The 2007 Honda Fit is generally reliable with Honda's proven 1.5L engine, but early first-gen models suffer from specific transmission cooler failures, ignition switch issues, and in rare cases catastrophic engine damage from a factory defect affecting piston ring wear.
Automatic Transmission Oil Cooler Failure
Common · high severityTypical onset: 60,000-120,000 mi
Symptoms: Transmission fluid mixing with coolant (strawberry milkshake in overflow tank), Transmission slipping or delayed engagement, Overheating transmission, burnt smell, Coolant loss with no external leaks
Fix: Replace transmission oil cooler (integrated into radiator on these), flush both cooling system and transmission completely. If contamination went unnoticed, transmission rebuild often required. 4-6 hours labor for cooler/radiator replacement, 12-18 hours if transmission needs rebuild.
Estimated cost: $800-1,200 cooler only; $2,500-4,000 if transmission damaged
Ignition Switch / Lock Cylinder Failure
Common · high severityTypical onset: 80,000-150,000 mi
Symptoms: Key won't turn or gets stuck in ignition, Starter won't engage even with new battery, Intermittent no-start, dash lights work but nothing happens, Key difficult to remove after shutting off
Fix: Replace ignition lock cylinder and/or ignition switch assembly. Honda issued a service bulletin but no recall. Lock cylinder typically fails first, then switch contacts wear. 1.5-2.5 hours labor depending on whether steering column needs partial disassembly.
Estimated cost: $300-600
Piston Ring / Excessive Oil Consumption (Engine Rebuild)
Occasional · high severityTypical onset: 80,000-150,000 mi
Symptoms: Burning 1+ quart oil every 1,000 miles, Blue smoke from exhaust on startup or acceleration, Fouled spark plugs, Loss of compression, rough idle
Fix: Factory defect in some 2007-2008 engines with inadequate piston ring tension. Requires complete engine rebuild with updated piston rings or short block replacement. Honda extended warranty to 8yr/125k miles but most are out of coverage now. 18-24 hours labor for rebuild, 12-15 for short block swap.
Estimated cost: $3,500-5,500
Passenger Airbag Inflator (Takata Recall)
Common · high severitySymptoms: NHTSA recall notice received, No symptoms until airbag deploys with metal fragments
Fix: Critical safety recall for Takata airbag inflators that can explode. Four separate recall campaigns issued. Check VIN at NHTSA.gov—if recall incomplete, Honda dealers replace at no charge. 1-2 hours labor but parts have been on backorder for years in some regions.
Estimated cost: $0 (recall repair)
Front Engine Mount / Transmission Mount Failure
Common · medium severityTypical onset: 70,000-120,000 mi
Symptoms: Excessive vibration at idle, especially with A/C on, Clunking when shifting from park to drive, Engine rocking visible under hard acceleration, Vibration through steering wheel and shifter
Fix: Front engine mount (hydraulic) and right-side transmission mount wear out from the transverse engine setup. Replace both at same time. 2-3 hours labor with engine support required.
Estimated cost: $400-700
Power Window Master Switch Failure
Occasional · low severityTypical onset: 100,000+ mi
Symptoms: Driver's window won't go up/down from master switch, Window works from passenger switch but not driver's, Intermittent operation, works after pressing switch repeatedly, Other windows not responding to master switch
Fix: Driver's door master switch contacts wear out. Honda issued recall for fire risk but limited scope. Replacement switch from Honda required (aftermarket units fail quickly). 0.5-1 hour labor, switch removal straightforward.
Estimated cost: $150-300
Buy one if the oil consumption issue and airbag recalls are confirmed resolved and transmission cooler has been addressed or replaced—otherwise solid city car with cheap parts, but the piston ring defect can be a ticking time bomb.
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.