The 2013 i-MiEV is Mitsubishi's quirky city EV with a 16 kWh battery giving roughly 60 miles real-world range. Main issues center on the vacuum brake booster system, battery degradation, and oddball electric motor/inverter cooling problems rather than traditional powertrain failures.
Vacuum Brake Booster Failure
Common · high severityTypical onset: 50,000-90,000 mi
Symptoms: Hard brake pedal requiring excessive force, Brake warning light and/or vacuum pump error codes, Audible vacuum pump running continuously or cycling excessively, Loss of power assist making emergency stops dangerous
Fix: Replace electric vacuum pump assembly and check valve; often requires bleeding the entire brake system. NHTSA recalled this twice (14V-320 and 15V-527) but many units still fail post-recall. 3-4 hours labor including diagnostic and bleed procedure.
Estimated cost: $800-1,400
Battery Capacity Degradation
Common · medium severitySymptoms: Usable range drops below 40 miles on full charge, Battery capacity bars on dash decrease (original 16 bars), Rapid state-of-charge drop under acceleration or cold weather, Charging completes faster than it used to
Fix: LEV50N cells degrade faster in hot climates or with repeated fast-charging. Battery replacement is 8-10 hours labor but used packs run $3,000-5,000; new OEM discontinued. Some owners retrofit Chevy Bolt cells but this voids any remaining warranty and requires custom BMS work (15+ hours). No economical fix exists.
Estimated cost: $6,000-12,000
Front Motor/Inverter Coolant Leaks
Occasional · medium severityTypical onset: 70,000-110,000 mi
Symptoms: Pink coolant puddle under front of vehicle, Reduced power or turtle mode in hot weather, Inverter overtemperature warning on dash, Coolant reservoir level dropping without visible external leak
Fix: Electric motor and inverter share a sealed coolant loop separate from cabin heat. Hoses crack, reservoir tank seams fail, or motor inlet O-rings weep. Diagnosing the exact leak point takes 1-2 hours; motor removal for internal seals is 6-8 hours. Front subframe must come down for motor access, adding complexity.
Estimated cost: $400-2,200
12V Auxiliary Battery Failure
Common · medium severitySymptoms: Car won't enter READY mode even with main pack charged, Dash lights flicker or fail to illuminate, Key fob stops working, doors won't unlock, Clicking from under hood when pressing power button
Fix: Small 12V lead-acid battery (same concept as Prius) powers all computers and contactors. Lasts 3-5 years typical. Unlike ICE cars, a dead 12V leaves you stranded even with a full traction battery. Replacement is 0.5 hours, located under hood passenger side. Use AGM battery only—flooded cells fail faster.
Estimated cost: $200-350
AC System Failures (Compressor & Evaporator)
Occasional · low severityTypical onset: 60,000-100,000 mi
Symptoms: No cold air or intermittent cooling, Electric compressor not engaging (no clicking sound), Musty smell or moisture on passenger floor, Reduced driving range due to compressor cycling constantly
Fix: Electric AC compressor seals leak refrigerant or compressor fails internally; evaporator core corrosion also documented. Evaporator requires full dash removal (10-12 hours labor). Compressor replacement is easier at 3-4 hours but unit costs $800-1,200. TXV replacements common during evap jobs.
Estimated cost: $1,200-3,500
CHAdeMO DC Fast Charge Port Malfunction
Rare · medium severitySymptoms: DC fast chargers won't initiate charge (AC Level 2 still works), Error message on charger screen about communication failure, Charge port door won't unlock or latch properly, Burned or corroded pins visible in CHAdeMO inlet
Fix: Inlet pins corrode from weather exposure or arc damage from loose connections. Entire charge port assembly often needs replacement including wiring harness back to battery controller. 4-5 hours labor, parts are $600-900. Preventive: keep dust cap on and inspect pins annually.
Estimated cost: $1,000-1,800
Buy only if you need a cheap urban runabout under 40 miles/day and can wrench yourself—parts availability is drying up and battery replacement economics are brutal.
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.