BMW is planning an all-electric i4 Convertible featuring a cloth soft top, two doors, and four seats, expected for the 2028 model year, according to a report. The vehicle carries the internal codename NA3.
The i4 Convertible will be based on the Neue Klasse platform, shared with the upcoming i3 sedan. A fixed-roof i4 Coupe (codenamed NA2) is also in development, expected around the same time. The convertible will be sold alongside a combustion 4-series convertible (G23) with production through mid-2029, creating a year of overlap.
The i3 sedan is rated at 440 miles EPA range and features an 800-volt architecture with 400 kW charging and a native NACS port. BMW is also developing electric M4 Coupe and Convertible models, according to one source.
There is some speculation about the i4 Convertible's battery and seating. One source suggests a cheaper i4 40 convertible may use the iX3 40's 316 hp rear motor and 82.6 kWh battery pack, while another notes that the convertible's shorter wheelbase than the i3 sedan (2,898 mm) raises questions about whether it is a true four-seater or a 2+2. The report also states the convertible will be less structurally stiff than the sedan, requiring additional reinforcement.
The i4 Convertible will feature BMW's Panoramic iDrive setup, including a 17.9-inch touchscreen and optional 3D head-up display. In the US, the only current EV convertible is the Maserati GranCabrio Folgore ($206,095, 229 miles EPA range), with dealer discounts reaching up to $85,000. Other EVs like the Fiat 500e cabrio and MG Cyberster are not available in the US.
The current i4 Gran Coupe will end production next year, leaving a one-year gap before the new two-door i4 debuts. The 4 Series family sold 39,379 units in the US last year, while the i4 added 20,114 units. Current i4 models (eDrive40, xDrive40, M60) offer ranges between 230 and 330 miles.
A local BMW contact indicated that US dealers are struggling to get iX3 allocations due to high demand in Europe, suggesting the US release of the i4 Convertible may lag behind Europe.