2013 BMW 135i

The 2013 BMW 135i is a highly regarded compact performance car known for its engaging driving dynamics, powerful engine, and relatively small footprint. The 135i was offered with a turbocharged 3.0-liter inline-six engine, producing 300 horsepower and 300 lb-ft of torque. This engine was available with either a 6-speed manual or a 7-speed dual-clutch transmission (DCT). People love the 135i for its responsive handling, quick acceleration, and classic BMW styling. Some common complaints include a firm ride, especially on rough roads, and the cost of maintaining a performance-oriented BMW.

Engine

N55 3.0L Turbocharged Inline-Six

• Oil Filter Housing Gasket Leak
  • Description/Symptoms: Oil leaks from the oil filter housing, often dripping onto the exhaust manifold and causing a burning smell.
  • Solution: Replace the oil filter housing gasket.
  • Estimated Cost to Fix: $300 - $500
  • Recalls: None Found
• VANOS Solenoid Failure
  • Description/Symptoms: Engine hesitates, idles roughly, or throws a check engine light with codes related to VANOS (variable valve timing).
  • Solution: Replace the faulty VANOS solenoid(s).
  • Estimated Cost to Fix: $200 - $400 per solenoid
  • Recalls: None Found
• High Pressure Fuel Pump (HPFP) Failure
  • Description/Symptoms: Long crank times, misfires, stalling, and a check engine light.
  • Solution: Replace the high-pressure fuel pump.
  • Estimated Cost to Fix: $800 - $1200
  • Recalls: None Found
• Coolant Leaks
  • Description/Symptoms: Coolant leak under the car. Overheating due to not enough coolant.
  • Solution: Find and replace leaking component.
  • Estimated Cost to Fix: $100 - $500+
  • Recalls: None Found

Transmission

6-Speed Manual

• Clutch Failure
  • Description/Symptoms: Clutch slippage, difficulty shifting, or a complete failure of the clutch.
  • Solution: Replace the clutch disc, pressure plate, and throw-out bearing.
  • Estimated Cost to Fix: $1200 - $1800
  • Recalls: None Found

7-Speed DCT (Dual-Clutch Transmission)

• Mechatronic Unit Failure
  • Description/Symptoms: Harsh shifting, delayed engagement, or complete loss of gear selection. Can result in the transmission going into neutral.
  • Solution: Replace or repair the mechatronic unit.
  • Estimated Cost to Fix: $2000 - $4000
  • Recalls: None Found

Suspension

• Cracked Rear Subframe Mounts
  • Description/Symptoms: Clunking noise from the rear suspension, especially when going over bumps or accelerating hard.
  • Solution: Inspect for cracks and replace the rear subframe bushings or the entire subframe if necessary.
  • Estimated Cost to Fix: $500 - $1500
  • Recalls: None Found
• Control Arm Bushing Wear
  • Description/Symptoms: Vague steering feel, wandering on the road, and uneven tire wear.
  • Solution: Replace worn control arm bushings or the entire control arm assembly.
  • Estimated Cost to Fix: $300 - $800
  • Recalls: None Found

Electrical

• Battery Drain
  • Description/Symptoms: Battery drains quickly, especially when the car is not driven for several days. Can be due to a faulty module not going to sleep or a parasitic draw.
  • Solution: Diagnose the source of the drain and repair or replace the faulty component.
  • Estimated Cost to Fix: $100 - $500+
  • Recalls: None Found
• Faulty Window Regulators
  • Description/Symptoms: Window does not go up or down or is very slow to do so.
  • Solution: Replace the window regulator.
  • Estimated Cost to Fix: $250 - $500
  • Recalls: None Found

Exterior

• No Issues Found

Interior

• Sticking Door Locks
  • Description/Symptoms: Doors do not lock or unlock properly with the remote or the interior switch.
  • Solution: Replace the door lock actuator.
  • Estimated Cost to Fix: $200 - $400 per door
  • Recalls: None Found

Summary

The 2013 BMW 135i, while a performance-oriented and enjoyable car, does have its share of common issues. Engine-related problems, such as oil leaks and HPFP failures, can be relatively expensive to repair. Transmission issues, particularly with the DCT, can also be costly. Suspension problems, while not as frequent, can affect handling and require prompt attention. Overall, potential buyers should be aware of these issues and factor in maintenance costs when considering this model. Severity of issues range from moderate (oil leaks, suspension bushings) to severe (DCT failure, HPFP failure). The cost to repair can be minimal but can also become substantial, with some repairs exceeding $2000.