The 2004 Accord is generally reliable, but the V6 with automatic transmission has a catastrophic failure history, and all models face Takata airbag recalls. The four-cylinder with manual or automatic is notably more durable.
V6 Automatic Transmission Failure (Complete Internal Destruction)
Common · high severityTypical onset: 80,000-120,000 mi
Symptoms: Harsh or delayed 2-3 shift, then slipping in 2nd or 3rd gear, Burnt transmission fluid smell, dark or metallic fluid, Total loss of drive with grinding noise or no movement in any gear, Check engine light with P0730, P0740, P0753 codes
Fix: The 5-speed automatic behind the 3.0L V6 has weak clutch packs and inadequate cooling. Rebuilds rarely last; most shops recommend remanufactured unit replacement. 6-8 hours labor for R&R, plus fluid and cooler line flush.
Estimated cost: $2,800-4,200
Takata Airbag Inflator Rupture Risk (All Models)
Common · high severitySymptoms: Recall notice received (check VIN at NHTSA or Honda), SRS light may or may not illuminate, No symptoms until deployment—then metal shrapnel can injure or kill occupants
Fix: Driver and passenger airbag inflators degrade over time in humid climates and can explode. This is a federally-mandated recall—Honda replaces free at any dealer. 1-2 hours per inflator. DO NOT IGNORE.
Estimated cost: $0 (recall repair)
Engine Oil Consumption / Piston Ring Failure (I4 K24)
Occasional · high severityTypical onset: 120,000-200,000 mi
Symptoms: Burning 1+ quart every 500-1,000 miles, Blue smoke on startup or under acceleration, Fouled spark plugs, misfires (P0300-P0304), Low oil warning light between changes
Fix: Piston rings wear or carbon-pack, losing compression. Some cases tied to extended oil change intervals. Requires complete tear-down: all pistons, rings, hone cylinders, head gasket set, timing components. 18-24 hours labor. Many opt for used low-mile engine swap instead (8-12 hours).
Estimated cost: $3,500-5,500 rebuild; $2,000-3,200 used engine swap
Power Steering Pump Whine and Leak
Common · low severityTypical onset: 100,000-150,000 mi
Symptoms: Groaning or whining noise when turning, especially when cold, Fluid leak at pump body or high-pressure line connection, Intermittent heavy steering at low speed
Fix: Pump seals degrade; sometimes the pressure hose O-ring at the pump fails. Pump replacement is 2-3 hours, includes fluid flush. If just hose/O-ring, 1 hour.
Estimated cost: $350-650
Transmission Mount Failure (All Models)
Common · medium severityTypical onset: 80,000-130,000 mi
Symptoms: Clunk when shifting from Park to Drive or Reverse, Vibration at idle in Drive with brake applied, Excessive engine rocking during acceleration
Fix: The upper transmission mount (engine side) uses a fluid-filled design that collapses. Replacement requires supporting the engine from above or below. 1.5-2 hours labor.
Estimated cost: $200-350
Front Lower Ball Joint Wear
Occasional · medium severityTypical onset: 90,000-140,000 mi
Symptoms: Clunking over bumps from front suspension, Wandering or loose feel in steering, Excessive play visible during suspension inspection, Tire wear on inside edge if severe
Fix: Ball joints are pressed into the lower control arm; most techs replace the entire arm assembly for reliability. 2-3 hours per side including alignment.
Estimated cost: $400-700 both sides with alignment
Starter Motor Failure
Occasional · medium severityTypical onset: 120,000-180,000 mi
Symptoms: Single click or rapid clicking when turning key, no crank, Intermittent no-start when hot, starts fine when cool, Grinding noise during start attempt (worn Bendix gear)
Fix: Starter solenoid contacts wear or motor brushes fail. V6 is easier access (1.5 hours); I4 requires removing intake manifold support bracket (2-2.5 hours).
Estimated cost: $350-550
Buy the four-cylinder with confidence; avoid the V6 automatic like the plague unless transmission has been replaced and airbag recalls are cleared.
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.