2001 Mazda Millenia

The 2001 Mazda Millenia was a mid-size luxury sedan known for its comfortable ride and distinctive styling. Engine options included a 2.5L V6 producing 170 horsepower and 160 lb-ft of torque, and a supercharged 2.3L Miller Cycle V6 producing 210 horsepower and 217 lb-ft of torque. Both engines were paired with a 4-speed automatic transmission. Owners often praised the Millenia for its smooth ride, comfortable interior, and unique engine technology (especially the Miller Cycle). Common complaints included reliability issues, specifically regarding the Miller Cycle engine, and the availability of parts.

Engine

2.5L V6

• Oil Leaks
  • Description/Symptoms: Oil leaks often originate from the valve cover gaskets and oil pan gasket. Visible oil drips under the car, burning oil smell, and low oil levels are common symptoms.
  • Solution: Replace the valve cover gaskets and/or oil pan gasket.
  • Estimated Cost to Fix: $150 - $300+

2.3L Miller Cycle V6

• Supercharger Failure
  • Description/Symptoms: The supercharger can fail due to worn bearings, resulting in a loss of power, whining noises from the engine, and potential engine damage.
  • Solution: Supercharger rebuild or replacement.
  • Estimated Cost to Fix: $800 - $2000+
• Vacuum Leaks
  • Description/Symptoms: The Miller Cycle engine has a complex vacuum system that can develop leaks over time. These leaks can cause rough idling, poor fuel economy, and difficulty starting.
  • Solution: Identify and repair or replace the vacuum lines and associated components.
  • Estimated Cost to Fix: $100 - $400+
• EGR Valve Failure
  • Description/Symptoms: The EGR valve failing causes a check engine light, and rough idling.
  • Solution: Replace the EGR Valve
  • Estimated Cost to Fix: $250 - $500+

Transmission

4-Speed Automatic

• Harsh Shifting
  • Description/Symptoms: The transmission may exhibit harsh or erratic shifting, especially between 2nd and 3rd gear.
  • Solution: Replacing the solenoids within the transmission will fix the issue
  • Estimated Cost to Fix: $400 - $800+
• Torque Converter Failure
  • Description/Symptoms: Shuddering during acceleration.
  • Solution: Replacement of the torque converter will fix the issue.
  • Estimated Cost to Fix: $500 - $1200+

Suspension

• Strut Mount Failure
  • Description/Symptoms: Worn strut mounts can cause clunking noises, especially when going over bumps. Steering may feel loose or vague.
  • Solution: Replace the strut mounts.
  • Estimated Cost to Fix: $200 - $400+
• Sway Bar Link Failure
  • Description/Symptoms: Clicking or rattling noises from the front or rear suspension while driving over uneven surfaces, particularly at lower speeds. The handling may feel less stable.
  • Solution: Replacing sway bar links
  • Estimated Cost to Fix: $100 - $200+

Electrical

• Alternator Failure
  • Description/Symptoms: Dimming headlights, warning lights on the dashboard (battery light), difficulty starting the car, and eventually a complete loss of electrical power.
  • Solution: Alternator replacement
  • Estimated Cost to Fix: $300 - $600+
• Power Window Failure
  • Description/Symptoms: The power windows may stop working intermittently or completely. This can be due to a faulty window motor or a broken window regulator.
  • Solution: Repair or replacement of the window motor or regulator
  • Estimated Cost to Fix: $150 - $400+

Exterior

• Sunroof Issues
  • Description/Symptoms: The sunroof may leak, fail to open or close properly, or make excessive noise during operation.
  • Solution: Sunroof repairs can include cleaning and lubricating the tracks, replacing the motor, or replacing the entire sunroof assembly.
  • Estimated Cost to Fix: $100 - $500+

Interior

• Climate Control Issues
  • Description/Symptoms: The automatic climate control system may fail to maintain a consistent temperature or may blow hot air when cold air is desired, or vice versa.
  • Solution: Replacement of the actuator or blend door.
  • Estimated Cost to Fix: $200 - $600+
• Center Console Plastic Cracking
  • Description/Symptoms: The plastic surrounding the radio, climate controls, and shifter cracks and crumbles.
  • Solution: Replacement of the center console trim
  • Estimated Cost to Fix: $50 - $150+

Recalls

• Recalls: None Found

In summary, the 2001 Mazda Millenia can be a comfortable and stylish vehicle, but potential buyers should be aware of the common issues. The Miller Cycle engine, while unique, can be more prone to problems than the standard V6, leading to higher repair costs. Electrical and suspension issues are also prevalent. Overall, the severity of the issues ranges from minor inconveniences to major repairs, with costs ranging from a few hundred dollars to over a thousand for some engine and transmission-related fixes.