The 2004 Camry is generally reliable, but the 4-cylinder models suffer from catastrophic oil consumption issues that can destroy engines, while both engines share typical high-mileage transmission and cooling problems.
2AZ-FE Engine Oil Consumption / Piston Ring Failure (2.4L I4 only)
Common · high severityTypical onset: 80,000-150,000 mi
Symptoms: Burning 1+ quart of oil every 1,000 miles with no visible leaks, Blue smoke from exhaust on startup or acceleration, Check engine light for catalyst efficiency codes (P0420/P0430), Fouled spark plugs, rough idle, eventual engine seizure if oil runs dry
Fix: Piston rings carboned-up from design flaw. Only real fix is engine rebuild with updated pistons/rings (18-24 labor hours) or used/reman engine swap (12-16 hours). Band-aid: frequent oil top-ups and spark plug changes every 15k miles.
Estimated cost: $3,500-5,500
Transmission Oil Cooler Line Corrosion and Leaks
Common · medium severityTypical onset: 100,000-180,000 mi
Symptoms: Red fluid puddles under vehicle, typically passenger side near radiator, Transmission slipping or delayed engagement when fluid gets low, Burnt transmission smell if driven while low on fluid
Fix: Steel lines rust through where they connect to radiator. Replace both cooler lines and top off transmission fluid (2-3 hours). Check radiator end tanks for cracks while you're there—often corroded too.
Estimated cost: $350-600
Automatic Transmission Mount Failure (Front Mount)
Common · medium severityTypical onset: 90,000-140,000 mi
Symptoms: Loud clunk when shifting from Park to Drive or Reverse, Excessive vibration at idle, especially with A/C on, Engine visibly rocking back and forth during acceleration
Fix: Hydraulic front engine mount collapses, allowing drivetrain to slam around. Replace mount—straightforward job but requires supporting engine (2-2.5 hours). Inspect other mounts while you're in there.
Estimated cost: $250-400
Evaporative Emissions System Leaks (Charcoal Canister/VSV)
Occasional · low severityTypical onset: 120,000+ mi
Symptoms: Check engine light with codes P0440, P0441, P0446, Fuel smell near rear of vehicle or inside cabin, Difficulty fueling—pump clicks off repeatedly
Fix: Charcoal canister saturates or cracks, VSV (vapor switching valve) sticks. Smoke test to locate leak (0.5 hours), then replace failed components. Canister lives under rear bumper, pain to access (1.5-2 hours total).
Estimated cost: $300-550
Steering Intermediate Shaft Clunk
Occasional · low severityTypical onset: 80,000-150,000 mi
Symptoms: Clunk or knock from steering column when turning at low speeds (parking lots), Felt through steering wheel, not suspension-related, More noticeable in cold weather
Fix: Universal joint in intermediate shaft wears out, needs lubrication or replacement. Lube job (0.5 hours) is temporary; proper fix is new shaft (1.5 hours). Not a safety issue, just annoying.
Estimated cost: $200-450
A/C Compressor Clutch Bearing Failure (3.0L V6 more common)
Occasional · medium severityTypical onset: 110,000-160,000 mi
Symptoms: Squealing or grinding noise from engine bay, worse with A/C on, A/C intermittently blows warm air, Bearing can seize and snap serpentine belt, killing alternator/water pump
Fix: Clutch bearing or entire compressor fails. If caught early, replace compressor only (2.5-3 hours). If belt snaps, add belt and possible water pump damage. Evacuate/recharge A/C system adds 1 hour.
Estimated cost: $650-1,100
Lower Ball Joint Wear (Especially in Rust Belt)
Occasional · high severityTypical onset: 100,000-180,000 mi
Symptoms: Clunking over bumps from front suspension, Tire wearing unevenly on inside edge, Steering wanders or feels loose, Ball joint can separate catastrophically—wheel folds under
Fix: Ball joints not serviceable separately—requires entire lower control arm replacement per side (2 hours per side). Must do alignment afterward. Inspect regularly above 100k miles.
Estimated cost: $400-700 per side
Excellent used buy IF you avoid 4-cylinder models or verify zero oil consumption—V6 versions are rock-solid and cheap to maintain.
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.