BMW 3 Series ICE Enters Final Production Development Stage

BMW 3 Series ICE Enters Final Series-Production Development

On September 8, BMW Group announced that the next-generation BMW Group 3 Series with an internal-combustion engine has reached the final stage of series-production development. The new range will follow a technology-open drive system approach, maintaining combustion-engine options while incorporating electrification through 48V mild-hybrid technology. The lineup will use four- and six-cylinder engines, with the engine and electric motor working together to produce total output of 443 hp. BMW said all versions will retain the sporty character associated with the 3 Series as development moves toward production readiness and the completion of final driving dynamics validation.

BMW M350 xDrive Leads the ICE Lineup

The BMW M350 xDrive will serve as the performance flagship of the new BMW 3 Series ICE lineup and will be the only version equipped with a six-cylinder engine. Its chassis has been specially tuned, with improvements to torsional and vertical stiffness intended to support its performance characteristics. An eight-speed Steptronic transmission and BMW xDrive all-wheel drive are standard equipment. The model also receives adaptive M suspension, an M Sport differential and variable sport steering. BMW states that the M350 xDrive can accelerate from 0–100 km/h in 4.1 seconds and reach a top speed of 250 km/h.

Neue Klasse Design Extends Into the Cabin

The new 3 Series models adopt BMW's Neue Klasse design language, combining a long wheelbase, short overhangs and a modern 2.5-box sedan shape. The same design theme continues inside the vehicle, where BMW Panoramic iDrive and BMW Operating System X introduce a new approach to displays and vehicle controls. The interior technology forms part of the broader vehicle architecture being developed for the next-generation range. While the exterior retains the recognizable sedan proportions of the 3 Series, the cabin incorporates the newer display and control concept associated with BMW's Neue Klasse direction.

Final Driving Dynamics Testing Continues

The next-generation 3 Series is currently completing its final driving dynamics tests at BMW's Miramas test center in southern France. Development testing has also taken place under extreme conditions at Arjeplog in Sweden, as well as at the Nürburgring in Germany. These testing locations have been used to evaluate the vehicle across demanding driving environments before the series-production development phase is completed. The continued testing reflects BMW's focus on validating handling, chassis behavior and other dynamic characteristics across different operating conditions ahead of production.

Chassis and Electronics Receive Further Updates

BMW has made several technical updates to the new 3 Series to improve its driving behavior and vehicle systems. The models receive an improved integrated braking system and a revised steering ratio designed to provide more precise handling. The chassis uses a double-joint spring-strut front axle and a five-link rear axle. Across the range, BMW is also introducing a new electronics and software architecture. These changes complement the revised chassis tuning and the vehicle's updated interior technology, creating a broader technical package for the next-generation 3 Series while retaining the model's focus on sporty driving characteristics.

Technology-Open Drive System Supports Multiple Powertrain Options

The technology-open approach allows the next-generation 3 Series range to use four- and six-cylinder combustion engines alongside 48V mild-hybrid technology rather than relying on a single drive system configuration. The mild-hybrid setup combines the engine and electric motor to deliver total output of up to 443 hp in the range. The approach also preserves distinct performance characteristics across the lineup, with the six-cylinder BMW M350 xDrive positioned at the top of the ICE range. This strategy gives the new sedan a broad powertrain structure while BMW completes the final validation work required before series production.

Industry Impact & Outlook

The development signals BMW's continued effort to advance combustion-engine vehicles while integrating electrification, software and updated vehicle architecture into the next-generation 3 Series. For the passenger-car market, the technology-open strategy maintains multiple powertrain choices within a major sedan line while the company applies Neue Klasse design and electronics concepts beyond purely visual changes. The final testing phase in France, Sweden and Germany indicates that chassis, braking, steering and software systems are being validated before production. The next significant step will be completion of development and progression toward series production, with the resulting lineup showing how BMW balances performance-focused ICE models with newer electrified and digital vehicle technologies.

Frequently Asked Questions

What is new about the next-generation BMW 3 Series ICE?
The next-generation BMW 3 Series ICE combines four- and six-cylinder engines with 48V mild-hybrid technology, while adopting Neue Klasse design, updated electronics and revised chassis systems. The range is currently in the final stage of series-production development, with driving dynamics testing underway at BMW's Miramas test center and additional testing completed in Sweden and Germany. The BMW M350 xDrive will lead the ICE lineup with a six-cylinder engine, 443 hp total output, all-wheel drive and a 0–100 km/h acceleration time of 4.1 seconds.