G23 · 430i Convertible

What the BMW G23 Is

The BMW G23 is the drop-top member of the modern 4 Series family, produced from 2021 through 2026. Where the G22 coupe and G26 Gran Coupe cover the fixed-roof body styles, the G23 delivers the convertible experience. Notably, this generation returned to a lightweight, multi-layer soft-top roof after the previous F33 generation's retractable hardtop — a change that reduces weight, frees trunk space, and lowers the center of gravity. It shares BMW's rear-drive CLAR architecture and the polarizing large vertical kidney grille that defines the G-series 4 Series look.

The Models & Body Styles

In the US market, the G23 was offered exclusively as a two-door convertible across four configurations:

• 430i Convertible — rear-wheel drive, turbo four-cylinder
• 430i xDrive Convertible — all-wheel drive
• M440i Convertible — inline-six performance model, RWD
• M440i xDrive Convertible — the flagship all-wheel-drive variant

Every US G23 uses the ZF eight-speed automatic transmission; a manual was not offered in this body style.

Engines & Drivetrains

The 430i models are powered by BMW's B48 2.0-liter turbocharged four-cylinder, a smooth and efficient engine that suits the convertible's cruising character. Step up to the M440i and you get the celebrated B58 3.0-liter turbocharged inline-six paired with a 48-volt mild-hybrid starter-generator, delivering strong, linear thrust and the classic BMW straight-six soundtrack. Both RWD and xDrive all-wheel-drive layouts were available, letting buyers balance year-round traction against pure rear-drive feel. You can confirm the exact engine and build details of any car using our BMW VIN decoder.

Owning & Buying a G23

As a relatively new platform, the G23 remains largely under factory or CPO warranty coverage for most examples. The B58-powered M440i is the enthusiast's pick, offering effortless performance with proven reliability, while the B48-powered 430i is the value-oriented, fuel-friendly choice. When shopping, verify the soft-top mechanism operates smoothly through its full cycle and inspect the roof fabric and seals for wear. To understand how this convertible fits into BMW's lineage of open-top grand tourers — from the E64 6 Series to the E63 coupe — explore our BMW DNA resource. The G23 is a compelling blend of modern tech, six-cylinder charisma, and top-down enjoyment.