2023 BMW M340i [US]

The BMW 3-Series is the yardstick of sporty driving pleasure by which all other contenders in the premium midsize segment are measured. With more than 45 years of global success under its belt, the 3-Series also embodies the heart of the BMW brand. Precise design modifications shine an even brighter spotlight on the dynamic character of the new 2023 BMW 3-Series. A newly designed cockpit with BMW Curved Display brings ground-breaking modernity and digitalization to the interior. And subtle but distinguishing refinements to the exterior express the promise of a distinctively rewarding driving experience.

Vehicles for the U.S. market will be built exclusively in BMW's newest plant in San Luis Potosí, Mexico.

A global success story and segment leader

Since the debut of the original in 1975, more than 16 million BMW 3-Series have been sold across its generations. And over 1.1 million customers have so far opted for the current generation of the BMW 3-Series introduced in 2019. This means demand has been stronger in the first three years of this generation than for any of the preceding 3-Series generations over the same time period. The BMW 3-Series accounts for around 14 percent of the brand's vehicle sales worldwide.

Drivetrains that emphasize economy or performance, sacrificing neither

Among the signature features of the BMW 3-Series is the range of drivetrains available, striking a balance between driving pleasure and fuel economy. The 2-liter TwinPower Turbo 4-cylinder engine in the 330i provides substantial power and broad torque for brisk acceleration while returning outstanding fuel economy. The efficient yet dynamic 330e remains the plug-in hybrid of choice for those who value an engaging driving experience with zero-emissions capability. And the 3-liter TwinPower Turbo inline-6 was enhanced with 48V mild hybrid technology for model year 2022. All are available with optional xDrive intelligent all-wheel drive.

The fabled BMW inline 6-cylinder engine, enhanced with 48V mild hybrid technology

Mild hybrid technology gives the 3-liter inline 6-cylinder engine in the new BMW M340i and M340i xDrive exceptionally responsive power delivery and optimized efficiency. A 48V startergenerator acts as an electric drive unit to assist the engine, allowing it to operate within a load range optimized for efficiency as often as possible. It also offers the driver an electric boost effect that can instantly give the engine sharper response when accelerating off the line or putting in a quick burst of speed for passing, and significantly refines the operation of the automatic start/stop function.

The mild hybrid system allows intensive use of the electric power generated through Brake Energy Regeneration and stored in an additional battery. This is used not only to provide the engine with its electric power boost, but also - via a voltage transformer - to supply power to the vehicle's 12V electrical system, enabling much more efficient operation of the systems in the vehicle that consume electric power.

Distinctive appearance for the M340i and M340i xDrive

M-specific exterior features such as large air intakes and aerodynamically optimized details also help to give the BMW Performance models in the new BMW 3-Series a dynamic look. The BMW M340i models feature distinctive design elements. Most notably, these include the mesh-design BMW kidney grille, new 18-inch M double-spoke light alloy wheels or optional 19-inch wheels, trapezoidal tailpipes, and an M rear spoiler painted in body color.

To mark the 50th anniversary of BMW M GmbH, the 2023 BMW M340i models will be offered with the classic BMW Motorsport roundels on the hood, trunk, and wheel center caps. With its staggered semicircles in blue, violet, and red, the anniversary emblem is reminiscent of the original BMW M GmbH trademark that was first used on racing cars in 1973.