1998 Mazda Millenia: common problems and reliability
The 1998 Mazda Millenia has 29 owner-filed NHTSA complaints and 0 recalls on record. The most-reported areas are engine and engine cooling and power train. Owners most often flag transmission failures — including complete replacement under 37,000 miles, delayed shifting, metal shavings in fluid, and general unreliability. frequency: very frequent.
Safety record for the 1998 model year
29
Owner complaints
0
Recalls
3
Crash reports
0
Fire reports
Source: NHTSA complaints and recalls filed for 1998 Mazda Millenia vehicles (US, public record).
Where owners report problems
engine and engine cooling
5
power train
5
fuel system
4
gasoline
4
vehicle speed control
4
What owners say across generations
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.