The 2016 Daihatsu Mira is a Japanese kei car with a 0.66L turbocharged three-cylinder engine. While generally reliable for urban commuting, these small-displacement high-revving engines are sensitive to maintenance neglect and can develop serious internal wear issues when oil change intervals are extended or low-quality oil is used.
Timing Chain Stretch and Guide Wear
Common · high severityTypical onset: 80,000-120,000 mi
Symptoms: Rattling noise on cold start that disappears after warm-up, Check engine light with timing correlation codes, Rough idle or hesitation, Metal shavings in oil filter
Fix: Timing chain, tensioner, and guides replacement requires 6-8 hours labor. Chain stretch is accelerated by infrequent oil changes on these high-RPM kei engines. Often discover worn cam journals during this job, adding cost.
Estimated cost: $1,200-2,000
Hydraulic Valve Lifter Collapse
Common · medium severityTypical onset: 70,000-110,000 mi
Symptoms: Persistent ticking or tapping from valve cover area, Noise worsens when hot, Loss of power at higher RPMs, Occasional misfire codes
Fix: All lifters should be replaced as a set (not individually) along with fresh oil and filter. Requires 4-5 hours with cylinder head removal for proper access. These small engines run lifters hard; contaminated or thin oil kills them quickly.
Estimated cost: $800-1,400
Head Gasket Failure
Occasional · high severityTypical onset: 90,000-140,000 mi
Symptoms: White smoke from exhaust, Coolant loss with no visible leaks, Overheating episodes, Oil and coolant mixing (milky oil cap), Bubbles in coolant reservoir
Fix: Head gasket replacement on these three-cylinders takes 8-10 hours. Common to find warped head requiring machining ($150-250 extra). Often triggered by overheating from failed water pump or clogged radiator. Recommend pressure test cooling system during any major service.
Estimated cost: $1,800-2,800
CVT Transmission Oil Cooler Clogging
Common · medium severityTypical onset: 60,000-90,000 mi
Symptoms: Transmission overheating warning light, Shuddering during acceleration, Loss of power in hot weather or uphills, Burnt smell from transmission area
Fix: CVT oil cooler gets clogged with debris, causing overheating and premature CVT wear. Cooler replacement takes 3-4 hours and must include full CVT fluid flush with Daihatsu-spec fluid. Ignoring this leads to $4,000+ CVT replacement.
Estimated cost: $600-900
Harmonic Balancer Deterioration
Occasional · medium severityTypical onset: 100,000-150,000 mi
Symptoms: Vibration at idle that smooths out at higher RPM, Squealing or chirping from front of engine, Visible wobble on crankshaft pulley, Serpentine belt wear or throwing
Fix: Rubber isolator separates from hub, causing wobble and potential timing chain damage if pulley comes loose. Replacement takes 2-3 hours. Check whenever doing timing chain work—failed balancers can cause premature chain stretch.
Estimated cost: $400-650
Transmission Mount Failure
Common · low severityTypical onset: 60,000-100,000 mi
Symptoms: Clunking when shifting from park to drive, Excessive engine movement visible when revving, Vibration through shifter and floor, Transmission hitting crossmember on rough roads
Fix: CVT mounts wear faster than manual transmission mounts due to constant torque cycling. Replace both engine and transmission mounts together (2-3 hours labor). Using OEM or quality aftermarket critical—cheap mounts fail in 20,000 miles.
Estimated cost: $350-600
Buy only with complete service records showing frequent oil changes and CVT maintenance—neglected examples become money pits after 80K miles, but well-maintained ones are affordable city transportation.
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.