The 2009 Altima is split into two reliability worlds: the 2.5L I4 is generally solid but suffers CVT transmission failures, while the 3.5L V6 has catastrophic engine problems from oil consumption leading to spun bearings and complete internal destruction.
CVT Transmission Failure (2.5L models)
Common · high severityTypical onset: 80,000-130,000 mi
Symptoms: shuddering or jerking during acceleration, whining or grinding noise, hesitation when accelerating from stop, slipping between gear ratios, check engine light with P0868 or P17F0 codes
Fix: CVT replacement or remanufactured unit swap. 8-12 labor hours. Oil cooler often replaced simultaneously as contamination is common cause. Nissan extended warranty to 120k on some VINs but most are out of coverage now.
Estimated cost: $3,500-5,500
VQ35DE Catastrophic Engine Failure from Oil Consumption (3.5L models)
Common · high severityTypical onset: 60,000-120,000 mi
Symptoms: excessive oil consumption (1qt per 1000mi or worse), blue smoke from exhaust, engine knock or rod knock, low oil pressure warning, sudden loss of power followed by seized engine
Fix: Piston ring wear allows oil into combustion chamber. If caught early, engine rebuild with new rings/pistons (25-35 hours). Most cases discovered too late after bearing damage — requires short block or complete engine replacement (20-30 hours installed). This is THE killer issue for V6 Altimas of this generation.
Estimated cost: $4,500-8,000
Front Lower Control Arm Bushing Failure
Common · medium severityTypical onset: 70,000-110,000 mi
Symptoms: clunking over bumps, steering wheel vibration, uneven tire wear on inside edge, wandering or loose steering feel
Fix: Front lower control arm bushings deteriorate. Replace complete control arms (Nissan doesn't sell bushings separately for reasonable cost). 2-3 hours both sides with alignment. Related to NHTSA suspension recall but many vehicles still have worn components.
Estimated cost: $600-900
Transmission Mount Collapse (both engines)
Common · low severityTypical onset: 80,000-140,000 mi
Symptoms: excessive vibration at idle in gear, clunk when shifting from reverse to drive, engine rocks forward during hard acceleration, visible sagging of engine when inspected from below
Fix: Upper transmission mount (torque mount) hydraulic fluid leaks out and mount collapses. Simple replacement, 1-1.5 hours. Often discovered during CVT diagnosis but not the cause of transmission problems.
Estimated cost: $200-350
Crankshaft Position Sensor Failure (2.5L primarily)
Occasional · high severitySymptoms: no-start condition with cranking, stalling while driving with no restart, intermittent dying at operating temperature, P0335 or P0340 codes
Fix: Sensor fails due to heat exposure. Located on rear of engine block near flywheel. 1.5-2 hours labor due to access difficulty. Always verify with scope testing before replacement as wiring issues can mimic sensor failure.
Estimated cost: $250-400
Strut Mount Bearing Failure
Occasional · low severityTypical onset: 90,000-150,000 mi
Symptoms: clunking or popping when turning steering wheel while stopped, grinding noise during turns, steering doesn't return to center smoothly
Fix: Front strut mount bearings wear and bind. Replace strut mounts (upper mount assemblies). 2-3 hours both sides. Often done when replacing struts but can be done independently.
Estimated cost: $350-550
Buy a 2.5L I4 model with documented CVT replacement or budget $4k for eventual transmission work; avoid the 3.5L V6 entirely unless you can verify meticulous oil consumption monitoring by previous owner — it's a time bomb.
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.