2011 BMW 135i

The 2011 BMW 135i is a popular sports coupe/convertible known for its engaging driving dynamics and potent inline-six engine. The 2011 135i came with the N55 3.0L turbocharged inline-six engine producing 300 horsepower and 300 lb-ft of torque. Transmission options included a 6-speed manual and a 7-speed dual-clutch automatic (DCT). Owners appreciate the 135i for its nimble handling, strong acceleration, and classic BMW styling. Common complaints include higher maintenance costs compared to other cars, potential for certain mechanical issues, and a somewhat firm ride quality.

Engine

N55 3.0L Turbocharged Inline-Six

• Oil Filter Housing Gasket Leak
  • Description/Symptoms: Oil leak from the oil filter housing, visible oil drips, burning oil smell.
  • Solution: Replace the oil filter housing gasket.
  • Estimated Cost to Fix: $300 - $600+
  • Recalls: None Found
• Valve Cover Gasket Leak
  • Description/Symptoms: Oil leak from the valve cover, burning oil smell, visible oil on the engine.
  • Solution: Replace the valve cover gasket.
  • Estimated Cost to Fix: $400 - $800+
  • Recalls: None Found
• High Pressure Fuel Pump (HPFP) Failure
  • Description/Symptoms: Long cranking times, rough idling, hesitation upon acceleration, engine stalling, check engine light.
  • Solution: Replace the high-pressure fuel pump.
  • Estimated Cost to Fix: $800 - $1500+
  • Recalls: None Found
• VANOS Solenoid Issues
  • Description/Symptoms: Rough idling, loss of power, check engine light.
  • Solution: Clean or replace the VANOS solenoids.
  • Estimated Cost to Fix: $200 - $600+
  • Recalls: None Found

Transmission

6-Speed Manual

• Clutch Wear
  • Description/Symptoms: Clutch slippage, difficulty shifting, high engagement point.
  • Solution: Replace the clutch disc, pressure plate, and throw-out bearing.
  • Estimated Cost to Fix: $1200 - $2000+
  • Recalls: None Found

7-Speed Dual Clutch Transmission (DCT)

• Mechatronic Unit Failure
  • Description/Symptoms: Jerky shifting, transmission slipping, failure to engage gears, error messages on the dashboard.
  • Solution: Replace or repair the mechatronic unit.
  • Estimated Cost to Fix: $2500 - $5000+
  • Recalls: None Found

Suspension

• Cracked Front Control Arm Bushings
  • Description/Symptoms: Clunking noises from the front suspension, wandering steering, uneven tire wear.
  • Solution: Replace the front control arm bushings or the entire control arms.
  • Estimated Cost to Fix: $300 - $800+
  • Recalls: None Found

Electrical

• Battery Drain
  • Description/Symptoms: Car battery drains quickly, especially when the car is not being used.
  • Solution: Diagnose and repair parasitic drain, replace the battery.
  • Estimated Cost to Fix: $150 - $500+
  • Recalls: None Found
• Faulty Window Regulator
  • Description/Symptoms: Windows move slowly or not at all.
  • Solution: Replace the window regulator.
  • Estimated Cost to Fix: $300 - $600+
  • Recalls: None Found

Exterior

• Water Pump Failure
  • Description/Symptoms: Overheating, coolant leaks.
  • Solution: Replace the electric water pump and thermostat.
  • Estimated Cost to Fix: $600 - $1200+
  • Recalls: None Found

Interior

• No Issues Found

Summary

The 2011 BMW 135i is a fun-to-drive vehicle but can be prone to certain issues. Engine issues like oil leaks and HPFP failures can be expensive to repair. The DCT transmission, if equipped, can experience costly mechatronic unit failures. Suspension issues are fairly common but relatively affordable to address. Electrical problems, while less frequent, can still occur. Overall, potential buyers should be aware of these common issues and budget accordingly for maintenance and repairs. The severity of the issues ranges from minor inconveniences to major mechanical failures, with repair costs varying widely depending on the specific problem.