2007 BMW 550i

2007 BMW 550i

The 2007 BMW 550i is a high-performance luxury sedan that is powered by a 4.8-liter V8 engine producing 360 horsepower and 360 lb-ft of torque. It comes standard with a six-speed automatic transmission. Other engine options include a 3.0-liter inline-six engine and a 4.4-liter V8 engine. Transmission options include a six-speed manual transmission and a seven-speed dual-clutch transmission.

The 550i is a popular choice for drivers who want a powerful and luxurious sedan. It is praised for its smooth ride, responsive handling, and comfortable interior. However, it can be expensive to maintain, and some owners have reported experiencing problems with the engine, transmission, and other components.

Engine

4.8-liter V8 Engine

• VANOS system failure
  • Description/Symptoms: The VANOS system is responsible for controlling the timing of the engine’s valves. If it fails, the engine may lose power, idle roughly, or stall.
  • Solution: Replace the VANOS system.
  • Estimated Cost to Fix: $1,500 - $2,500+
  • Recalls: None Found
• Valve stem seal failure
  • Description/Symptoms: The valve stem seals prevent oil from leaking into the engine’s cylinders. If they fail, the engine may burn oil and produce blue smoke.
  • Solution: Replace the valve stem seals.
  • Estimated Cost to Fix: $1,000 - $1,500+
  • Recalls: None Found
• Oil filter housing gasket leak
  • Description/Symptoms: The oil filter housing gasket is a rubber seal that prevents oil from leaking out of the engine. If it fails, the engine may leak oil.
  • Solution: Replace the oil filter housing gasket.
  • Estimated Cost to Fix: $100 - $200+
  • Recalls: None Found

3.0-liter Inline-Six Engine

• Water pump failure
  • Description/Symptoms: The water pump circulates coolant through the engine to keep it cool. If it fails, the engine may overheat.
  • Solution: Replace the water pump.
  • Estimated Cost to Fix: $500 - $1,000+
  • Recalls: None Found

4.4-liter V8 Engine

• Timing chain failure
  • Description/Symptoms: The timing chain synchronizes the movement of the engine’s valves and pistons. If it fails, the engine may catastrophically fail.
  • Solution: Replace the timing chain.
  • Estimated Cost to Fix: $2,000 - $3,000+
  • Recalls: None Found

Transmission

Six-Speed Automatic Transmission

• Torque converter failure
  • Description/Symptoms: The torque converter is a fluid-filled device that transfers power from the engine to the transmission. If it fails, the transmission may slip or shudder.
  • Solution: Replace the torque converter.
  • Estimated Cost to Fix: $1,500 - $2,500+
  • Recalls: None Found

Seven-Speed Dual-Clutch Transmission

• Mechatronic unit failure
  • Description/Symptoms: The mechatronic unit is an electronic control unit that controls the transmission’s shifting. If it fails, the transmission may shift erratically or not shift at all.
  • Solution: Replace the mechatronic unit.
  • Estimated Cost to Fix: $2,000 - $3,000+
  • Recalls: None Found

Suspension

• Front control arm bushings wear
  • Description/Symptoms: The front control arm bushings are rubber mounts that connect the control arms to the frame. If they wear out, the suspension may feel loose or wobbly.
  • Solution: Replace the front control arm bushings.
  • Estimated Cost to Fix: $500 - $1,000+
  • Recalls: None Found

Electrical

• Battery drain
  • Description/Symptoms: The battery may drain quickly, even when the car is not being used.
  • Solution: Find and fix the source of the drain.
  • Estimated Cost to Fix: $100 - $500+
  • Recalls: None Found

Exterior

• Headlight condensation
  • Description/Symptoms: Condensation may form inside the headlights.
  • Solution: Replace the headlights.
  • Estimated Cost to Fix: $500 - $1,000+
  • Recalls: None Found

Interior

• Navigation system failure
  • Description/Symptoms: The navigation system may not work properly or may freeze.
  • Solution: Update the navigation system software or replace the navigation system.
  • Estimated Cost to Fix: $500 - $1,500+
  • Recalls: None Found

Summary

The 2007 BMW 550i is a powerful and luxurious sedan that is known for its smooth ride, responsive handling, and comfortable interior. However, it can be expensive to maintain, and some owners have reported experiencing problems with the engine, transmission, and other components. The severity and cost of these issues can vary depending on the specific problem.