What is the 2006-2007 Mazda Mazdaspeed6 Takata Airbag Inflator Recalls (Driver and Passenger)?

Mazda/NHTSA recalls 17V474 and 18V402 cover driver and passenger frontal Takata inflators in 2006-2007 Mazdaspeed6 vehicles; recall 19V781 covers certain passenger inflators previously replaced with the same design. Degraded propellant can cause an inflator to rupture during depl… Severity: high.

What is the 2006-2007 Mazda Mazdaspeed6 Turbocharger Oil Starvation and Failure?

The Mazdaspeed6 shares the 2.3L DISI turbo engine with the Mazdaspeed3 and CX-7, inheriting the same turbo oil starvation issue. The turbo oil feed line's banjo bolt contains a small mesh screen that clogs with carbon deposits, restricting oil flow to the turbo bearing. The K04 t… Repairs typically run $600-$2,000. Severity: high.

What is the 2006-2007 Mazda Mazdaspeed6 Fuel Pump Mounting Ring Leak Recall?

Mazda recall 5121I / NHTSA 21V744 covers certain 2006-2007 Mazdaspeed6 vehicles. Improper installation of a fuel-pump mounting ring can lead to ring cracking and fuel leakage. Fuel odor or fuel beneath the vehicle may be warning signs, and leaked fuel near an ignition source incr… Severity: high.

What is the 2006-2007 Mazda Mazdaspeed6 VVT Actuator / Timing Chain Noise on Cold Start?

On cold start the L3T 2.3L DISI engine often emits a loud ticking, rattling or 'diesel-like' knocking noise from the variable valve timing (VVT) actuator. The actuator has a lock pin that sets cold-start timing; the pin is harder than the surrounding aluminum and wears an elongat… Repairs typically run $500-$1,200. Severity: high.

What is the 2006-2007 Mazda Mazdaspeed6 Weak Rear Differential Mount / Sheared Mount Bolts?

The all-wheel-drive Mazdaspeed6's rear differential front mount attaches with only two bolts into the diff housing and uses very soft bushings. Under hard launches and wheelhop the bolts back out over time and then shear when driveshaft torque loads the diff, which can also break… Repairs typically run $150-$800. Severity: high.

What is the 2006-2007 Mazda Mazdaspeed6 Turbocharger Oil Feed Line Leak and Turbo Failure?

The Mazdaspeed6 shares the K04 turbocharger and its associated problems with the Mazdaspeed3. The turbo oil feed line uses an O-ring gasket behind a crimp connection that sits directly against the turbo's hot side. The O-ring degrades from heat exposure, causing oil to leak onto… Repairs typically run $150-$2,000. Severity: medium.

What is the 2006-2007 Mazda Mazdaspeed6 Notchy Manual Transmission and Clutch Engagement Problems?

The 6-speed manual is frequently described as notchy and hard to shift, sometimes nearly impossible to get into gear, and the clutch is criticized for an on/off engagement feel. Early 2006 cars came with a stiffer clutch assembly that drew many complaints and warranty replacement… Severity: medium.

What is the 2006-2007 Mazda Mazdaspeed6 High-Pressure Fuel Pump (HPFP) Cannot Hold Pressure Under Load?

The mechanical HPFP is driven off an intake cam lobe and is famous for not maintaining the stock ~1600 psi rail pressure at high load, with pressure dropping under acceleration. Internal wear of the piston, sleeve and cam bucket, or a sticking spill valve / stuck pressure-relief… Severity: medium.

What is the 2006-2007 Mazda Mazdaspeed6 PCV System Failure Causing Oil Consumption and Smoking Turbo?

On the L3T DISI engine the PCV draws crankcase pressure from the engine block rather than the valve cover, and the valve and rubber hoses clog with crankcase contaminants. When they clog, crankcase pressure builds and blocks the turbocharger oil-return line, so pressurized oil ha… Repairs typically run $50-$400. Severity: medium.

What is the 2006-2007 Mazda Mazdaspeed6 Rear Differential and Transfer Case Fluid Neglect Damage?

The Mazdaspeed6's AWD system uses an electronically controlled active transfer case and rear differential that require specific fluid changes often neglected by owners and shops. The transfer case fluid degrades and causes the coupling to slip or judder during cornering. The rear… Repairs typically run $80-$2,000. Severity: medium.

What is the 2006-2007 Mazda Mazdaspeed6 Intake Valve Carbon Buildup (Direct Injection)?

Like all direct-injected engines, the Mazdaspeed6's MZR DISI engine sprays fuel directly into the cylinder, so no fuel washes over the back of the intake valves. Combined with oil vapor from the PCV and EGR, carbon accumulates heavily on the intake valves over time, eventually ch… Repairs typically run $200-$600. Severity: low.

Mazda · Known Issues

2006-2007 Mazda Mazdaspeed6 Problems & Issues

2006-2007 model years · 370+ owner reports · Updated September 2026

Share:@au7o.io

According to Au7o's analysis of 370+ owner reports, the 2006-2007 Mazda Mazdaspeed6 has 13 documented known issues, with 7 rated critical. The most serious are AWD Transfer Case Seal Failure and Internal Destruction ($300-$3,500 repair), Connecting Rod Failure Under Boost at Low RPM ($3,000-$7,000 repair), Takata Airbag Inflator Recalls (Driver and Passenger), Turbocharger Oil Starvation and Failure ($600-$2,000 repair), Fuel Pump Mounting Ring Leak Recall, VVT Actuator / Timing Chain Noise on Cold Start ($500-$1,200 repair) and Weak Rear Differential Mount / Sheared Mount Bolts ($150-$800 repair). The most commonly reported issue is AWD Transfer Case Seal Failure and Internal Destruction with 150 owner reports. Across all issues with published estimates, repair costs range from $50 to $7,000. DIY maintenance guides at au7o.io.

Frequently Asked Questions

What are the most common Mazda Mazdaspeed6 problems?

According to Au7o's analysis of 370+ owner reports, the 2006-2007 Mazda Mazdaspeed6 has 13 documented issues. The most frequently reported are: AWD Transfer Case Seal Failure and Internal Destruction, Connecting Rod Failure Under Boost at Low RPM, Takata Airbag Inflator Recalls (Driver and Passenger). Of these, 7 are rated critical and should be addressed promptly.

Is the Mazda Mazdaspeed6 reliable?

The 2006-2007 Mazda Mazdaspeed6 has 13 known issues documented across 370+ owner reports. 7 issues are rated critical: AWD Transfer Case Seal Failure and Internal Destruction and Connecting Rod Failure Under Boost at Low RPM and Takata Airbag Inflator Recalls (Driver and Passenger) and Turbocharger Oil Starvation and Failure and Fuel Pump Mounting Ring Leak Recall and VVT Actuator / Timing Chain Noise on Cold Start and Weak Rear Differential Mount / Sheared Mount Bolts. 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 Mazdaspeed6 problems?

Repair costs for known Mazda Mazdaspeed6 issues range from $50 to $7,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, AWD Transfer Case Seal Failure and Internal Destruction, typically costs $300-$3,500 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2006-2007 Mazda Mazdaspeed6 AWD Transfer Case Seal Failure and Internal Destruction?

The Mazdaspeed6's Volvo-sourced AWD transfer case suffers from chronic seal leaks that allow fluid to slowly seep out. If the seeping goes unnoticed, the transfer case runs dry and destroys itself internally, requiring a complete replacement. Mazda issued a recall for the transfe… Repairs typically run $300-$3,500. Severity: high.

All 13 Known Issues

Other Mazda Models

Frequently Asked Questions

What are the most common Mazda Mazdaspeed6 problems?

Is the Mazda Mazdaspeed6 reliable?

How much does it cost to fix common Mazda Mazdaspeed6 problems?

What is the 2006-2007 Mazda Mazdaspeed6 AWD Transfer Case Seal Failure and Internal Destruction?

What is the 2006-2007 Mazda Mazdaspeed6 Connecting Rod Failure Under Boost at Low RPM?

When Issues Typically Appear

Connecting Rod Failure Under Boost at Low RPM#

Turbocharger Oil Starvation and Failure#

VVT Actuator / Timing Chain Noise on Cold Start#

Turbocharger Oil Feed Line Leak and Turbo Failure#

PCV System Failure Causing Oil Consumption and Smoking Turbo#

Intake Valve Carbon Buildup (Direct Injection)#

AWD Transfer Case Seal Failure and Internal Destruction#

Weak Rear Differential Mount / Sheared Mount Bolts#

Rear Differential and Transfer Case Fluid Neglect Damage#

Fuel Pump Mounting Ring Leak Recall#

High-Pressure Fuel Pump (HPFP) Cannot Hold Pressure Under Load#

Takata Airbag Inflator Recalls (Driver and Passenger)#

Notchy Manual Transmission and Clutch Engagement Problems#