labor with proper lifting.
Estimated cost: $800-1,400

Fuel Filter Clogging (High-Mileage or Poor Fuel Quality)

Occasional · medium severity
Typical onset: 60,000-100,000 mi
Symptoms: hesitation under hard acceleration, stumbling at high RPM, check engine light with lean codes, reduced power output
Fix: In-tank fuel pump module replacement required, filter not serviceable separately on this platform. 4-5 hours labor, tank drop needed.
Estimated cost: $1,200-1,800

Head Gasket Seepage (Early Warning Sign)

Rare · high severity
Typical onset: 50,000-100,000 mi
Symptoms: oil weeping from cylinder head mating surface, coolant level slowly dropping, white residue on oil filler cap, rough cold starts
Fix: If caught early, head gasket replacement with ARP studs. Engine-out job. 35-45 hours labor. Often discovered during bore scoring inspection, which means full rebuild anyway.
Estimated cost: $12,000-18,000

Connecting Rod Bearing Wear (Track/Aggressive Use)

Rare · high severity
Symptoms: rod knock at idle (rhythmic metallic tapping), sudden loss of oil pressure, metal shavings in oil filter, catastrophic failure if ignored
Fix: High-RPM abuse or missed oil changes cause premature wear. Requires engine teardown, crank polishing or replacement, new bearings throughout. 30-40 hours if crank salvageable, more if not. Often discovered too late.
Estimated cost: $15,000-25,000
Owner tips
  • Check oil consumption religiously every 500 miles—these engines can consume oil normally, but sudden increases signal bore scoring
  • Use Porsche-spec oil (0W-40) and change every 5,000 miles maximum, especially with track use
  • Inspect transmission cooler lines annually for seepage or corrosion at fittings
  • Pre-purchase inspection must include borescope cylinder inspection and compression test—non-negotiable
  • Keep detailed service records; engines with documented frequent oil changes hold value better and last longer
Buy only with comprehensive PPI including borescope—when healthy these are exceptional drivers, but engine rebuilds cost more than the depreciation you'll save buying used.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
537 jobs across 17 categories
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.
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