2016 BMW M135i

Introduction:

The 2016 BMW M135i is a high-performance compact hatchback powered by a B58 3.0-liter TwinPower Turbo inline-6 engine that produces 320 horsepower and 332 lb-ft of torque. It comes standard with a 6-speed manual transmission or optional 8-speed automatic transmission. The M135i is known for its impressive acceleration and handling, but has also been reported to have some reliability issues.

Engine:

• B58 3.0L TwinPower Turbo I6

  • Carbon Buildup on Intake Valves:
    • Description/Symptoms: Reduced engine performance, hesitation or stumbling during acceleration, rough idle.
    • Solution: Intake valve cleaning or walnut blasting.
    • Estimated Cost to Fix: $500 - $1,000+
  • Timing Chain Tensioner Failure:
    • Description/Symptoms: Engine rattling or knocking noise, loss of power.
    • Solution: Replacement of timing chain tensioner and related components.
    • Estimated Cost to Fix: $2,000 - $3,000+

Transmission:

• 6-Speed Manual Transmission

  • No Issues Found

• 8-Speed Automatic Transmission

  • Mechatronic Unit Failure:
    • Description/Symptoms: Transmission slipping, harsh shifting, loss of gears.
    • Solution: Replacement of mechatronic unit.
    • Estimated Cost to Fix: $2,500 - $4,000+
    • Recalls: N/A

Suspension:

• No Issues Found

Electrical:

• Infotainment System Malfunction:
  • Description/Symptoms: Screen freezing, touchscreen unresponsive, software glitches.
  • Solution: Software updates or replacement of infotainment system.
  • Estimated Cost to Fix: $500 - $1,500+
• Battery Drain:
  • Description/Symptoms: Battery drains prematurely, difficulty starting the vehicle.
  • Solution: Diagnosis and repair of electrical components causing the drain.
  • Estimated Cost to Fix: $100 - $500+

Exterior:

• No Issues Found

Interior:

• Panoramic Moonroof Rattling:
  • Description/Symptoms: Rattling noise coming from the panoramic sunroof when driving over bumps or uneven surfaces.
  • Solution: Tightening or replacement of sunroof components.
  • Estimated Cost to Fix: $200 - $500+

Summary:

The 2016 BMW M135i is a high-performance vehicle that has been praised for its impressive driving dynamics. However, there have been some reported reliability issues, particularly with the engine and transmission. While the severity of these issues varies, they can be costly to repair. If considering a used M135i, it is advisable to have it inspected thoroughly and be aware of potential repair expenses.