There are four different BMW 3 Series trims, primarily differentiated by powertrain: 330i, 330i xDrive, M340i, and M340i xDrive. xDrive models use all-wheel drive, while the others are rear-wheel drive. In 330i configurations, a 2.0-liter turbocharged four-cylinder engine delivers 255 hp and 295 lb-ft of torque, while the M340i models have a 3.0-liter turbo-six with 382 hp and 369 lb-ft. While the specs of the BMW 3 Series models differ, all configurations have an eight-speed automatic transmission.
As standard, the 3 Series comes with 18-inch alloy wheels, power-folding side mirrors with a heating function, and a two-way power glass moonroof. Inside, all trim levels have the BMW Curved Display with its 12.3-inch instrument cluster and 14.9-inch touchscreen display, and 10-speaker sound system. SensaTec upholstery covers the seats, while multi-zone climate control, remote software upgrades, wireless phone charging, forward collision warning, and fatigue/focus alert are other standard specifications. The sporty M340i models have more aggressive styling thanks to their aerodynamic kit, Shadowline exterior trim, and rear spoiler. Inside, these variants have M door-sill finishers and Aluminum Rhombicle Anthracite trim. Being a BMW, there are several options and package upgrades, and these can add items like automatic parking assistance, heated front seats, and a Harman Kardon premium sound system.