Alpina B3 G20

The BMW Alpina B3 G20, introduced 2020 based on seventh-generation 3 Series platform, features extensively-modified S58 3.0-liter twin-turbocharged inline-six engine producing 462 horsepower (340 kW) at 5,000-7,000 rpm and 700 Nm (516 lb-ft) torque in initial specification, upgraded to 495 horsepower and 730 Nm (538 lb-ft) in 2022 facelift through Alpina-specific mono-scroll turbochargers and engine management calibration. Performance-oriented engineering achieves 3.6-second 0-100 km/h acceleration and 305 km/h (190 mph) top speed, transmitted through ZF eight-speed Sport automatic transmission and xDrive all-wheel-drive system with Alpina-specific torque distribution programming.

The B3 represents Alpina interpretation of high-performance sports sedan philosophy combining M Division powertrain components with enhanced refinement, variable damper suspension tuning offering comfort-oriented setup versus M3 track focus, and distinctive Alpina styling including classic 20-spoke alloy wheels and subtle aerodynamic enhancements. Available in both sedan and Touring wagon body styles, the B3 competes against Mercedes-AMG C63 and Audi RS4 with emphasis on grand touring capability rather than absolute track performance. Popular among enthusiasts seeking 300+ km/h capability with daily usability, the G20 B3 combines 495 horsepower output with improved fuel efficiency versus predecessor while maintaining Alpina exclusivity and comprehensive factory warranty coverage from BMW AG partnership.