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Importantly, claimed Stellantis, the platform “enables several segment-leading capabilities” that will play to the strengths of each brand that will use it.
Alfa Romeo, for example, will benefit from its “high-performance vehicle dynamics”, while Jeep can exploit its “trail-rated off-road driving” credentials.
Outlining the platform’s flexibility, Marc Issner, who has overseen its development, said it can accommodate ride heights ranging from 140mm to 287mm.
“If you want a curve-hugging, track-ready performance car, a smooth-riding luxury car or a rock-clearing off-roader, we’ve addressed these needs within the platform,” he said.
He added that buyers of Alfa Romeo, Chrysler, Dodge, Jeep and Maserati cars “are passionate and very diverse” and added that Stellantis’s goal is to “avoid saying no to any of their product-specific requirements and requests”.
As an indication of its performance potential, Stellantis said the quickest STLA Large cars will crack 0-62mph in around 2.0sec, with “extreme power that will outperform any of the existing Hellcat V8s”.
The recently retired Dodge Charger Hellcat, for reference, packed 707bhp and 650lb ft of torque and so could crack the same sprint in around 3.7sec.
Stellantis also said the STLA Large has been “optimised for weight and rigidity” and the components used within it are packaged as tightly as possible to maximise interior space.
As an example, all EVs based on this platform will be powered by e-axles – compact units that comprise the motors, inverters and gearbox.
They will be fitted with a conventional 400V electrical architecture as standard but can optionally be upgraded to an 800V system, which will allow charging at rates of up to 270kW.
The largest battery available will be a 118kWh unit giving a maximum range of 500 miles in the most aerodynamically efficient variants, but Stellantis said it has engineered the platform to support different battery chemistries and drivetrain technologies, suggesting this figure could rise in the future.
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