2011 BMW 335is

Vehicle Introduction:

The 2011 BMW 335is is a high-performance variant of the E90 3 Series. It features a BMW N54 twin-turbocharged inline-6 engine, producing 320 horsepower and 332 lb-ft of torque. The engine is paired with a 6-speed manual or a 7-speed dual-clutch automatic transmission. The 335is is known for its impressive performance, agile handling, and luxurious interior. However, it has also been plagued by a number of issues.

Engine

N54 - Inline 6 Engine

• High-Pressure Fuel Pump Failure:
  • Description/Symptoms: Fuel delivery issues, engine stalling, loss of power
  • Solution: Replace the high-pressure fuel pump
  • Estimated Cost to Fix: $800 - $1,200+
  • Recalls: None Found
• Valve Cover Gasket Leak:
  • Description/Symptoms: Oil leaks from under the valve cover
  • Solution: Replace the valve cover gasket
  • Estimated Cost to Fix: $500 - $800
• Turbine Speed Sensors Failure:
  • Description/Symptoms: Reduced engine performance, check engine light
  • Solution: Replace the turbine speed sensors
  • Estimated Cost to Fix: $300 - $600

Transmission

6-Speed Manual Transmission:

• No Issues Found

7-Speed Dual-Clutch Automatic Transmission:

• Mechatronic Unit Failure:
  • Description/Symptoms: Transmission slipping, shifting problems, loss of drive
  • Solution: Replace the mechatronic unit
  • Estimated Cost to Fix: $2,500 - $3,500+
  • Recalls: 15V540
• Clutches Wear Prematurely:
  • Description/Symptoms: Difficulty shifting gears, clutch slippage
  • Solution: Replace the clutch assembly
  • Estimated Cost to Fix: $1,200 - $2,000+

Suspension

• Front Control Arm Bushing Failure:
  • Description/Symptoms: Clunking noises over bumps, imprecise steering
  • Solution: Replace the front control arm bushings
  • Estimated Cost to Fix: $400 - $600
• Rear Shock Absorber Leaks:
  • Description/Symptoms: Uneven ride, excessive bouncing
  • Solution: Replace the rear shock absorbers
  • Estimated Cost to Fix: $800 - $1,200

Electrical

• Ignition Coil Failure:
  • Description/Symptoms: Misfires, rough idle, reduced performance
  • Solution: Replace the ignition coil
  • Estimated Cost to Fix: $200 - $300
• Alternator Failure:
  • Description/Symptoms: Battery not charging, electrical system issues
  • Solution: Replace the alternator
  • Estimated Cost to Fix: $600 - $900

Exterior

• Headlight Switch Failure:
  • Description/Symptoms: Headlights not turning on or off properly
  • Solution: Replace the headlight switch
  • Estimated Cost to Fix: $250 - $400

Interior

• Climate Control Unit Malfunction:
  • Description/Symptoms: A/C not blowing cold air, temperature fluctuations
  • Solution: Replace the climate control unit
  • Estimated Cost to Fix: $400 - $600
• iDrive System Lag:
  • Description/Symptoms: Slow or unresponsive iDrive interface
  • Solution: Software update or replacement
  • Estimated Cost to Fix: $100 - $300

Summary:

The 2011 BMW 335is is a high-performance car with an impressive engine and handling capabilities. However, it has been known to suffer from a number of issues, including engine, transmission, suspension, electrical, and interior problems. Some of these issues, such as the mechatronic unit failure and the valve cover gasket leak, can be expensive to fix. Overall, the 335is has a mixed reputation for reliability, and potential buyers should be aware of the potential issues before purchasing one.