2004 Mercedes-Benz G500

The 2004 Mercedes-Benz G500 is a rugged and luxurious SUV known for its off-road capabilities and distinctive boxy design. The 2004 G500 features a 5.0-liter V8 engine producing 292 horsepower and 336 lb-ft of torque, paired with a 5-speed automatic transmission. While praised for its iconic styling, robust construction, and go-anywhere attitude, owners often cite its high running costs, relatively poor fuel economy, and some specific mechanical and electrical issues as downsides.

Engine

5.0L V8

• Oil Leaks
  • Description/Symptoms: Oil leaks from various locations on the engine, including valve cover gaskets, oil pan gasket, and rear main seal. Burning oil smell may be present.
  • Solution: Replace leaking gaskets and seals.
  • Estimated Cost to Fix: $200 - $1000+, depending on the location and severity of the leak.
  • Recalls: None Found
• Failed Mass Air Flow Sensor (MAF)
  • Description/Symptoms: Engine runs rough, poor fuel economy, check engine light illuminated. Common codes P0170, P0173, P0101.
  • Solution: Replace the MAF sensor.
  • Estimated Cost to Fix: $200 - $500
  • Recalls: None Found
• Faulty Oxygen Sensors
  • Description/Symptoms: Poor fuel economy, rough idling, and a check engine light. Often caused by sensor contamination or age.
  • Solution: Replace the affected oxygen sensor(s).
  • Estimated Cost to Fix: $200 - $500+ (depending on the number of sensors)
  • Recalls: None Found

Transmission

5-Speed Automatic Transmission

• Transmission Slipping
  • Description/Symptoms: Transmission slips between gears, delayed engagement, or harsh shifting.
  • Solution: In some cases, a fluid change and filter replacement may help. However, in more severe cases, a transmission rebuild or replacement is necessary.
  • Estimated Cost to Fix: $300 (fluid change) - $4000+ (rebuild or replacement)
  • Recalls: None Found
• Torque Converter Issues
  • Description/Symptoms: Shuddering or vibration at low speeds, particularly during acceleration.
  • Solution: Torque converter replacement.
  • Estimated Cost to Fix: $1000 - $2000
  • Recalls: None Found

Suspension

• Worn Ball Joints
  • Description/Symptoms: Clunking noises from the front suspension, particularly when going over bumps. Steering may feel loose.
  • Solution: Replace worn ball joints.
  • Estimated Cost to Fix: $400 - $1000 per side
  • Recalls: None Found
• Failed Shock Absorbers
  • Description/Symptoms: Bouncy or unstable ride, excessive body roll, and poor handling.
  • Solution: Replace the shock absorbers.
  • Estimated Cost to Fix: $400 - $1200+ (depending on brand and labor)
  • Recalls: None Found

Electrical

• Faulty Window Regulators
  • Description/Symptoms: Windows that operate erratically, or fail to operate at all.
  • Solution: Replace the window regulator.
  • Estimated Cost to Fix: $300 - $600 per window
  • Recalls: None Found
• Corrosion of Electrical Connectors
  • Description/Symptoms: Intermittent electrical issues, such as lights flickering, sensors malfunctioning, or difficulty starting.
  • Solution: Clean and repair corroded connectors.
  • Estimated Cost to Fix: $100 - $500+ (depending on severity and location)
  • Recalls: None Found
• Fuse Box Issues
  • Description/Symptoms: Electrical components not working. Can be caused by corrosion or water intrusion.
  • Solution: Repair or replacement of fuse box.
  • Estimated Cost to Fix: $200 - $800
  • Recalls: None Found

Exterior

• Rust
  • Description/Symptoms: Rust forming in wheel wells, door panels, around headlights, and taillights.
  • Solution: Repair and repaint affected areas, or replace body panels.
  • Estimated Cost to Fix: $300 - $5000+ (depending on the severity)
  • Recalls: None Found

Interior

• Sunroof Problems
  • Description/Symptoms: Sunroof malfunctioning, sticking, or failing to close properly.
  • Solution: Repair or replace the sunroof motor, tracks, or seals.
  • Estimated Cost to Fix: $300 - $1000
  • Recalls: None Found

Summary

The 2004 Mercedes-Benz G500, while iconic, is prone to some common issues, particularly related to engine oil leaks, transmission performance, and electrical components. Suspension wear and rust are also concerns to consider. Repair costs can range from relatively minor to quite substantial, with transmission and rust repairs potentially being the most expensive. Prospective buyers should carefully inspect any potential purchase and be prepared for ongoing maintenance costs.