2021 BMW 120i

The 2021 BMW 120i is a premium compact hatchback offering a blend of sporty handling and luxurious features. In addition to the 120i, engine options in the 1 Series range include the 118i, 128ti, and the M135i xDrive. The 120i features a 2.0-liter turbocharged four-cylinder engine producing around 178 horsepower and 207 lb-ft of torque. Typically, this engine is paired with an 8-speed automatic transmission, although some markets may have offered a manual option. Drivers generally appreciate the 120i for its responsive handling, well-appointed interior, and efficient engine. Criticisms often revolve around the higher price point compared to competitors, limited rear passenger space, and some of the features only being available as optional extras.

Engine

2.0-Liter Turbocharged Four-Cylinder (B48)

• Excessive Oil Consumption
  • Description/Symptoms: Owners have reported experiencing higher than expected oil consumption, requiring frequent top-ups between scheduled service intervals. This may be indicated by the low oil warning light illuminating on the dashboard.
  • Solution: The fix usually involves a detailed inspection to rule out any leaks. BMW may perform an oil consumption test, and if excessive consumption is confirmed, piston ring replacement or even engine replacement may be required.
  • Estimated Cost to Fix: $2,000 - $8,000+ depending on the extent of the repair
  • Recalls: None Found

Transmission

8-Speed Automatic (Aisin)

• Rough Shifting/Hesitation
  • Description/Symptoms: Some owners have reported instances of rough or jerky shifting, especially during low-speed maneuvers or when shifting between certain gears. Hesitation during acceleration is also reported.
  • Solution: A software update to the transmission control module (TCM) can sometimes resolve the issue. In other cases, a transmission flush or replacement of the valve body may be necessary.
  • Estimated Cost to Fix: $200 (software update) - $2,500+ (valve body or transmission replacement)
  • Recalls: None Found

Suspension

• Premature Wear of Suspension Components
  • Description/Symptoms: Some owners have reported experiencing issues with prematurely worn suspension components, such as bushings and struts. Symptoms include clunking noises when driving over bumps, reduced ride comfort, and diminished handling.
  • Solution: Replacement of the worn suspension components. A thorough inspection should be conducted to identify all affected parts.
  • Estimated Cost to Fix: $500 - $1500+ depending on the parts requiring replacement
  • Recalls: None Found

Electrical

• Infotainment System Glitches
  • Description/Symptoms: Owners have reported issues with the infotainment system, including freezing, lagging, and unexpected reboots. Connectivity problems with Apple CarPlay or Android Auto are also mentioned.
  • Solution: A software update may resolve some of these issues. If the problem persists, the infotainment unit itself may need to be replaced.
  • Estimated Cost to Fix: $0 (software update) - $1,500+ (unit replacement)
  • Recalls: None Found
• Battery Drain
  • Description/Symptoms: Some owners have reported issues with the vehicle battery draining prematurely, especially if the car is left unused for an extended period. This can lead to difficulty starting the engine.
  • Solution: Checking for parasitic draws is the first step. Software updates can sometimes resolve the issue. If the battery is faulty, it will need to be replaced.
  • Estimated Cost to Fix: $200 - $400+ for battery replacement; diagnostic costs may vary.
  • Recalls: None Found

Exterior

No Issues Found

Interior

• Rattling Noises
  • Description/Symptoms: Some owners have reported rattling noises emanating from the dashboard or door panels, especially when driving on uneven surfaces.
  • Solution: The source of the rattling needs to be identified and secured. This may involve tightening loose screws, adding padding, or replacing damaged clips.
  • Estimated Cost to Fix: $50 - $300+ depending on the complexity.
  • Recalls: None Found

Summary

The 2021 BMW 120i generally presents with issues that are consistent with other modern luxury vehicles, particularly focusing on electrical gremlins and higher costs of ownership. Engine oil consumption and transmission shifting concerns can be costly if more extensive repairs are required. The severity of these issues varies, but potential buyers should be aware of these common complaints and factor them into their purchasing decision, budgeting for potential maintenance and repairs.