The 2001 NSX with its 3.2L C32B V6 is Honda-engineered for reliability, but age and snap-ring transmission concerns, plus oil maintenance lapses leading to catastrophic engine failures, define the ownership experience at this point in its lifecycle.
Snap-Ring Transmission Failure (Early VIN Range)
Occasional · high severitySymptoms: sudden loss of all gears, transmission pops out of gear under load, metallic grinding on engagement, complete transmission lockup
Fix: Transmission removal and rebuild or replacement with updated snap-ring design; 12-16 hours labor for R&R plus internal rebuild time. Many '91-'92 units affected, but some early 2000-2001 cars got leftover defective transmissions from inventory. VIN check is critical.
Estimated cost: $4,500-8,000
Connecting Rod Bearing Failure / Spun Bearings
Occasional · high severityTypical onset: 80,000-150,000 mi
Symptoms: metallic knocking at idle that worsens with RPM, sudden loss of oil pressure, metal shavings in oil, catastrophic engine seizure if driven after symptoms appear
Fix: Often results from extended oil change intervals or running low on oil. Requires engine removal, teardown, crankshaft inspection/machining, new bearings, and reassembly. Engine-out is 18-22 hours; if crank is damaged, add machine shop time. Many owners opt for short-block replacement at this point.
Estimated cost: $8,000-15,000
Head Gasket Weeping / Coolant Seepage
Common · medium severityTypical onset: 100,000-160,000 mi
Symptoms: slow coolant loss with no visible external leaks, white residue on spark plugs, slight misfire on cold start, sweet smell from exhaust on warm-up
Fix: C32B is an interference engine with timing belt. Head gasket job requires engine-out for proper access due to mid-engine layout; 20-24 hours labor. Always replace timing belt, water pump, tensioners, and cam/crank seals while in there.
Estimated cost: $5,500-8,500
Transmission Oil Cooler Line Leaks
Common · medium severityTypical onset: 60,000-120,000 mi
Symptoms: ATF puddles under center of car, low transmission fluid warnings, burnt ATF smell, slipping between gears if fluid level drops significantly
Fix: Rubber hoses and metal hard-lines corrode or crack where they route near exhaust. Access requires removing undertray and sometimes exhaust components. 3-5 hours labor to replace cooler lines and top off fluid.
Estimated cost: $800-1,500
Engine Mount Deterioration (All Mounts)
Common · low severityTypical onset: 80,000-140,000 mi
Symptoms: excessive engine movement on throttle blip, clunking during acceleration/deceleration, vibration through cabin at idle, difficulty engaging gears smoothly
Fix: Rubber mounts crack and separate. Transmission mount is most critical and fails first. All three engine mounts should be inspected and replaced as a set. Mid-engine layout makes access labor-intensive; 6-8 hours for all mounts.
Estimated cost: $1,800-3,200
Window Regulator / Motor Failure
Occasional · low severityTypical onset: 70,000-130,000 mi
Symptoms: windows move slowly or stop mid-travel, grinding noise when operating windows, windows drop into door and won't raise, one-touch auto function stops working
Fix: Plastic gears in regulator strip, or motor brushes wear out. Door panel removal and regulator replacement; 2-3 hours per side. NLA parts from Acura mean sourcing refurbished units or aftermarket.
Estimated cost: $600-1,200
Fuel System Degradation (Filter, Lines, Tank Rust)
Occasional · medium severityTypical onset: 90,000+ mi
Symptoms: rough idle and hesitation, fuel smell in cabin or near tank, check engine light with lean codes, hard starting after sitting
Fix: In-tank fuel filter clogs (not easily serviceable without tank drop), and steel fuel lines rust from road salt exposure. Tank drop is 4-6 hours; if tank has internal rust, replacement or professional cleaning required. Expect full fuel system service at this age.
Estimated cost: $1,200-3,000
Buy only with comprehensive service records proving religious oil changes and snap-ring status confirmation; budget $3K-5K annually for age-related repairs, but a well-maintained example is still one of the most reliable exotics you can own.
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.