- BMW begins extreme winter testing of its Neue Klasse electric sedan in Sweden.
- The model features sixth-generation eDrive, 800-volt architecture and new dynamic control software.
The BMW i3 electric sedan has entered prototype winter testing as BMW advances development of its next-generation Neue Klasse vehicle architecture. Engineers began testing on March 5 at the company’s test center in Arjeplog, Sweden, where extreme cold conditions and icy terrain allow detailed validation of vehicle dynamics, traction systems, and electric drivetrain behavior.
Testing takes place on snow-covered roads and frozen lakes, where development teams evaluate stability, agility, and power delivery under challenging driving conditions. The prototype is expected to make its design debut on March 18, 2026.
Extreme Winter Testing for Neue Klasse Development
At the Arjeplog facility, engineers are completing final calibration of the electric sedan’s driving dynamics. The slippery surface conditions allow developers to fine-tune traction control systems, steering response, and overall vehicle stability.
The prototype uses two electric motors that respond instantly to driver inputs, helping maintain smooth acceleration and precise handling even on low-grip surfaces. The drivetrain’s responsiveness contributes to the balanced driving character traditionally associated with BMW’s 3 Series lineup.
According to engineers, the vehicle remains predictable near handling limits. Stability systems intervene less frequently because the drivetrain and control software maintain grip and balance more effectively during cornering.
Advanced Electric Powertrain and Charging System
The upcoming sedan is built on sixth-generation eDrive technology developed by BMW. The platform integrates an 800-volt electrical architecture designed to improve efficiency, charging performance, and power delivery.
The electric drivetrain can produce up to 469 horsepower and 645 Nm of torque. It combines an electrically excited synchronous motor (EESM) at the rear with an asynchronous motor (ASM) positioned at the front axle.
This configuration supports high-performance all-wheel-drive capability while maintaining efficiency during normal driving conditions. The architecture also enables ultra-fast charging capability of up to 400 kW.
New Dynamic Control System “Heart of Joy”
A central innovation in the Neue Klasse platform is the “Heart of Joy,” one of four advanced vehicle control units managing drivetrain, braking, and dynamic stability functions.
High-Speed Performance Control
The system works together with BMW Dynamic Performance Control software and processes data up to ten times faster than earlier systems. This faster response enables more precise vehicle control, improved traction management, and smoother transitions between acceleration and braking.
Improved Energy Recovery and Braking
The electric sedan also introduces a Soft-Stop braking function designed to eliminate jerks and noise during low-speed braking. The system enhances regenerative braking efficiency while maintaining smooth vehicle deceleration.
By optimizing energy recovery during driving, the vehicle can recharge the battery more effectively without compromising stability or ride comfort.
As development continues in Sweden’s extreme winter environment, the new electric sedan represents a key step in BMW’s broader transition to next-generation electric vehicle platforms and advanced software-controlled driving dynamics.
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