BMW M3 vs M4: Door Count Aside, the Real Differences Are Small

The BMW M3 and M4 are two of the most sought-after performance models from the German brand, but beyond the obvious difference in body style, a four-door sedan versus a two-door coupe or convertible, the mechanical story is nearly identical. 0-liter twin-turbocharged inline-six engine, known as the S58, and offer similar power outputs depending on trim.

1 seconds, with rear-wheel drive and a choice of manual or automatic transmissions.

4 seconds. All-wheel drive is only available on Competition models, which also require the eight-speed automatic. A notable exception is the limited-edition M3 Competition Sedan 'Handschalter,' which pairs the higher output with a six-speed manual. The M4 Convertible, meanwhile, is only sold as an xDrive Competition variant, making it the most expensive of the lineup at $98,600.

Standard equipment across both models includes BMW's iDrive system with digital assistant, digital key, adaptive cruise control, premium leather, and a digital instrument cluster. Optional packages add carbon fiber trim, a head-up display, and M Performance parts like colored brake calipers or bucket seats.

Special editions include the lightweight M4 CSL, which drops the rear seats and borrows chassis upgrades from the M4 GT3 race car, and the M3 CS and M3 CS Handschalter, the latter exclusive to North America with a manual gearbox.

Pricing for the 2027 model year starts at $79,300 for the base M3 Sedan, while the base M4 Coupe starts at $82,200. The M3 is the more practical choice with its four doors and better value, especially for those wanting a manual shifter. The M4 appeals more to buyers focused on style and track use, with used prices suggesting convertible versions may hold their value best over time.