2003 BMW 745i

2003 BMW 745i

The 2003 BMW 745i is a luxury sedan powered by a 4.4-liter V8 engine, producing 325 horsepower and 330 lb-ft of torque. It comes standard with a six-speed automatic transmission. Other engine options include a 3.6-liter V8 and a 4.8-liter V8, while transmission options include a five-speed automatic and a six-speed manual.

The 745i is praised for its comfortable ride, spacious cabin, and powerful engine. However, it has received criticism for its high repair costs and reliability issues.

Engine

• 4.4-liter V8
  • Timing Chain Problems: The timing chain may stretch or break, causing the engine to lose power or stall.
    • Solution: Replace the timing chain and tensioners.
    • Estimated Cost to Fix: $1,500 - $3,000+
    • Recalls: None Found
  • Valvetronic System Failure: The Valvetronic system, which controls the valve lift, may malfunction, causing reduced engine performance or stalling.
    • Solution: Replace the Valvetronic motor or control unit.
    • Estimated Cost to Fix: $1,000 - $2,000
    • Recalls: None Found
• 3.6-liter V8
  • No Major Issues Found
• 4.8-liter V8
  • Oil Leaks: The oil filter housing gasket may leak, resulting in reduced oil pressure and potential engine damage.
    • Solution: Replace the oil filter housing gasket.
    • Estimated Cost to Fix: $200 - $400
    • Recalls: None Found

Transmission

• Six-Speed Automatic
  • Slipping Gears: The transmission may slip out of gear, especially when shifting between low and high gears.
    • Solution: Rebuild or replace the transmission.
    • Estimated Cost to Fix: $3,000 - $5,000+
    • Recalls: None Found
• Five-Speed Automatic
  • No Major Issues Found
• Six-Speed Manual
  • Clutch Problems: The clutch may slip or chatter, making it difficult to shift gears.
    • Solution: Replace the clutch and flywheel.
    • Estimated Cost to Fix: $1,000 - $2,000
    • Recalls: None Found

Suspension

• Air Suspension Failure: The air suspension system may fail, causing the vehicle to drop or lean to one side.
  • Solution: Replace the air suspension struts or compressor.
  • Estimated Cost to Fix: $2,000 - $4,000+
  • Recalls: None Found

Electrical

• Alternator Problems: The alternator may fail, leading to battery drain and electrical system failure.
  • Solution: Replace the alternator.
  • Estimated Cost to Fix: $500 - $1,000
  • Recalls: None Found
• Xenon Headlight Failure: The xenon headlights may malfunction or fail completely.
  • Solution: Replace the xenon bulbs or ballasts.
  • Estimated Cost to Fix: $500 - $1,500
  • Recalls: None Found

Exterior

• No Major Issues Found

Interior

• Navigation System Malfunction: The navigation system may freeze, crash, or display incorrect information.
  • Solution: Update the navigation software or replace the navigation unit.
  • Estimated Cost to Fix: $500 - $1,500
  • Recalls: None Found
• Dashboard Pixel Failure: The pixels on the dashboard display may fail, causing the display to be unreadable.
  • Solution: Replace the dashboard display.
  • Estimated Cost to Fix: $500 - $1,000
  • Recalls: None Found

Summary

The 2003 BMW 745i is a luxurious and powerful vehicle but has a history of reliability issues, especially with its timing chain, transmission, and air suspension system. The cost of repairs can be high, making it important to factor in maintenance and repair expenses when considering ownership.