BorgWarner Inc, a global leader in innovative and sustainable mobility technologies, has announced a new supply partnership with Stellantis for the automaker’s upcoming Hurricane 4 Turbo gasoline engine. Under the agreement, BorgWarner will provide its 50 mm Variable Turbine Geometry (VTG) turbocharger—a key component engineered to deliver superior efficiency and performance for Stellantis’ future powertrain lineup.
The new Hurricane 4 Turbo engine will make its debut in the 2026 Jeep® Grand Cherokee (late availability), marking a significant advancement in Stellantis’ turbocharged engine family. In addition, BorgWarner will also equip the Jeep Cherokee with its electric Variable Cam Timing (eVCT) system, designed for the automaker’s EP6 four-cylinder engine platform.
“Partnering with Stellantis on these innovative projects reinforces our shared vision for cleaner, more efficient mobility,” said Dr Volker Weng, Vice President, BorgWarner Inc, and President and General Manager of Turbos and Thermal Systems. “Our collaboration has a strong legacy, and this program represents an important step toward next-generation turbo technologies.”
BorgWarner’s newest Variable Turbine Geometry (VTG) turbocharger combines advanced wastegate functionality in a single, innovative system—an industry-first configuration designed to enhance both engine performance and emissions control. This unique integration allows the turbocharger to deliver precise airflow management and optimized boost pressure across varying driving conditions, resulting in smoother and more efficient power delivery.
The wastegate system plays a crucial role in reducing emissions by accelerating catalyst heating during cold starts. By directing exhaust gases strategically at startup, it helps the catalytic converter reach optimal operating temperatures faster, thereby minimizing unburned hydrocarbons and improving overall emissions performance.
Complementing this, the VTG mechanism delivers exceptional control of boost pressure across the entire rev range, ensuring faster throttle response and greater fuel efficiency. The system also supports a high Miller cycle, maintaining robust power at higher speeds while reducing boost at lower rpm. This balance enables engines to achieve strong performance with lower fuel consumption, marking a significant advancement in turbocharging technology for cleaner, more efficient mobility. This innovative configuration allows for a broader operating range and reduced fuel consumption, making it one of the most efficient turbocharging solutions in its class.
The inclusion of BorgWarner’s electric Variable Cam Timing (eVCT) system on Stellantis’ EP6 engine marks the automaker’s first use of this technology. Unlike conventional hydraulic systems, the eVCT operates independently of engine oil pressure and provides a wider cam phasing range, supporting advanced combustion control for better fuel economy and reduced emissions.
By allowing precise valve timing control under various load and temperature conditions, BorgWarner’s eVCT contributes to smoother engine operation, faster response, and improved environmental performance. With these twin technologies—VTG turbocharging and eVCT—BorgWarner continues to play a vital role in helping global automakers meet increasingly stringent emission regulations while delivering enhanced performance. The collaboration with Stellantis reflects both companies’ commitment to pushing the boundaries of internal combustion efficiency within the context of a transitioning automotive landscape.
