2007 Mazda B4000

The 2007 Mazda B4000 is a compact pickup truck that is mechanically identical to the Ford Ranger of the same era. It offers a practical and affordable option for light-duty hauling and utility. While appreciated for its simplicity, reliability (relative to newer trucks), and compact size, it is often criticized for its outdated design, fuel economy, and lack of modern features. The 2007 Mazda B4000 came with two engine options: a 2.3L I4 engine producing 143 horsepower and 154 lb-ft of torque, and the more common 4.0L Cologne V6 engine which produces 207 horsepower and 238 lb-ft of torque. Transmission options included a 5-speed manual and a 5-speed automatic, depending on the engine.

Engine

4.0L Cologne V6

• Timing Chain Rattle/Failure
  • Description/Symptoms: Rattling noise, especially on startup or when idling. Can eventually lead to complete engine failure. Usually occurs at higher mileage.
  • Solution: Replace the timing chain components (chains, guides, tensioners).
  • Estimated Cost to Fix: $1,000 - $2,000+
  • Recalls: None Found
• Thermostat Housing Leak
  • Description/Symptoms: Coolant leak around the thermostat housing, often manifesting as a puddle of coolant under the vehicle after it sits. Can lead to overheating if not addressed.
  • Solution: Replace the thermostat housing and gasket.
  • Estimated Cost to Fix: $100 - $300
  • Recalls: None Found

2.3L Duratec I4

• No Issues Found

Transmission

5-Speed Automatic (5R55E)

• Transmission Failure
  • Description/Symptoms: Delayed or harsh shifting, slipping between gears, or complete loss of drive. Can result from internal wear or failure of solenoids or valve body.
  • Solution: Rebuild or replace the transmission. In some cases, repairing the valve body or replacing solenoids may be sufficient.
  • Estimated Cost to Fix: $2,000 - $4,000+
  • Recalls: None Found

Suspension

• Leaf Spring Sagging/Breakage
  • Description/Symptoms: Rear of the truck sitting lower than normal, rough ride, or visible cracking/breaking of the leaf springs.
  • Solution: Replace the leaf springs.
  • Estimated Cost to Fix: $300 - $800+ (per side, depending on spring type and labor)
  • Recalls: None Found
• Ball Joint Failure
  • Description/Symptoms: Clunking noises from the front suspension, loose steering, uneven tire wear. Can lead to loss of control if the ball joint completely separates.
  • Solution: Replace the ball joints.
  • Estimated Cost to Fix: $200 - $600 (per side, depending on labor and part quality)
  • Recalls: None Found

Electrical

• Blend Door Actuator Failure
  • Description/Symptoms: Inability to control the temperature or direction of airflow from the vents. Often accompanied by a clicking noise behind the dashboard.
  • Solution: Replace the blend door actuator.
  • Estimated Cost to Fix: $150 - $400+ (depending on location and labor)
  • Recalls: None Found
• Door Ajar Sensor Issues
  • Description/Symptoms: The “door ajar” light staying on even when the doors are closed, potentially draining the battery.
  • Solution: Clean or replace the door ajar sensor in the affected door.
  • Estimated Cost to Fix: $50 - $200+ (depending on labor)
  • Recalls: None Found

Exterior

• Rust (Especially Around Wheel Wells and Rocker Panels)
  • Description/Symptoms: Visible rust forming on the body panels, particularly in areas prone to moisture and road salt exposure.
  • Solution: Repair or replace rusted panels. Preventative measures like rustproofing can help mitigate future issues.
  • Estimated Cost to Fix: Highly variable, depending on the extent of the rust.
  • Recalls: None Found

Interior

• Cracked Dashboard
  • Description/Symptoms: Cracking across the dash.
  • Solution: Repair or replace the dash
  • Estimated Cost to Fix: $100 - $1000+
  • Recalls: None Found

Summary

The 2007 Mazda B4000, like its Ford Ranger counterpart, is a generally reliable vehicle, but owners should be aware of potential issues related to the timing chain (particularly on the 4.0L V6), suspension components (leaf springs and ball joints), and electrical components (blend door actuator and door ajar sensors). Rust is also a significant concern, especially in areas with road salt. The severity of these issues can range from minor inconveniences to major repairs, with costs varying accordingly. Regular maintenance and inspections can help prevent or mitigate these problems.