2011 BMW 1 Series M
The 2011 BMW 1 Series M is a high-performance coupe celebrated for its raw driving experience and engaging dynamics. It boasts a turbocharged 3.0-liter inline-six engine producing 335 horsepower and 332 lb-ft of torque (369 lb-ft with overboost). Unlike other 1 Series models, the 1 Series M was only available with a 6-speed manual transmission. Owners often praise the car’s sharp handling, powerful engine, and relatively compact size. Common complaints revolve around the firm ride, especially on rough roads, and the limited availability of the car as it was a one-year-only model. The 1 Series M also has poor fuel economy for its class.
Engine
N54B30T (3.0L Turbocharged Inline-Six)
- High-Pressure Fuel Pump (HPFP) Failure
- Description/Symptoms: Long cranking times, rough idle, engine hesitation, and possible fuel pump malfunction codes (e.g., 29DC, 29F2).
- Solution: Replacing the high-pressure fuel pump with an updated version.
- Estimated Cost to Fix: $800 - $1500+
- Recalls: None Found
- Wastegate Rattle
- Description/Symptoms: A rattling noise, especially at low RPMs, due to worn wastegate bushings in the turbochargers.
- Solution: Replacement of the turbochargers or wastegate repair (if possible). Some owners opt for aftermarket turbo upgrades to eliminate the issue.
- Estimated Cost to Fix: $2500 - $5000+ (turbocharger replacement)
- Recalls: None Found
- Oil Leaks (Valve Cover Gasket, Oil Filter Housing Gasket)
- Description/Symptoms: Visible oil leaks, burning oil smell, and low oil levels. Common leak points include the valve cover gasket and the oil filter housing gasket.
- Solution: Replacing the affected gaskets.
- Estimated Cost to Fix: $200 - $600 (per gasket replacement)
- Recalls: None Found
Transmission
Getrag GS6-53DZ (6-Speed Manual)
- Clutch Slippage/Failure
- Description/Symptoms: Clutch slippage under hard acceleration, difficulty engaging gears, and a burning smell.
- Solution: Replacing the clutch disc, pressure plate, and throw-out bearing. Some owners upgrade to a more robust clutch for increased performance and longevity.
- Estimated Cost to Fix: $1500 - $3000+
- Recalls: None Found
Suspension
- Premature Bushing Wear
- Description/Symptoms: Noises (creaking, clunking) from the suspension, vague steering, and uneven tire wear. Common culprits include the control arm bushings and rear subframe bushings.
- Solution: Replacing the worn bushings. Some owners opt for upgraded polyurethane bushings for improved durability and handling.
- Estimated Cost to Fix: $300 - $1000+ (depending on the bushing and labor)
- Recalls: None Found
Electrical
- No Issues Found
Exterior
- No Issues Found
Interior
- Loose Trim Pieces
- Description/Symptoms: Rattling, popping, or just a general sense of cheapness from the trim pieces inside the cabin.
- Solution: Remove and reattach the trim pieces with clips/adhesive.
- Estimated Cost to Fix: $50-$200+ depending on the trim piece and how extensive the repair needs to be
- Recalls: None Found
Summary
The 2011 BMW 1 Series M, while a highly desirable sports car, is not without its potential issues. The engine is prone to common N54 problems such as HPFP failure, wastegate rattle, and oil leaks. The manual transmission can experience clutch issues, and suspension bushings are known to wear prematurely. Most of the issues are well-documented, and preventative maintenance can help mitigate some of the risks. Repairs can range from relatively inexpensive (gasket replacements) to quite costly (turbocharger replacement). Buyers should be aware of these potential expenses when considering a 1 Series M.