Bmw M240I Specifications​ – Unlocking Its Performance & Potential

ByRobert Lozano

The BMW M240i is a potent machine, blending luxury with serious performance. Understanding its core specifications is crucial for any owner, whether you’re planning routine maintenance, contemplating performance upgrades, or simply want to appreciate the engineering marvel under the hood. This guide will break down everything you need to know about the M240i’s key figures and what they mean for your driving experience.

The allure of a compact, powerful sports coupe like the BMW M240i is undeniable. For many car enthusiasts and weekend DIY mechanics, knowing the intricate details of their vehicle’s engineering is as satisfying as the drive itself. You want to understand what makes your car tick, how to best maintain it, and perhaps even how to coax a little more performance out of it. This article is your comprehensive guide to the bmw m240i specifications​, designed to arm you with the knowledge to truly appreciate and care for your Bavarian beast.

We’ll dive into the heart of its performance, dissect its handling capabilities, and even touch on the creature comforts that make it a joy to live with daily. By the end, you’ll have a rock-solid understanding of your M240i, empowering you to make informed decisions about its upkeep and potential enhancements.

Diving Deep into bmw m240i specifications​: Engine & Drivetrain

At the core of the M240i’s exhilarating performance lies BMW’s celebrated B58 turbocharged inline-six engine. This powerplant is a marvel of modern engineering, renowned for its smoothness, responsiveness, and impressive power delivery.

The B58 Engine: Power and Precision

The B58 is a 3.0-liter, single-turbocharged inline-six engine. Over its various iterations, it has consistently delivered robust figures. For the M240i (G42 generation), you’re typically looking at:

  • Horsepower: Around 382 hp (285 kW) at 5,800-6,500 rpm. Earlier F22 generation models might be closer to 335-340 hp.
  • Torque: A hefty 369 lb-ft (500 Nm) available from a low 1,800 rpm all the way up to 5,000 rpm. This broad torque band is what gives the M240i its incredible real-world shove.
  • Redline: Typically around 7,000 rpm, allowing for a satisfying pull through the gears.

These figures translate directly into a thrilling driving experience, with rapid acceleration and effortless overtaking. The B58 is also known for its durability, but proper maintenance, including using premium unleaded fuel (91 AKI or higher) and the correct synthetic oil (BMW Longlife-01 or newer specifications), is paramount.

Transmission: ZF 8HP Automatic

The M240i exclusively uses the venerable ZF 8HP eight-speed automatic transmission. This isn’t just any automatic; it’s widely regarded as one of the best in the business.

  • Gear Ratios: Optimized for both performance and fuel efficiency.
  • Shift Speed: Lightning-fast shifts, especially in Sport and Sport+ modes.
  • Smoothness: In Comfort mode, shifts are imperceptibly smooth, enhancing daily drivability.

The ZF 8HP is incredibly robust, but like any precision component, it benefits from regular fluid changes, especially if you drive aggressively or track the car. Consult your owner’s manual for specific service intervals, or consider a transmission fluid and filter service every 60,000-80,000 miles as a preventative measure.

Drivetrain: Rear-Wheel Drive (RWD) vs. xDrive All-Wheel Drive (AWD)

Depending on the model year and market, the M240i is available with either a classic rear-wheel drive (RWD) setup or BMW’s intelligent xDrive all-wheel drive system.

  • RWD: Offers a pure, traditional sports car feel, often preferred by purists for its dynamic handling characteristics and lighter weight.
  • xDrive: Provides superior traction in all weather conditions and allows for incredible launch control starts. While slightly heavier, modern xDrive systems are rear-biased, maintaining a sporty feel.

Understanding these bmw m240i specifications​ for the drivetrain helps you appreciate how the power is put to the ground. For xDrive models, remember to perform tire rotations and ensure all four tires are of the same size and tread depth to prevent undue stress on the AWD system.

Chassis, Suspension, and Handling Prowess

The M240i isn’t just about straight-line speed; its handling dynamics are equally impressive, thanks to a carefully engineered chassis and sophisticated suspension system. This is where BMW’s “Ultimate Driving Machine” philosophy truly shines.

Adaptive M Suspension and Steering

Many M240i models come equipped with the Adaptive M Suspension, which uses electronically controlled dampers to adjust damping forces at each wheel. This allows the car to switch between comfortable cruising and firm, sporty handling on demand.

  • Comfort Mode: Soaks up road imperfections for a smoother ride.
  • Sport/Sport+ Modes: Stiffens the suspension, reduces body roll, and sharpens steering response for more engaging driving.
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The variable sport steering also adjusts the steering ratio based on speed and steering angle, making it lighter at low speeds for easy parking and heavier at high speeds for greater stability and precision. Regularly checking suspension components like bushings and shock mounts is vital for maintaining optimal handling.

Weight Distribution and Structural Rigidity

BMW prides itself on near 50/50 weight distribution, and the M240i is no exception. This balanced approach is fundamental to its neutral handling characteristics and predictability at the limit. The car’s robust chassis is designed for high torsional rigidity, which means less flex and more precise feedback to the driver.

For DIYers, understanding the layout means knowing where to place your jack stands safely. Always use the factory-designated jack points, and consider investing in quality jack pads to protect the chassis rails.

Braking Performance & Wheel/Tire Details

To match its impressive acceleration, the M240i features a robust braking system and carefully selected wheel and tire combinations.

M Sport Brakes

Most M240i models come standard with M Sport brakes, which offer excellent stopping power and fade resistance. These typically include:

  • Front Rotors: Large, often vented and cross-drilled, for superior heat dissipation.
  • Front Calipers: Multi-piston fixed calipers (e.g., 4-piston) for strong, consistent clamping force.
  • Rear Rotors/Calipers: Vented rotors with single or dual-piston calipers.

When performing brake maintenance, always use genuine BMW or high-quality OEM equivalent brake pads and rotors. Bleeding the brake lines with fresh DOT4 brake fluid annually, especially if you drive hard, is a smart safety practice.

Wheels and Tires

The M240i typically comes with staggered wheel setups, meaning wider tires on the rear axle for improved traction. Common sizes include:

  • Front Wheels: 18 or 19 inches.
  • Rear Wheels: 18 or 19 inches, often wider than the front.
  • Tires: Performance-oriented summer tires are standard, often run-flats.

Checking tire pressure regularly (refer to the sticker on your driver’s side door jamb for exact pressures) is crucial for both safety and performance. Consider a dedicated set of winter tires if you live in a cold climate, as summer tires lose grip dramatically in freezing temperatures.

Interior Comfort, Technology, and Driver Aids

Beyond the raw performance, the M240i offers a refined interior packed with technology and comfort features, making it a surprisingly practical daily driver.

Driver-Focused Cockpit

The interior design is unmistakably BMW, with high-quality materials and excellent ergonomics. Key features often include:

  • Sport Seats: Supportive and comfortable, often with adjustable bolsters.
  • M Sport Steering Wheel: Thick-rimmed and tactile, providing excellent grip.
  • Digital Instrument Cluster: Customizable displays providing essential driving information.

Regular interior cleaning with appropriate automotive cleaners will keep your M240i feeling fresh. Pay attention to leather care to prevent cracking and fading.

Infotainment and Connectivity

BMW’s iDrive infotainment system is a central feature, typically accessed via a rotary controller and a high-resolution touchscreen. It offers:

  • Navigation: Integrated GPS with real-time traffic updates.
  • Apple CarPlay/Android Auto: Seamless smartphone integration.
  • Harman Kardon Sound System: Often an option, providing a premium audio experience.

Keeping the iDrive software updated can improve functionality and address potential bugs. This often requires a visit to a BMW dealership or using specific diagnostic tools for DIY updates.

Advanced Driver-Assistance Systems (ADAS)

Modern M240i models come with a suite of ADAS features designed to enhance safety and convenience:

  • Active Cruise Control: Maintains a set distance from the car ahead.
  • Lane Departure Warning: Alerts you if you drift out of your lane.
  • Blind Spot Monitoring: Warns of vehicles in your blind spots.

These systems rely on various sensors (radar, cameras). If you’re working on the front bumper or windshield, be aware of these components and ensure they are properly reinstalled and calibrated if disturbed. When in doubt, always consult a professional for ADAS-related repairs.

Real-World Performance and Fuel Economy

While the raw bmw m240i specifications​ paint a picture of power, how does it translate to the road, and what can you expect in terms of efficiency?

Acceleration and Top Speed

The M240i is seriously quick. With the B58 engine and ZF 8HP transmission, 0-60 mph times are typically:

  • xDrive: Around 4.0-4.3 seconds.
  • RWD: Around 4.5-4.7 seconds.

Top speed is electronically limited to 155 mph (250 km/h) in most markets, though some M Performance packages or de-limiters can raise this. Always respect speed limits and drive responsibly.

Fuel Economy

Despite its performance, the B58 engine is remarkably efficient thanks to direct injection and variable valve timing. EPA estimates for the M240i often hover around:

  • City: 20-23 MPG (miles per gallon)
  • Highway: 29-32 MPG
  • Combined: 24-27 MPG
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Your actual mileage will vary based on driving style, traffic conditions, and whether you’re constantly enjoying that turbo boost. Remember, premium fuel is required, so factor that into your running costs.

Maintaining Your M240i: Key Specifications for DIYers

For the weekend wrench, understanding specific maintenance specifications is crucial for keeping your M240i running optimally and avoiding costly mistakes.

Fluid Capacities and Types

  • Engine Oil: Typically 6.5 liters (approx. 6.9 quarts) of synthetic oil, BMW Longlife-01, Longlife-04, or Longlife-17FE+ specification. Always verify with your owner’s manual.
  • Coolant: BMW-specific coolant (blue in color), mixed 50/50 with distilled water. Capacity varies but is usually around 8-10 liters.
  • Brake Fluid: DOT4 synthetic brake fluid.
  • Transmission Fluid: ZF Lifeguard 8 or equivalent. This is often considered a “lifetime” fill by BMW, but many enthusiasts and mechanics recommend changing it every 60,000-80,000 miles.

Always use the correct fluid types and capacities. Using the wrong oil or coolant can lead to serious engine damage. When checking fluid levels, ensure the car is on a level surface.

Torque Specifications

Accurate torque is vital for critical fasteners. While specific values vary, here are some common areas:

  • Lug Nuts: Typically 140 Nm (103 lb-ft) for most BMWs with M14 bolts. Always use a torque wrench and tighten in a star pattern.
  • Oil Drain Plug: Usually around 25 Nm (18 lb-ft). Use a new crush washer every time.
  • Spark Plugs: Around 23 Nm (17 lb-ft). Be careful not to overtighten, as this can damage cylinder head threads.

Refer to a service manual or reputable online resource (like NewTIS) for precise torque specifications for any job you undertake. Overtightening can strip threads, while undertightening can lead to parts coming loose – both dangerous scenarios.

Common Wear Items and Replacement Intervals

  • Oil & Filter: Every 7,500-10,000 miles or annually, depending on driving style and oil type.
  • Air Filter: Every 30,000-40,000 miles, or more frequently if driving in dusty conditions.
  • Cabin Filter: Every 15,000-20,000 miles, or annually.
  • Spark Plugs: Every 40,000-60,000 miles, depending on engine tune and driving.
  • Brake Pads/Rotors: As needed, based on wear indicators and driving style.

Proactive maintenance based on these bmw m240i specifications​ will not only prolong the life of your vehicle but also ensure it performs at its best. If you’re unsure about any procedure, don’t hesitate to consult a certified BMW technician.

Frequently Asked Questions About the BMW M240i

What is the 0-60 mph time for the BMW M240i?

The 0-60 mph time for the BMW M240i varies slightly by generation and drivetrain. The latest G42 M240i xDrive typically achieves 0-60 mph in a blistering 4.0-4.3 seconds, while RWD versions are slightly slower, around 4.5-4.7 seconds.

What type of engine does the BMW M240i have?

The BMW M240i is powered by BMW’s B58 3.0-liter turbocharged inline-six engine. This engine is renowned for its smooth power delivery, strong torque, and impressive reliability when properly maintained.

Does the M240i come with xDrive?

Yes, the BMW M240i is available with BMW’s xDrive intelligent all-wheel drive system, particularly in the latest G42 generation. Earlier F22 generation M240i models were primarily rear-wheel drive, with xDrive being an option in some markets.

What kind of fuel does the BMW M240i require?

The BMW M240i requires premium unleaded gasoline with an octane rating of 91 AKI (Anti-Knock Index) or higher. Using lower octane fuel can lead to reduced performance and potential engine damage over time.

Is the M240i a good daily driver?

Absolutely. The M240i perfectly balances thrilling performance with everyday usability. Its comfortable interior, sophisticated infotainment, and adaptive suspension make it an excellent choice for daily commuting, while still offering an exhilarating experience on demand.

Conclusion: Mastering Your M240i’s Potential

Understanding the intricate bmw m240i specifications​ is more than just knowing numbers; it’s about appreciating the engineering, anticipating maintenance needs, and unlocking the full potential of your vehicle. From the potent B58 engine and responsive ZF 8HP transmission to the finely tuned chassis and advanced technology, every detail contributes to the M240i’s character as a true driver’s car.

Whether you’re a seasoned DIYer tackling an oil change or simply an owner who loves to know their car inside and out, the knowledge shared here empowers you. Remember to always prioritize safety, use the right tools and parts, and don’t hesitate to consult a professional for complex tasks. Enjoy every mile with your BMW M240i – a car that truly delivers on the promise of driving pleasure!

Robert Lozano
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