Mazda Millenia reliability: common problems by model year
Across 2 model years, the Mazda Millenia has 47 owner-filed NHTSA complaints and 0 recalls on record. The most-reported areas are power train and fuel system. 1998 drew the most complaints (29), 1997 the fewest (18).
2
Model years tracked
47
Owner complaints
0
Recalls
29
Median per year
Source: NHTSA complaints and recalls filed for Mazda Millenia vehicles (US, public record).
Which Millenia years have the most problems?
Complaint volume by model year. Raw NHTSA totals, not adjusted for sales volume or time on the road, so older and higher-selling years accumulate more. Every year links to its full breakdown.
The sentiment among long-term owners is predominantly negative, with a strong consensus on poor reliability, high maintenance costs, and significant mechanical failures, particularly as the vehicle ages. The car is acknowledged for its initial quality and driv
Transmission failures: including complete replacement under 37,000 miles, delayed shifting, metal shavings in fluid, and general unreliability. Frequency: very frequent.
Ignition system failures: faulty ignition coils (noted as expensive, with reports of $500 per coil), spark plugs, wires, rotors, and caps causing rough idle, shaking on startup, and misfires. Frequency: very frequent.
Cooling system problems: overheating, coolant leaks (including from cylinder head), suspected water pump or thermostat failures. Frequency: recurrent.
Electrical system and parasitic battery drain: causing the vehicle to die overnight despite a new battery, along with complex electrical diagnostics for no-start conditions. Frequency: recurrent.
Engine failures (Miller Cycle V6): described as temperamental, with major issues and hard-to-find parts. Frequency: recurrent.
Owner insights cover all generations of the Millenia. Individual model years are broken down above.