Chery is developing an upcoming diesel plug-in hybrid mid-size pickup truck that is currently unnamed, but is known as "KP31" which is its internal codename. Once it enters production and goes on sale, it will become the first mass-produced diesel plug-in hybrid pickup truck.
The tentatively named KP31 was previewed by the Rely P3X concept first showed at the Chengdu Auto Show on 2 September, 2025. It was the first concept to be revealed under the Rely brand. The KP31 is a double-cab pickup truck using a ladder frame chassis and is also the first model to use the Kaitan Architecture.
A near-production model was revealed in Australia on 23 February 2026. In March 2026, Chery announced a competition for Australians to name the vehicle, starting on 12 March at 12:00p.m. Australian Eastern Daylight Saving Time (), and closing at 11:50p.m. AEDT on 26 March, with the winner to receive the first unit shipped to Australia.
Chery will first launch the KP31 in Australia in late 2026. A petrol plug-in hybrid version will be made available in 2027.
The KP31's front end has been compared to that of the sixth-generation Ford Bronco because of its circular headlights, flat front end, and full-width grille. The back uses vertical taillights and "CHERY" stamped into black plastic trim on the tailgate. Box-flared fenders are utilized.
The KP31 uses front and rear skid plates, includes, recovery points, a snorkel, and six-lug wheels. Integrated steps are also used in the rear. The bed was designed to sit high above the chassis so that it has minimal intrusion from the wheel arches. Large side-view mirrors and traditional door handles are also utilized.
The KP31 uses a plug-in hybrid system consisting of a 2.5 litre twin-turbocharged diesel inline 4 producing and of torque paired with an electric motor. The specs of the motor and battery are unknown, however it will offer at least of electric range and the battery will be located towards the back of the frame. The KP31's engine has a thermal efficiency of 47% and is said to be 10% more economical than that of a conventional diesel engine.
The KP31 will use front, center, and rear locking differentials and a low-range gearbox.
It will have a payload capacity and a braked towing capacity.