2017 BMW M140i

The 2017 BMW M140i is a popular hot hatchback known for its powerful engine, engaging driving dynamics, and relatively practical size. It packs a punch with its 3.0-liter turbocharged inline-six engine, producing 335 horsepower and 369 lb-ft of torque. Other engine options available, depending on the market, included various smaller displacement petrol and diesel engines, but the M140i designation specifically refers to the 3.0L I6. Transmission options include a 6-speed manual and an 8-speed automatic. People love the M140i for its performance and handling, but some common dislikes include the ride quality, which can be firm, and some interior plastics that feel a bit cheap.

Engine

B58 3.0L Turbocharged Inline-Six

• Oil Filter Housing Gasket Leak
  • Description/Symptoms: Oil leak from the oil filter housing, leading to a burning oil smell, visible oil drips, and low oil levels.
  • Solution: Replacement of the oil filter housing gasket.
  • Estimated Cost to Fix: $300 - $500+
  • Recalls: None Found
• Valve Cover Gasket Leak
  • Description/Symptoms: Oil leak from the valve cover, leading to a burning oil smell, visible oil drips, and low oil levels.
  • Solution: Replacement of the valve cover gasket.
  • Estimated Cost to Fix: $400 - $700+
  • Recalls: None Found
• Coolant Leaks (Water Pump/Thermostat Housing)
  • Description/Symptoms: Coolant leaks, leading to low coolant levels, overheating, and visible coolant drips. Often caused by the plastic construction becoming brittle with age and heat cycles.
  • Solution: Replacement of the water pump and/or thermostat housing.
  • Estimated Cost to Fix: $500 - $1200+
  • Recalls: None Found

Transmission

ZF 8HP 8-Speed Automatic Transmission

• Rough Shifting/Hesitation
  • Description/Symptoms: Harsh or jerky shifts, especially when cold. Hesitation when accelerating from a stop or during gear changes.
  • Solution: Transmission fluid flush and filter replacement. In more severe cases, valve body repair or replacement may be necessary.
  • Estimated Cost to Fix: $300-$2000+
  • Recalls: None Found

6-Speed Manual Transmission

• No Issues Found

Suspension

• Cracking/Worn Lower Control Arm Bushings
  • Description/Symptoms: Clunking noises from the front suspension, especially over bumps. Vague steering and poor handling.
  • Solution: Replacement of the lower control arm bushings, or the entire lower control arm.
  • Estimated Cost to Fix: $200 - $600+ per side
  • Recalls: None Found

Electrical

• Faulty Oxygen (O2) Sensors
  • Description/Symptoms: Check engine light illuminated, poor fuel economy, rough running engine.
  • Solution: Replacement of the faulty O2 sensor(s).
  • Estimated Cost to Fix: $200 - $400+ per sensor
  • Recalls: None Found

Exterior

• No Issues Found

Interior

• Rattling Trim
  • Description/Symptoms: Rattling noises from the dashboard, door panels, or other interior trim pieces, particularly on rough roads.
  • Solution: Securing loose trim pieces with clips or foam padding.
  • Estimated Cost to Fix: $50 - $300+
  • Recalls: None Found

Summary

The 2017 BMW M140i, while a thrilling car to drive, does have some common issues to be aware of. Engine oil leaks and coolant leaks are prevalent, potentially leading to costly repairs. Suspension issues, like worn bushings, can affect handling. The ZF 8-speed automatic transmission is robust, but it can experience rough shifting, which may require maintenance. Interior rattles, while not a major mechanical problem, can be annoying. Overall, potential buyers should inspect these areas and budget for potential maintenance and repairs to keep the car running smoothly.