A revised hybrid system adds 29 pound-feet of torque to the inline-six, while pricing ranges from $46,675 on the 330i up to $62,775 on the top. 2025 BMW 330i First Test: More Fun, Less Thirst Chassis upgrades and a 48. In addition, the engine gains a 48-volt mild-hybrid system for 2025, and while the power ratings remain the same as before, fuel economy improves.
The 2024 330i with RWD earned Environmental Protection Agency (EPA) fuel-economy ratings of 25 mpg city, 34 mpg highway, and 29 mpg combined. Every 2025 BMW 3 Series will get a mild hybrid system, regardless of powertrain, though it adds just a little power. Detailed specs and features for the 2025 BMW 3 Series 330i including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders, drivetrain and more.
🚗 2025 BMW 3 Series Review: Still the Ultimate Driving Machine? 🚗 The 2025 BMW 3 Series brings subtle but meaningful upgrades to keep it competitive in the luxury compact sedan segment. Now featuring a mild-hybrid assist and the more efficient Miller cycle combustion process, the 330i's B48 2.0. The plug-in hybrid 330e bids farewell this year, but the bigger news is the expansion of the 48V mild-hybrid system to include the 330i, joining the M340i's already enhanced setup.
BMW lists several new color options and new wheel patterns. Production of the 2025 3-Series for the U.S. starts in August.
Prices start at $46,675 for the 330i and at $60,775 for the M340i. The two available 48-volt mild hybrid powertrains aren't changing much. The 330i and 330i xDrive come with the B48 2.0-liter turbo I-4, still making 255 hp and 295 lb.