What is the 2000-2007 Mazda MPV Power Sliding Door Malfunction?

Power sliding door motor, cable, or latch mechanism fails. Door may not open, not close completely, or reverse direction randomly. Repairs typically run $200-$700. Severity: medium.

What is the 1990-2006 Mazda MPV Alternator Premature Failure?

Alternator fails prematurely due to heat exposure from exhaust proximity. Battery drains and warning lights come on. Can strand vehicle if battery goes flat. Repairs typically run $250-$600. Severity: medium.

What is the 2000-2006 Mazda MPV Rear Coil Spring Corrosion and Fracture?

The MPV's rear coil springs corrode and fracture in rust-belt states, typically breaking at the bottom coil. A broken spring causes the rear of the vehicle to sag on one side and can puncture a tire if the broken end shifts. The springs lose their protective coating from road sal… Repairs typically run $200-$500. Severity: medium.

What is the 2002-2006 Mazda MPV Timing Chain Cover and Valve Cover Gasket Oil Leaks on the 3.0L AJ-DE V6?

The 3.0L AJ-DE V6 used in 2002-2006 MPVs (Mazda's version of the Ford Duratec 30) develops chronic external oil leaks as the RTV and gaskets age. The two dominant sources are the timing chain cover, where the sealant between the cover, block and heads gives up, and the valve cove… Repairs typically run $200-$1,400. Severity: medium.

What is the 2000-2006 Mazda MPV Pre-Catalyst Failure Sets P0420/P0421 and Can Ingest Substrate Into the Engine?

Second-generation MPVs carry three catalytic converters: a main converter plus two close-coupled 'pre-cats' bolted right at the exhaust manifolds, one on the radiator side and one on the firewall side. Sitting that close to the ports, the pre-cat substrates run extremely hot and… Repairs typically run $500-$1,800. Severity: medium.

Mazda · Known Issues

2003 Mazda MPV Problems: 10 Known Issues

2003 model year · 480+ owner reports · Updated August 2026

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According to Au7o's analysis of 480+ owner reports, the 2003 Mazda MPV has 10 documented known issues, with 5 rated critical. The most serious are Automatic Transmission Shudder and Failure ($300-$3,000 repair), Automatic Transmission Slipping and Harsh Shifting ($200-$3,500 repair), Front Fog Lamp Socket Separates Inside the Bumper and Can Start a Fire (Recalls 03V053, 03V206) ($0-$0 repair), Rear Heater Coolant Pipes Rust Through and Dump Coolant (Underbody Steel Lines) ($500-$1,200 repair) and Cooling Fan Control Module Fails, Fans Run Constantly or Not at All (Overheating) ($250-$600 repair). The most commonly reported issue is Automatic Transmission Shudder and Failure with 180 owner reports. Across all issues with published estimates, repair costs range from $200 to $3,500. DIY maintenance guides at au7o.io.

Frequently Asked Questions

What are the most common Mazda MPV problems?

According to Au7o's analysis of 480+ owner reports, the 2003 Mazda MPV has 10 documented issues. The most frequently reported are: Automatic Transmission Shudder and Failure, Automatic Transmission Slipping and Harsh Shifting, Front Fog Lamp Socket Separates Inside the Bumper and Can Start a Fire (Recalls 03V053, 03V206). Of these, 5 are rated critical and should be addressed promptly.

Is the Mazda MPV reliable?

The 2003 Mazda MPV has 10 known issues documented across 480+ owner reports. 5 issues are rated critical: Automatic Transmission Shudder and Failure and Automatic Transmission Slipping and Harsh Shifting and Front Fog Lamp Socket Separates Inside the Bumper and Can Start a Fire (Recalls 03V053, 03V206) and Rear Heater Coolant Pipes Rust Through and Dump Coolant (Underbody Steel Lines) and Cooling Fan Control Module Fails, Fans Run Constantly or Not at All (Overheating). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Mazda MPV problems?

Repair costs for known Mazda MPV issues range from $0 to $3,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Automatic Transmission Shudder and Failure, typically costs $300-$3,000 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2000-2007 Mazda MPV Automatic Transmission Shudder and Failure?

Automatic transmission develops torque converter shudder and eventual internal failure. Shifts become harsh and delayed. Common on 2000+ models with the 5-speed auto. Repairs typically run $300-$3,000. Severity: high.

What is the 2000-2006 Mazda MPV Automatic Transmission Slipping and Harsh Shifting?

The second-generation MPV's 5-speed automatic transmission (shared with Ford) develops slipping, harsh shifts, and delayed engagement between 80,000-120,000 miles. The torque converter lock-up clutch wears, and the valve body solenoids stick. The transmission fluid often shows si… Repairs typically run $200-$3,500. Severity: high.

All 10 Known Issues

Other Mazda Models

Frequently Asked Questions

What are the most common Mazda MPV problems?

Is the Mazda MPV reliable?

How much does it cost to fix common Mazda MPV problems?

What is the 2000-2007 Mazda MPV Automatic Transmission Shudder and Failure?

What is the 2000-2006 Mazda MPV Automatic Transmission Slipping and Harsh Shifting?

2000-2007 Mazda MPV: Automatic Transmission Shudder and Failure#

2000-2006 Mazda MPV: Automatic Transmission Slipping and Harsh Shifting#

2000-2006 Mazda MPV: Rear Heater Coolant Pipes Rust Through and Dump Coolant (Underbody Steel Lines)#

2002-2006 Mazda MPV: Cooling Fan Control Module Fails, Fans Run Constantly or Not at All (Overheating)#

2001-2003 Mazda MPV: Front Fog Lamp Socket Separates Inside the Bumper and Can Start a Fire (Recalls 03V053, 03V206)#

2000-2007 Mazda MPV: Power Sliding Door Malfunction#

1990-2006 Mazda MPV: Alternator Premature Failure#

2000-2006 Mazda MPV: Rear Coil Spring Corrosion and Fracture#

2002-2006 Mazda MPV: Timing Chain Cover and Valve Cover Gasket Oil Leaks on the 3.0L AJ-DE V6#

2000-2006 Mazda MPV: Pre-Catalyst Failure Sets P0420/P0421 and Can Ingest Substrate Into the Engine#

What is the 2001-2003 Mazda MPV Front Fog Lamp Socket Separates Inside the Bumper and Can Start a Fire (Recalls 03V053, 03V206)?

What is the 2000-2006 Mazda MPV Rear Heater Coolant Pipes Rust Through and Dump Coolant (Underbody Steel Lines)?

What is the 2002-2006 Mazda MPV Cooling Fan Control Module Fails, Fans Run Constantly or Not at All (Overheating)?

What is the 2000-2007 Mazda MPV Power Sliding Door Malfunction?

What is the 1990-2006 Mazda MPV Alternator Premature Failure?

What is the 2000-2006 Mazda MPV Rear Coil Spring Corrosion and Fracture?

What is the 2002-2006 Mazda MPV Timing Chain Cover and Valve Cover Gasket Oil Leaks on the 3.0L AJ-DE V6?

What is the 2000-2006 Mazda MPV Pre-Catalyst Failure Sets P0420/P0421 and Can Ingest Substrate Into the Engine?