The 2005 RSX is a reliable sport compact with Honda K-series DNA, but second-gear synchro wear and oil consumption from piston ring issues plague higher-mileage examples. The Type-S gets more abuse and shows these problems sooner.
Second Gear Synchro Failure (Manual Trans)
Common · medium severityTypical onset: 80,000-150,000 mi
Symptoms: Grinding or crunching into second gear, especially when shifting quickly, Second gear pops out under load or deceleration, Difficulty engaging second even with full clutch depression
Fix: Transmission removal and rebuild with synchro assembly replacement. 8-12 hours labor depending on shop efficiency. Often do all synchros and inspect shift forks while you're in there.
Estimated cost: $1,800-3,200
Excessive Oil Consumption / Piston Ring Wear
Common · high severityTypical onset: 120,000-180,000 mi
Symptoms: Burning a quart every 500-1,000 miles with blue smoke on startup or hard acceleration, Fouled spark plugs, misfires on cold start, Carbon buildup visible in intake manifold or throttle body
Fix: Piston ring replacement requires full engine teardown — rings, hone cylinders, new gaskets throughout. 18-24 hours labor. Some shops recommend short-block swap instead if cylinder taper is excessive. High-mileage K20s with aggressive driving history are worst offenders.
Estimated cost: $3,500-5,500
Transmission Mount Failure (Upper and Lower)
Common · low severityTypical onset: 70,000-120,000 mi
Symptoms: Clunking on hard acceleration or shifts, especially 1-2 upshift, Excessive engine movement visible from engine bay during throttle blips, Vibration through shifter and floor at idle
Fix: Replace upper and lower mounts together — upper is hydraulic and tends to leak/collapse. 2-3 hours labor. Common wear item on sport compacts.
Estimated cost: $350-650
Headlight Lens Delamination / Moisture Intrusion
Occasional · low severitySymptoms: Condensation inside headlight housing that won't evaporate, Lens separation visible at edges, yellowing or hazing, Low beam flicker or intermittent operation due to moisture on bulb connections
Fix: Reseal existing housings (1.5 hours) or replace units. OE housings are discontinued, so aftermarket quality varies wildly. NHTSA had a recall for some early RSX headlight assemblies, but not all VINs covered.
Estimated cost: $200-800
Clutch Master Cylinder Failure (Manual)
Occasional · medium severityTypical onset: 100,000-140,000 mi
Symptoms: Clutch pedal sinks slowly to floor and doesn't return fully, Difficulty shifting or clutch won't disengage completely, Visible fluid leak at firewall or inside cabin under dash
Fix: Replace master and slave cylinder together as a system flush/bleed. 3-4 hours labor. Slave is internal on these, so trans removal not required but tight access.
Estimated cost: $400-750
Cracked Exhaust Manifold / Header
Occasional · low severityTypical onset: 90,000-150,000 mi
Symptoms: Ticking noise from engine bay on cold start that fades as engine warms, Exhaust smell in cabin with heat on, Visible cracks near collector or flex joint on factory manifold
Fix: Aftermarket header replacement most common fix (factory manifold is expensive and cracks again). 3-4 hours labor. Type-S owners often upgrade to aftermarket anyway.
Estimated cost: $500-1,200
Buy a well-maintained base model with records under 100k and you'll have a fun, reliable daily; avoid high-mileage Type-S examples with unknown history unless you budget for a transmission and engine refresh.
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.