2021 BMW 3 Series M340i: Review, Specs & Performance

by Alex Braham 53 views

Hey there, car enthusiasts! Let's dive into the 2021 BMW 3 Series M340i Sedan 4D, a vehicle that perfectly blends luxury, performance, and everyday practicality. This isn't just your average sedan; it's a statement on wheels. Whether you're a seasoned BMW aficionado or just starting to explore the world of premium sports sedans, the M340i has something to offer.

Overview of the 2021 BMW 3 Series M340i

The 2021 BMW 3 Series M340i represents a sweet spot in the 3 Series lineup. It takes the already impressive qualities of the standard 3 Series and injects a healthy dose of M Performance magic. What does this mean for you? Think exhilarating acceleration, razor-sharp handling, and a refined interior that makes every drive an occasion. The M340i distinguishes itself with a more powerful engine, sport-tuned suspension, and distinctive styling cues that set it apart from its less potent siblings. It’s designed for those who crave a thrilling driving experience without sacrificing the comfort and convenience expected from a luxury sedan.

  • Engine and Performance: The heart of the M340i is its 3.0-liter turbocharged inline-six engine. This powerhouse delivers a substantial 382 horsepower and 369 lb-ft of torque. This isn't just numbers on paper; it translates to blistering acceleration. The M340i can sprint from 0 to 60 mph in a mere 4.4 seconds, making it seriously quick. The engine is paired with an 8-speed automatic transmission that offers smooth and precise shifts. Whether you're cruising on the highway or tackling winding backroads, the M340i's powertrain is always eager to perform.
  • Handling and Driving Dynamics: BMW's M division is renowned for its expertise in chassis tuning, and the M340i benefits greatly from this. The car features a sport-tuned suspension that provides a firm but not harsh ride. It strikes an excellent balance between comfort and control. The steering is precise and well-weighted, offering plenty of feedback to the driver. Combined with the car's near-perfect weight distribution, this makes the M340i a joy to drive on twisty roads. It feels planted and confident, inspiring you to push it harder.
  • Interior and Technology: Stepping inside the M340i, you're greeted with a cabin that exudes quality and sophistication. The materials are top-notch, with premium leather, aluminum trim, and soft-touch surfaces throughout. The seats are supportive and comfortable, perfect for long drives. The M340i also comes packed with technology. BMW's iDrive infotainment system is intuitive and easy to use, featuring a large touchscreen display, crisp graphics, and a wide range of features. You also get advanced driver-assistance systems like lane departure warning, forward collision warning, and automatic emergency braking, adding an extra layer of safety and convenience.

Key Features of the 2021 BMW 3 Series M340i

Let's break down the features that make the 2021 BMW 3 Series M340i stand out. These features not only enhance the driving experience but also contribute to the overall appeal of this remarkable sedan.

  • Engine and Transmission: At the core of the M340i lies a 3.0-liter BMW M TwinPower Turbo inline 6-cylinder gasoline engine. This engine is a masterpiece of engineering, delivering both impressive power and remarkable efficiency. With an output of 382 horsepower, it ensures thrilling acceleration and a dynamic driving experience. Paired with an 8-speed Sport Automatic transmission, gear shifts are seamless and quick, providing optimal performance in any driving situation. The transmission also features Launch Control, allowing for rapid and controlled acceleration from a standstill. This combination of a potent engine and advanced transmission makes the M340i a true performer on the road.
  • Exterior Design: The exterior design of the M340i is both sporty and elegant. It features distinctive M design elements such as the aerodynamically optimized front bumper, side skirts, and rear spoiler. These not only enhance the car's appearance but also improve its aerodynamic performance. The BMW kidney grille with its mesh design adds a touch of aggression, while the dual exhaust outlets emphasize the car's sporty nature. The M340i also comes with standard LED headlights and LED taillights, providing excellent visibility and a modern look. Overall, the exterior design of the M340i strikes a perfect balance between athleticism and sophistication.
  • Interior Comfort and Technology: Inside the M340i, you'll find a cabin designed for both comfort and convenience. The sport seats offer excellent support and are upholstered in high-quality materials. The M leather steering wheel feels great in your hands and provides precise control. The car is equipped with the BMW iDrive infotainment system, which includes a large touchscreen display, navigation, and smartphone integration. You also get a premium sound system, ambient lighting, and a range of other features that enhance the driving experience. The M340i's interior is a comfortable and technologically advanced space that makes every journey enjoyable.
  • Safety and Driver Assistance: The 2021 BMW 3 Series M340i comes standard with a comprehensive suite of safety and driver-assistance features. These include forward collision warning, automatic emergency braking, lane departure warning, and adaptive cruise control. These systems use sensors and cameras to monitor the car's surroundings and provide alerts or interventions to help prevent accidents. The M340i also features a strong and rigid body structure, as well as a range of airbags, to protect occupants in the event of a collision. With its advanced safety features, the M340i provides peace of mind for both the driver and passengers.

Performance and Handling

When it comes to performance and handling, the 2021 BMW 3 Series M340i truly shines. This car is designed to deliver an engaging and exhilarating driving experience, whether you're navigating city streets or carving through winding mountain roads. Let's delve into the specifics of what makes the M340i such a standout performer.

  • Engine Performance: The 3.0-liter turbocharged inline-six engine in the M340i is a marvel of engineering. It produces 382 horsepower and 369 lb-ft of torque, providing effortless acceleration and responsive power delivery. The engine's twin-scroll turbocharger minimizes lag, ensuring that power is available instantly when you need it. The engine also features BMW's Valvetronic variable valve lift and Double-VANOS variable camshaft timing, which optimize airflow and combustion for maximum efficiency and performance. Whether you're accelerating from a stop or overtaking on the highway, the M340i's engine delivers a thrilling surge of power.
  • Transmission and Drivetrain: The 8-speed Sport Automatic transmission in the M340i is perfectly matched to the engine's output. It provides smooth and precise gear changes, whether you're driving in automatic mode or using the paddle shifters for manual control. The transmission also features Launch Control, which allows you to achieve maximum acceleration from a standstill. The M340i comes standard with rear-wheel drive, which provides a classic sports sedan driving experience. However, you can also opt for the xDrive all-wheel-drive system, which enhances traction and stability in all weather conditions. Regardless of which drivetrain you choose, the M340i delivers exceptional performance.
  • Handling and Suspension: The M340i's sport-tuned suspension is designed to provide a balance between comfort and control. It features stiffer springs, dampers, and anti-roll bars compared to the standard 3 Series, which reduces body roll and improves handling. The car also comes with variable sport steering, which adjusts the steering ratio based on vehicle speed and driving conditions. This provides precise and responsive steering at all times. The M340i's M Sport brakes offer strong and consistent stopping power, while the M Sport differential enhances traction and stability during cornering. Overall, the M340i's handling is sharp, precise, and engaging, making it a joy to drive on any road.

Interior and Technology

Moving inside, the 2021 BMW 3 Series M340i doesn’t disappoint. It's a blend of luxury, comfort, and cutting-edge technology, creating an environment that's both inviting and functional. Let's take a closer look at what the interior and technology of the M340i have to offer.

  • Cabin Design and Materials: The interior of the M340i is characterized by its clean lines, premium materials, and attention to detail. The dashboard is well-organized and easy to read, with all of the essential controls within easy reach. The seats are upholstered in high-quality leather and offer excellent support and comfort. The M340i also features aluminum trim on the dashboard, doors, and center console, which adds a touch of sportiness to the interior. Overall, the cabin of the M340i is a comfortable and luxurious space that's perfect for both short commutes and long road trips.
  • Infotainment System: The M340i comes standard with the BMW iDrive infotainment system, which includes a large touchscreen display, navigation, and smartphone integration. The system is intuitive and easy to use, with crisp graphics and responsive controls. You can control the system using the touchscreen, the rotary dial on the center console, or voice commands. The M340i also comes with Apple CarPlay and Android Auto compatibility, allowing you to seamlessly integrate your smartphone with the car's infotainment system. With its advanced features and user-friendly interface, the iDrive system makes it easy to stay connected and entertained on the road.
  • Driver Assistance Features: The 2021 BMW 3 Series M340i is equipped with a range of advanced driver-assistance features that enhance safety and convenience. These include forward collision warning, automatic emergency braking, lane departure warning, and adaptive cruise control. These systems use sensors and cameras to monitor the car's surroundings and provide alerts or interventions to help prevent accidents. The M340i also features a parking assistant, which can automatically steer the car into parking spaces. With its comprehensive suite of driver-assistance features, the M340i provides peace of mind and makes driving easier and more enjoyable.

In conclusion, the 2021 BMW 3 Series M340i Sedan 4D is an exceptional vehicle that offers a compelling blend of performance, luxury, and technology. It’s a car that’s equally at home on the open road as it is navigating city streets, making it a versatile choice for discerning drivers. If you're in the market for a sports sedan that delivers on all fronts, the M340i is definitely worth considering. You won't regret it!