Back to search

2019 PORSCHE 911

3.8L H6•RWD•DCT•gas
Be the first sponsor for this vehicle

For $99, we generate the full set of step-by-step repair procedures for this exact vehicle. Free for everyone, forever, with your name on every one.

Sponsor — $99
Dead battery / stuck in Park? Emergency neutral procedure for this 911 →
5-Year Cost of Ownership
$25,029 maintenance + known platform issues
~$5,006/yr · 420¢/mile equivalent · $7,281 maintenance + $15,248 expected platform issues
Compare this engine
vs
3.0L Twin Turbo H6
Common Problems & Known Issues

The 2019 911 (991.2 generation) is generally robust, but the 3.0L twin-turbo models face serious engine bearing issues that can grenade motors before 60,000 miles, while the naturally-aspirated 3.4L and 3.8L GT3/GT3 RS engines suffer valve train problems and expensive bore scoring on earlier examples.

Connecting Rod Bearing Failure (3.0L Twin-Turbo)

Occasional · high severity
Typical onset: 30,000-60,000 mi
Symptoms: metallic knocking at idle that worsens with RPM, low oil pressure warning, metal flakes in oil during analysis, catastrophic engine seizure if ignored
Fix: Requires complete engine-out teardown, crankshaft inspection, bearing replacement at minimum. If crank is scored or con-rods damaged, you're looking at short-block replacement or full rebuild. 40-60 labor hours for teardown, machining, reassembly.
Estimated cost: $15,000-35,000

Intermediate Shaft (IMS) Bearing Concern on GT3 Engines

Rare · high severity
Typical onset: 50,000-80,000 mi
Symptoms: grinding or whirring noise from engine mid-section, metallic debris in oil filter, sudden loss of power, check engine light with timing correlation codes
Fix: The 3.8L and 4.0L naturally-aspirated GT3 engines use a different design than old 996/997 IMS issues, but gear-driven valve train can fail. Engine must come out for inspection and replacement of intermediate shaft assembly. 50-70 hours all-in.
Estimated cost: $18,000-28,000

Transmission Oil Cooler Line Leaks

Common · medium severity
Typical onset: 40,000-80,000 mi
Symptoms: transmission fluid pooling under car, low fluid warnings on PDK models, burnt transmission smell, slipping or harsh shifts
Fix: Cooler lines run along undercarriage and corrode or crack at fittings, especially in salt states. Requires lift access, drain trans fluid, replace lines and reseal connections. 3-5 hours labor plus fluid refill and reset adaptations.
Estimated cost: $800-1,500

Rear Suspension Upper Link Bushing Failure

Occasional · medium severity
Typical onset: 50,000-90,000 mi
Symptoms: clunking over bumps from rear, unstable handling during hard cornering, uneven rear tire wear, alignment won't hold specs
Fix: Upper control arm bushings wear out, especially on cars with sport suspension or track use. Arms usually aren't serviceable with bushings alone—most techs replace full arms. Alignment mandatory after. 4-6 hours for both sides plus alignment.
Estimated cost: $1,800-2,800

Fuel Filter Clogging (All Models)

Occasional · medium severity
Typical onset: 60,000-100,000 mi
Symptoms: hesitation or stumble under throttle, rough idle after fill-ups, check engine light with lean fuel trim codes, hard starting when hot
Fix: In-tank fuel pump/filter assembly gets contaminated, especially from ethanol fuels. Requires fuel tank drop or access via rear seat removal depending on model. Filter isn't separately serviceable—entire pump module replacement. 4-6 hours labor.
Estimated cost: $1,200-2,000

Head Gasket Seepage on High-RPM Use (GT3/GT3 RS)

Rare · medium severity
Typical onset: 40,000-70,000 mi
Symptoms: oil weeping from cylinder head mating surface, slight coolant consumption, white residue on engine case, overheating under sustained high RPM
Fix: Track-driven GT3 engines can weep at head gaskets due to thermal cycling. Engine-out job, heads resurfaced, new gaskets, ARP studs recommended. 35-50 hours including teardown and reassembly with updated torque specs.
Estimated cost: $12,000-18,000

PDK Transmission Mount Deterioration

Common · low severity
Typical onset: 50,000-90,000 mi
Symptoms: clunk when shifting from reverse to drive, excessive driveline vibration at idle, transmission appears to sag on visual inspection, increased NVH during acceleration
Fix: Rubber transmission mounts crack and collapse, especially rear mount. Requires lifting car, supporting transmission, and swapping mounts. Straightforward but tight workspace. 2-3 hours labor.
Estimated cost: $600-1,200
Owner tips
  • Oil analysis every 5,000 miles is non-negotiable on turbo models—catch bearing wear before it grenades the motor.
  • GT3 engines need valve clearance checks every 20,000 miles; don't skip this or you risk expensive valve train damage.
  • Use only Porsche-approved 0W-40 oil; off-brand synthetics have caused bearing failures on turbo flat-sixes.
  • Pre-purchase inspection MUST include borescope of cylinders and oil filter dissection for metal—many engines fail young.
  • Track-driven cars should have transmission fluid changed every 20,000 miles; PDK clutches are expensive ($8k+) when cooked.
Buy a Carrera with full service records and oil analysis history, or a GT3 that's never seen a track—otherwise budget $20k+ for catastrophic engine work within the first few years.
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.
Stuck on a repair? Take it to The Diag Desk — ask a master tech about this exact car → real human answer within 24h, never AI
Building an app?
Free API access to all this data — 20 requests/day, no card required.
Get an API key →
Run a shop?
Manage repairs, estimates, and customers with ShopBase — $249/mo, all features included. Built by the same team.
Try ShopBase →