The success and impact of the Vision EfficientDynamics concept paved the way for BMW's next strategic
step: the creation of an entirely new sub-brand dedicated to sustainable mobility. In February 2011, BMW
officially launched the "BMW i" sub-brand. The name "i" was chosen to represent values such as "inspiration,
intelligence, and innovation", signaling a new era of premium mobility with a strict focus on sustainability
across the entire value chain. The BMW i8, based directly on the Vision EfficientDynamics concept, was
announced as one of the two launch models, alongside the fully electric urban BMW i3.
The Revolutionary LifeDrive Architecture
At the heart of the i8 and the entire BMW i philosophy was a completely new and radical construction
approach: the LifeDrive architecture. Instead of adapting a combustion car platform, BMW developed a
two-part structure, designed from the ground up for the demands of an electrified vehicle.
The "Life" Module constituted the passenger cell and was manufactured from Carbon
Fiber Reinforced Plastic (CFRP). This high-tech material, previously reserved for limited-production
supercars and race cars, offered the rigidity of steel at half the weight, and was about 30% lighter than
aluminum. The extensive use of CFRP was a fundamental engineering decision. A plug-in hybrid system adds
considerable weight to a vehicle, due to the battery, the electric motor, and the power electronics. In a
sports car, where weight is the enemy of performance, this was a significant barrier. CFRP was not,
therefore, an aesthetic or luxury choice, but a technical necessity to make the i8 concept viable, allowing
the extra weight of the hybrid system to be almost entirely offset.
The "Drive" Module, in turn, was an aluminum chassis that housed the entire
powertrain: the combustion engine, the electric motor, the high-voltage battery, the suspension, and the
structural safety components. The battery was positioned in the center of the vehicle, in an "energy tunnel"
that ran the length of the chassis. This arrangement resulted in an almost perfect 50/50 weight distribution
between the front and rear axles and gave the i8 the lowest center of gravity of any BMW vehicle at the
time, a crucial factor for its agility and dynamic behavior.
This "blank sheet" approach resolved the compromises inherent in early electrified vehicles, which
were often adaptations of existing platforms. The LifeDrive architecture allowed for a complete optimization
of space, dynamics, and safety, demonstrating that an electrified car could be superiorly designed from the
start. Furthermore, the commitment to sustainability extended to production. The BMW plant in Leipzig,
Germany, where the i8 was assembled, was designed to be one of the most eco-friendly in the world, being
entirely powered by energy generated by its own wind turbines.