The VQ37VHR is generally bulletproof, but the 2010 370Z suffers from a catastrophic design flaw: inadequate oil gallery cooling under sustained high RPM leads to bearing failure and total engine destruction, especially in spirited driving or track use. Manual transmission models also face oil cooler and CSC failures.
VQ37VHR Oil Gallery / Bearing Failure (Engine Grenade)
Occasional · high severityTypical onset: 60,000-100,000 mi
Symptoms: metallic knocking at idle that worsens with RPM, sudden loss of oil pressure, check engine light with low oil pressure codes, catastrophic failure often happens without warning during spirited driving
Fix: Total engine replacement or full rebuild. Rod bearings starve first, then mains. Oil starvation in right-hand turns under high-G exacerbates it. Expect 25-35 hours labor for short block swap, 40+ for full teardown rebuild with machine work. Many owners go straight to used JDM longblock.
Estimated cost: $8,000-15,000
Concentric Slave Cylinder (CSC) Failure
Common · high severityTypical onset: 40,000-80,000 mi
Symptoms: clutch pedal stays on floor, inability to shift or disengage clutch, fluid leak visible at bell housing, progressive loss of clutch feel before total failure
Fix: CSC is inside the transmission bell housing—requires trans removal. 8-10 hours labor. Smart move is to replace with upgraded aftermarket unit (ZSpeed, Z1) and do clutch/flywheel while you're in there since labor is already spent.
Estimated cost: $1,200-2,500
Transmission Oil Cooler Line Failure
Common · medium severityTypical onset: 70,000-110,000 mi
Symptoms: transmission fluid puddles under car, burnt transmission smell, slipping or erratic shifts after fluid loss, lines crack at crimp fittings or corrode at frame mount points
Fix: Replace both cooler lines preventively—OEM lines are known weak points. 2-3 hours labor. Includes fluid refill and often a transmission mount while you're under there since they sag by this mileage.
Estimated cost: $400-800
Fuel Starvation / Fuel Level Sender Issues
Occasional · medium severitySymptoms: engine stumble or cut-out during hard cornering with 1/4 tank or less, erratic fuel gauge readings, fuel pump whine, limp mode under sustained high-G
Fix: Two issues: saddle tank design starves under lateral load, and fuel level senders fail causing gauge issues. Sender replacement requires tank drop, 4-5 hours. For track guys, aftermarket fuel starvation kit is mandatory.
Estimated cost: $600-1,200
Steering Lock Module Failure
Occasional · high severityTypical onset: 50,000-90,000 mi
Symptoms: car won't start, steering lock won't disengage, dash warning about steering lock malfunction, clicking from column when trying to start, total no-start condition, engine won't crank
Fix: Electronic steering lock motor fails and prevents ignition. Dealer-only part initially, now available aftermarket. 2 hours labor to replace, but many owners delete the system entirely with fuse pull or aftermarket bypass to prevent future failure.
Estimated cost: $500-900
Differential Bushings and Transmission Mount Deterioration
Common · low severityTypical onset: 60,000-100,000 mi
Symptoms: clunking on throttle application or deceleration, vibration at highway speed, shifter slop or vague engagement, wheel hop under hard acceleration
Fix: Diff and trans mounts are rubber and deteriorate faster with performance driving. Trans mount is 1.5 hours, diff bushings 3-4 hours with subframe support. Upgrade to polyurethane units for longevity.
Estimated cost: $600-1,400
Buy it if you love the platform, but factor $3,000-5,000 into purchase price for CSC, cooling upgrades, and preventive maintenance—or risk a $12k engine replacement gambling on the previous owner's mechanical sympathy.
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.