2011 Bmw 335D Automatic Sedan Specs – Unveiling The Diesel

This article dives deep into the precise specifications of the 2011 BMW 335d automatic sedan, a beloved diesel performance machine. We’ll cover everything from its potent N57 engine and robust transmission to its dimensions, fuel economy, and key maintenance considerations for owners and enthusiasts. Understanding these details is crucial for maximizing your driving experience and preserving your vehicle’s longevity.

Many car enthusiasts appreciate a blend of raw performance and impressive fuel efficiency, a rare combination the 2011 BMW 335d masterfully delivers. This unique diesel sedan stands out in BMW’s lineup, offering a thrilling driving experience without constantly draining your wallet at the pump.

This comprehensive guide will walk you through every critical detail of the 2011 bmw 335d automatic sedan specs, empowering you with the knowledge to truly understand, maintain, and appreciate this exceptional vehicle. We’ll explore its powerful engine, responsive automatic transmission, precise dimensions, exhilarating performance figures, and vital maintenance insights.

Whether you’re a current owner, a prospective buyer, or simply a fan of German engineering, prepare to delve into what makes the 335d a true diesel powerhouse.

Under the Hood: The N57 Diesel Engine Specifications

At the heart of the 2011 BMW 335d lies the formidable N57D30T0 diesel engine, a marvel of engineering designed for both power and efficiency. This inline-six, common-rail direct injection unit is a significant reason for the car’s legendary status.

Engine Type and Displacement

• Engine Code: N57D30T0
• Configuration: Inline 6-cylinder
• Fuel Type: Diesel
• Displacement: 2993 cc (3.0 liters)
• Valvetrain: DOHC (Double Overhead Camshaft), 4 valves per cylinder

This three-liter engine is known for its smooth operation and robust design. It provides a strong foundation for the car’s impressive performance figures.

Power and Torque Output

The N57 engine in the 335d delivers exhilarating power and, more importantly, immense torque. This is where the diesel truly shines, providing instant acceleration.

• Max Horsepower: 255 hp (190 kW) at 4400 RPM
• Max Torque: 425 lb-ft (576 Nm) at 1750-2250 RPM

The broad torque band ensures effortless cruising and powerful overtaking. You’ll feel that surge of power right from low RPMs, making it a joy to drive in various conditions.

Turbocharging System

BMW utilized a sophisticated sequential twin-turbocharging system on the N57. This setup uses two turbos of different sizes to provide optimal boost across the entire RPM range.

• A smaller turbo spools up quickly at low RPMs for immediate response.
• A larger turbo takes over at higher RPMs for sustained power.

This design minimizes turbo lag, giving the 335d a very linear and responsive power delivery. It feels more like a large displacement naturally aspirated engine than a typical turbo-diesel.

The Smooth Operator: Automatic Transmission & Drivetrain

Mating seamlessly with the N57 engine is a highly regarded automatic transmission. This component is crucial for translating the engine’s power into smooth, usable motion.

ZF 6HP Automatic Transmission

The 2011 335d comes equipped with the well-proven ZF 6HP26 6-speed automatic transmission. This transmission is renowned for its durability, smooth shifts, and ability to handle high torque.

• Type: 6-speed automatic with Steptronic manual shift mode.
• Manufacturer: ZF Friedrichshafen.

The Steptronic function allows drivers to manually select gears, offering a more engaging experience when desired. The shifts are quick and precise, enhancing the sporty feel of the sedan.

Drivetrain Configuration

Like many BMW performance sedans, the 335d adheres to a classic and driver-focused drivetrain layout.

• Drivetrain: Rear-Wheel Drive (RWD)

Rear-wheel drive contributes to the balanced handling and engaging driving dynamics that BMW is famous for. It ensures a pure driving experience, especially for enthusiasts.

Dimensions, Weight, and Chassis: Understanding the E90 Platform

The 2011 BMW 335d is built on the E90 generation platform, known for its robust construction and excellent handling characteristics. Understanding its physical attributes helps in appreciating its road manners.

Exterior Dimensions

These measurements define the car’s physical presence and how it navigates different environments, from city streets to open highways.

• Length: 178.2 inches (4527 mm)
• Width: 71.5 inches (1817 mm)
• Height: 55.9 inches (1420 mm)
• Wheelbase: 108.7 inches (2760 mm)

The compact yet substantial dimensions contribute to the 3-series’ agile feel. It’s large enough for comfort but small enough to be nimble.

Curb Weight and Weight Distribution

Weight is a critical factor in performance and handling. The 335d carries its weight well, contributing to its balanced feel.

• Curb Weight: Approximately 3,825 lbs (1,735 kg)

BMW typically aims for near 50/50 weight distribution, which greatly enhances handling and stability. This balance makes the car feel predictable and responsive.

Suspension and Braking System

A capable chassis needs equally capable suspension and brakes to manage its power and weight effectively.

• Front Suspension: MacPherson strut with double-pivot lower control arms.
• Rear Suspension: Five-link independent suspension.
• Brakes: Four-wheel ventilated disc brakes, often with larger calipers and rotors on the 335d compared to lesser models.

These components work in harmony to provide a comfortable ride while maintaining excellent grip and stopping power. Always ensure your brake pads and rotors are in top condition for safety.

Performance & Fuel Economy: Balancing Thrills with Efficiency

The 335d is a rare breed, offering impressive acceleration alongside remarkable fuel efficiency for a performance sedan. This balance is a key selling point.

Acceleration and Top Speed

Thanks to its immense torque, the 335d can hustle. It surprises many with its rapid acceleration off the line.

• 0-60 mph (0-97 km/h): Approximately 5.7 – 6.0 seconds
• Top Speed: Electronically limited to 155 mph (250 km/h)

These figures place it firmly in sports sedan territory, challenging many gasoline-powered counterparts. The power delivery is addictive, especially in the mid-range.

EPA Fuel Economy Ratings

Where the 335d truly shines is its ability to deliver this performance with exceptional fuel economy for its class.

• City: 23 MPG (9.9 L/100km)
• Highway: 36 MPG (6.5 L/100km)
• Combined: 27 MPG (8.7 L/100km)

These ratings are impressive, especially considering the car’s weight and power. Real-world highway cruising can often exceed the EPA estimates, making it an excellent long-distance cruiser.

Key Maintenance & Common Issues for Your 2011 bmw 335d automatic sedan specs

Owning a high-performance diesel like the 335d comes with specific maintenance considerations. Proactive care is essential to avoid common pitfalls and keep your vehicle running optimally.

Diesel Particulate Filter (DPF) Maintenance

The DPF is a crucial component for emissions control. Over time, it can become clogged, especially with frequent short trips.

• Regeneration: The DPF performs automatic regeneration cycles to burn off soot. This requires sustained highway driving.
• Warning Lights: Pay attention to DPF warning lights. If regeneration fails, professional intervention is needed.
• Cleaning/Replacement: A severely clogged DPF may require professional cleaning or, in extreme cases, replacement. This can be costly, so preventative driving is key.

Regular long drives help keep the DPF clear. If you mostly do city driving, consider taking a longer highway trip once a month.

Selective Catalytic Reduction (SCR) System and DEF

The SCR system uses Diesel Exhaust Fluid (DEF) to reduce NOx emissions. This system requires regular refills.

• DEF Consumption: The rate of DEF consumption varies, but typically requires a top-up every 7,000-10,000 miles.
• Warning System: The car provides warnings when DEF levels are low, eventually limiting engine restarts if ignored.

Always use high-quality DEF and keep an eye on your fluid levels. Running out of DEF can leave you stranded or facing expensive resets.

Carbon Buildup and Swirl Flaps

Diesel engines, especially direct injection ones, are prone to carbon buildup on intake valves and ports over time. Swirl flaps, part of the intake manifold, can also become problematic.

• Symptoms: Reduced power, rough idle, decreased fuel economy.
• Prevention: Quality fuel and regular oil changes can help.
• Solution: Walnut blasting is a common procedure to clean carbon buildup from the intake manifold and valves. Inspect swirl flaps during this service.

Addressing carbon buildup proactively can prevent more serious engine issues down the line. Consult a BMW specialist for this complex service.

Fluid Changes and Service Intervals

Adhering to service intervals is paramount for the longevity of your 335d.

• Engine Oil: Use BMW LL-04 approved synthetic oil. Intervals are typically 10,000 miles or annually, but many enthusiasts opt for shorter intervals (7,500 miles).
• Transmission Fluid: While BMW states “lifetime” for the ZF 6HP, experts recommend changing the transmission fluid and filter every 60,000-80,000 miles. This is a critical service for preserving the automatic’s health.
• Brake Fluid: Replace every two years to maintain braking performance and prevent moisture contamination.
• Coolant: Check levels regularly and consider a flush every 4-5 years.

Always use the correct fluids and filters specified by BMW. Attempting a transmission fluid change yourself requires specific tools and knowledge; if unsure, call a professional.

Upgrades and Modifications: Enhancing Your Diesel Beast

For enthusiasts looking to extract even more performance from their 335d, several common modifications are available. Always consider local emissions laws before making changes.

ECU Tuning

A popular modification is an ECU tune, which optimizes engine parameters for increased power and torque. This can significantly boost performance.

• Benefits: Higher horsepower and torque, improved throttle response.
• Considerations: Choose a reputable tuner. Be aware of potential impacts on DPF and SCR systems, and legality in your region.

A good tune can transform the driving experience, but ensure it’s compatible with your vehicle’s emissions equipment.

Exhaust Systems

Upgrading the exhaust can improve flow and enhance the diesel engine’s sound. Many options range from axle-back systems to full turbo-back setups.

• Benefits: Slightly improved performance, more aggressive exhaust note.
• Considerations: Some aftermarket exhausts may impact DPF regeneration or legal emissions.

Research carefully to find an exhaust that meets your sound and performance goals without causing issues.

Suspension Upgrades

For those seeking sharper handling and a more aggressive stance, suspension modifications are common.

• Options: Lowering springs, coilovers, upgraded sway bars.
• Benefits: Reduced body roll, improved cornering, aesthetic enhancement.

Ensure any suspension modifications are professionally installed and aligned afterward. Incorrect setups can compromise safety and handling.

Interior & Safety Features: Comfort and Confidence

Beyond its performance, the 2011 BMW 335d also offers a well-appointed interior and a comprehensive suite of safety features, typical of the BMW brand.

Interior Amenities

The E90 interior provides a driver-focused cockpit with quality materials and thoughtful design.

• Seating: Comfortable and supportive, often available with power adjustments and memory functions.
• Infotainment: BMW’s iDrive system (optional), premium sound systems, Bluetooth connectivity.
• Climate Control: Dual-zone automatic climate control for individualized comfort.

While not the most modern by today’s standards, the interior is functional and well-built, designed for long-distance comfort.

Safety Features

BMW prioritizes safety, and the 335d comes equipped with a range of active and passive safety systems.

• Airbags: Multiple airbags, including front, side, and head airbags.
• Braking Aids: Anti-lock Braking System (ABS), Dynamic Brake Control (DBC), Cornering Brake Control (CBC).
• Stability Control: Dynamic Stability Control (DSC) with Dynamic Traction Control (DTC).

These systems work together to help prevent accidents and protect occupants if a collision occurs. Always ensure all safety systems are in good working order.

Frequently Asked Questions About 2011 BMW 335d Automatic Sedan Specs

What is the engine code for the 2011 BMW 335d?

The engine code for the 2011 BMW 335d is the N57D30T0. It’s an inline 6-cylinder 3.0-liter twin-turbo diesel engine.

What type of automatic transmission does the 2011 335d use?

The 2011 BMW 335d automatic sedan specs include a ZF 6HP26 6-speed automatic transmission with Steptronic manual shift mode. This transmission is known for its durability and smooth operation.

What are the common maintenance issues for a 2011 BMW 335d?

Common maintenance issues for the 2011 335d include Diesel Particulate Filter (DPF) clogging, issues with the Selective Catalytic Reduction (SCR) system (DEF levels), and carbon buildup on intake valves and swirl flaps. Regular maintenance and proper driving habits can mitigate these.

What is the fuel economy of the 2011 BMW 335d?

The EPA estimated fuel economy for the 2011 BMW 335d is 23 MPG city, 36 MPG highway, and 27 MPG combined. Real-world highway mileage can often be even higher.

Is the 2011 BMW 335d rear-wheel drive?

Yes, the 2011 BMW 335d automatic sedan specs confirm it is a rear-wheel drive (RWD) vehicle, offering the classic BMW driving dynamics.

Conclusion

The 2011 BMW 335d automatic sedan is a truly remarkable vehicle, offering an enticing blend of robust diesel performance, surprising fuel efficiency, and classic BMW driving dynamics. Understanding its core specifications – from the potent N57 engine and smooth ZF automatic transmission to its precise dimensions and key maintenance requirements – is vital for any owner or enthusiast.

By staying on top of services like DPF care, DEF levels, and monitoring for carbon buildup, you can ensure your 335d remains a reliable and exhilarating machine for years to come. Whether you’re enjoying its effortless torque on the highway or navigating city streets, this diesel powerhouse continues to impress.

Embrace the unique character of your 335d, perform diligent maintenance, and it will reward you with countless miles of driving pleasure. Drive smart, stay safe, and enjoy the road!