2013 NISSAN 370Z

Typical onset: 60,000-120,000 mi

Symptoms: metallic rattling on cold start that quiets when warm, excessive oil consumption (quart per 1,000 mi or worse), loss of compression in one or more cylinders, check engine light with misfire codes

Fix: Cylinder wall scoring from inadequate piston skirt clearance or oil starvation under high-G / high-RPM conditions. Some cases are piston ring land failure. Requires complete teardown, bore/hone if saveable, or short block replacement. 25-35 labor hours for full rebuild, 18-22 hours for short block swap.

Estimated cost: $8,000-15,000

Typical onset: 70,000-110,000 mi

Symptoms: burning oil smell from exhaust, oil level drops 1+ quart between changes, no visible external leaks, blue smoke on deceleration

Fix: Internal gallery gaskets deteriorate and allow oil into combustion chambers. Requires engine removal, complete disassembly to replace gallery gaskets, and often timing components while in there. 20-28 labor hours.

Estimated cost: $4,500-7,000

Typical onset: 50,000-90,000 mi

Symptoms: transmission slipping or erratic shifting, milky or pink transmission fluid, coolant mixing with ATF, transmission overheating warnings

Fix: Factory oil cooler inside radiator fails, allowing coolant and ATF to mix. Catastrophic for transmission if not caught early. Requires radiator replacement, transmission flush or rebuild if contamination occurred, and all cooler lines. 4-6 hours for cooler/radiator, add 12-18 hours if transmission needs rebuild.

Estimated cost: $1,200-2,500 (cooler only), $4,500-7,500 (if trans damaged)

Typical onset: 40,000-80,000 mi

Symptoms: clutch pedal goes to floor with no resistance, difficulty shifting into gear, fluid leak visible near bellhousing, clutch engagement point changes

Fix: Internal slave cylinder (CSC) fails due to heat and wear. Requires transmission removal to access. Smart to replace clutch assembly and throw-out bearing while trans is out. 8-10 labor hours.

Estimated cost: $1,500-2,800

Symptoms: engine stumbles or cuts out during hard cornering, fuel pump priming issues in hot weather, difficulty starting when fuel level below 1/4 tank, limp mode during aggressive driving

Fix: Inadequate fuel tank baffling and heat-soaked fuel lines cause starvation under lateral G-loads or hot conditions. Aftermarket solutions include fuel pump upgrades, return-style fuel system conversion, or tank baffles. OEM fix is fuel filter/pump assembly replacement with improved design. 3-5 hours labor.

Estimated cost: $800-1,500

Typical onset: 60,000-100,000 mi

Symptoms: clunking from rear on acceleration or deceleration, excessive drivetrain play, vibration during hard launches, wandering rear end under power

Fix: Differential mounting bushings wear out from performance driving. Requires subframe drop or partial removal to access. Upgraded polyurethane bushings recommended. 4-6 labor hours.

Estimated cost: $600-1,200

Symptoms: car will not start, steering wheel locked, error message about steering lock system, clicking noise from steering column when trying to start, complete no-start condition

Fix: Electronic steering lock mechanism fails and prevents starting. Common enough that many owners preemptively disable or remove the system. Dealer replacement or aftermarket delete kit. 1-2 hours labor for delete, 2-3 for OEM replacement.

Estimated cost: $150-400 (delete kit), $800-1,200 (OEM replacement)