How Much Does the 2021 BMW M340i Weigh – Detailed Weight Breakdown

The 2021 BMW M340i is a powerhouse of performance and precision, but knowing its exact weight reveals critical insights into its handling and dynamics—essential for enthusiasts and buyers alike.

The 2021 BMW M340i weighs approximately 4,100 pounds (1,860 kg) for the base sedan, with the convertible (M340i Cabrio) tipping the scales at around 4,120 pounds (1,870 kg). This weight balances agility and stability, supporting its dynamic driving experience.

The M340i’s weight stems from its lightweight aluminum chassis, high-strength steel components, and integrated hybrid-assist technology, delivering an optimal power-to-weight ratio for responsive handling.

While the core sedan weighs 4,100 lbs, the M340i’s convertible version adds about 20-30 pounds more due to structural reinforcements and roof support systems. Other M340i variants, such as the M340i xDrive (if applicable), maintain similar weights but differ in all-wheel-drive complexity, which slightly affects total mass.

The engine size—3.0-liter inline-six paired with mild hybrid tech—contributes to the vehicle’s efficient mass distribution, enhancing both performance and ride quality.

The 2021 BMW M340i’s weight directly influences its handling balance, suspension response, and overall agility. At just over 4,100 pounds, it remains nimble for a powerful coupe, enabling precise cornering and quick acceleration.

This weight class positions the M340i competitively in its segment, combining the responsiveness of a mid-sized sports sedan with the refinement expected from BMW’s M lineup—making it a favorite among driving enthusiasts.

Understanding the 2021 BMW M340i’s weight of 4,100 pounds (sedan) and 4,120 pounds (convertible) illuminates its engineering excellence and dynamic performance. Whether you're comparing variants or assessing everyday practicality, this weight plays a key role in its balanced driving experience. Ready to experience the M340i’s blend of power and precision—discover more about its specs today.

Detailed specs and features for the Used 2021 BMW 3 Series M340i including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders, drivetrain and more. The 2025 BMW 3-series remains the sports-sedan standard, combining an athletic chassis and a luxurious cabin with a pair of powerful powertrains. All specifications, performance and fuel economy data of BMW M340i (285 kW / 388 PS / 382 hp), edition of the year 2021 for North America, including acceleration times 0-60 mph, 0-100 mph, 0-100 km/h, 0-200 km/h, quarter mile time, top speed, mileage and fuel economy, power-to-weight ratio, dimensions, drag coefficient, etc.

See detailed specs, features, packages and dimensions by trim level for the 2021 BMW M340. Specs of BMW 3 Series Sedan (G20) M340i (374 Hp) xDrive Steptronic /2019, 2020, 2021, 2022/. View detailed specs, features and options for the 2021 BMW 3-Series M340i xDrive Sedan at U.S.

News & World Report. The BMW M340i curb weight is between 3,849 and 4,008 lbs as specified in our data below, organized by trim, option package, and model year. For example, the 2024 BMW M340i with the Base trim has a curb weight of only 3,849 lbs.

while the 2025 BMW M340i with the xDrive trim has a curb weight of 4,008 lbs. Check out the Vehicle Weight specifications for other makes and models. The latest and exclusive 2021 BMW 3 Series M340i Sedan RWD coverage from CarBuzz.

Manufacturers BMW 3 Series 2021 M340i xDrive specifications Full specs. Explore the BMW G21 3 Series Touring M340i xDrive detailed specs, including 0-60 mph times, horsepower, and handling data. Get all the Info.