2017 BMW 740i

Here’s a breakdown of common issues and complaints for the 2017 BMW 740i, categorized by major component and engine/transmission options. This information aims to provide a comprehensive overview for potential buyers.

The 2017 BMW 740i represents the sixth generation of the 7 Series, offering a luxurious and technologically advanced driving experience. The standard engine is a 3.0-liter turbocharged inline-6 producing 320 horsepower and 330 lb-ft of torque. Other engine options include a 4.4-liter twin-turbocharged V8 and a plug-in hybrid powertrain. All engine options are paired with an 8-speed automatic transmission. People generally appreciate the 740i for its comfortable ride, spacious interior, advanced technology features, and powerful yet smooth engine. Some common complaints include the complexity of the iDrive system, potential for expensive repairs, and the somewhat detached driving experience compared to sportier BMW models.

Engine

3.0L Turbocharged Inline-6 (B58)

• Oil Leaks
  • Description/Symptoms: Oil leaks from the valve cover gasket or the oil filter housing gasket. Symptoms include visible oil leaks on the engine, oil puddles under the car, and a burning oil smell.
  • Solution: Replacing the valve cover gasket or the oil filter housing gasket.
  • Estimated Cost to Fix: $300 - $800+ depending on the location and labor rates.
  • Recalls: None Found
• Coolant Leaks
  • Description/Symptoms: Coolant leaks from the thermostat housing or the water pump. Symptoms include low coolant levels, overheating, and visible coolant leaks.
  • Solution: Replacing the thermostat housing or the water pump.
  • Estimated Cost to Fix: $400 - $1000+ depending on the location and labor rates.
  • Recalls: None Found

Transmission

8-Speed Automatic (8HP)

• Rough Shifting/Hesitation
  • Description/Symptoms: The ZF 8HP transmission can sometimes exhibit rough shifting, hesitation, or delayed engagement. This may be more noticeable at lower speeds.
  • Solution: A transmission fluid flush and software update may resolve the issue. In more severe cases, valve body replacement or transmission rebuild/replacement may be necessary.
  • Estimated Cost to Fix: $300 (fluid flush and software) to $3,000+ (valve body or rebuild).
  • Recalls: None Found
• Mechatronic Sleeve Leak
  • Description/Symptoms: A leak at the mechatronic sleeve, which seals the electrical connector to the transmission. This can cause transmission issues due to loss of fluid pressure.
  • Solution: Replacing the mechatronic sleeve and refilling the transmission fluid.
  • Estimated Cost to Fix: $500 - $1000
  • Recalls: None Found

Suspension

• Air Suspension Issues
  • Description/Symptoms: The air suspension system can experience issues such as compressor failure, leaking air struts, or height sensor malfunction. Symptoms include the car sitting unevenly, the suspension not adjusting properly, and error messages on the dashboard.
  • Solution: Replacing the faulty air strut, compressor, or height sensor.
  • Estimated Cost to Fix: $800 - $2000+ per strut, $500 - $1500+ for the compressor.
  • Recalls: None Found

Electrical

• iDrive System Glitches
  • Description/Symptoms: The iDrive infotainment system can experience glitches, freezing, or unresponsiveness.
  • Solution: A software update may resolve the issue. In some cases, the iDrive controller or head unit may need to be replaced.
  • Estimated Cost to Fix: $0 (software update) to $1000+ (controller/head unit replacement).
  • Recalls: None Found
• Battery Drain
  • Description/Symptoms: Excessive battery drain can lead to starting problems and require frequent jump-starts.
  • Solution: Identify and address the source of the parasitic drain, which could be a faulty module or accessory. Replacing the battery may also be necessary.
  • Estimated Cost to Fix: $200 - $500+ (battery replacement), $100+ (diagnostics and repair of parasitic drain).
  • Recalls: None Found

Exterior

• Door Handle Issues
  • Description/Symptoms: The door handles sometimes fail to operate correctly. They can stick, become unresponsive, or fail to present automatically.
  • Solution: Replacing the faulty door handle mechanism.
  • Estimated Cost to Fix: $500 - $1000+ per handle.
  • Recalls: None Found

Interior

• Seat Motor Malfunctions
  • Description/Symptoms: The electric seat motors can fail, preventing the seat from adjusting properly.
  • Solution: Replacing the faulty seat motor or the entire seat assembly.
  • Estimated Cost to Fix: $300 - $1000+ depending on the motor and labor.
  • Recalls: None Found

Summary

The 2017 BMW 740i offers a luxurious and technologically advanced driving experience, but potential buyers should be aware of the common issues that can arise. Engine oil and coolant leaks, transmission quirks, air suspension problems, and electrical glitches are among the most frequently reported complaints. While some issues can be resolved with relatively inexpensive fixes like fluid flushes or software updates, others may require more costly repairs such as component replacements. Being aware of these potential problems can help buyers make an informed decision and budget for potential maintenance costs.