Following the STLA mid-electric platform intended for compact and mid-range models, as well as the STLA undercarriage frame, Stellantis has now also introduced its larger electric architecture. The STLA large floor flexibly adapts to needs in all possible parameters, including drive chains.
If you look at the dimensions, vehicles based on the large STLA platform can be made with a length of 476 to 513 cm, a width of 190 to 203 cm, with a wheelbase of 287 to 308 cm, which is a very wide range. The ground clearance can range from 140 to 288 mm, so the platform can also serve sports cars and off-road vehicles.
As for the electrical architecture, the models receive an 800V network (while retaining the possibility of 400V charging), and the battery pack integrated in the floor can be 85-118 kWh depending on the physical dimensions (width, wheelbase), ensuring a range of up to 800 km. Maximum charging capacity is 4.5 kWh/min.
An electric motor can be installed on any of the STLA Large axles, meaning the model based on it can be front-, rear- and all-wheel drive. Furthermore, the performance characteristics of systems including inverter, motor and speed reduction equipment in a single unit can be modified afterwards, by wireless software update. As a result of all this, acceleration from 0 to 100 km/h can be reduced to less than 3.0 seconds.
However, the big STLA can do more than that: although it is optimized for an electric drivetrain, it can also offer hybrid and even pure inline combustion configurations.
The platform naturally supports Stellantis' new generation technology packages, the STLA Brain central control computer, the STLA SmartCockpit interface, and the STLA AutoDrive autonomous driving systems.
Between 2024 and 2026, eight models from five brands will receive this platform. Among them will be the later models of the Jeep Wagoneer S and Dodge Challenger/Charger, but the Alfa Romeo Stelvio SUV and Giulia sedan will also be replaced by the larger base STLA models.
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