2025 BMW 4 Series M440i xDrive

The two-door companion to BMW's celebrated 3 Series sedan, the 4 Series boasts a similar blend of performance, practicality and efficiency in stylish coupe and convertible forms. BMW's 4 Series Gran Coupe, which we review separately, shares its front-end styling with the coupe and convertible, but it sports four doors and a swoopier roofline that differentiates it from the 3 Series. For 2025, BMW gave the 4 Series a thorough tech makeover, with hybrid assistance for the engines, a next-generation infotainment system, and distinctive lighting elements front and rear.

Compact luxury coupes and convertibles are a dying breed, leaving the 4 Series with few direct competitors. The Audi A5 and S5 offer similar power wrapped in less controversial sheetmetal at a lower price (especially considering that they come with all-wheel drive). The all-new Mercedes-Benz CLE is hoping to inject life into the segment, while the Lexus RC, at almost a decade old, is nearing the end of its life — and feels like it. Read our Expert Rating below for a thorough analysis of the 4 Series.

Both the 430i's turbocharged 2.0-liter four-cylinder and the M440i's turbo 3.0-liter inline-six receive hybrid assistance for 2025. The electric motor isn't powerful enough to move the 4 Series on its own; rather, it supports the car's stop-start system and provides some extra push during acceleration. The 430i's 2.0-liter underwent a thorough reengineering to increase efficiency — which typically means reduced power — but the hybrid system means total system output is unchanged from last year, at 255 horsepower and 295 lb-ft of torque. The M440i's six-cylinder wasn't as exhaustively reworked, and the electrical components nudge it up to 386 horsepower and 398 lb-ft, increases of 4 hp and 29 lb-ft, respectively.