We’ve been driving hybrid vehicles for decades, why don’t we have a diesel-electric parallel hybrid semi truck? I take this hybrid big rig for a test drive. Is it as powerful and intuitive as I expect? Let’s dig!
Why am I driving a European-spec IVECO semi truck? That’s because I’m in Germany at the 2026 ZF Technology Day. This IVECO cabover truck is equipped with an 11-litre FPT Cursor 11 turbo-diesel engine and a ZF 12-speed automated-manual transmission. This engine is rated between 420-480 Horsepower and in between 1,500-1,700 lb-ft of torque depending on its version. This is a standard setup that you’ll find in a lot of trucks on the road today.
The new part includes an electric motor, battery and auxiliary electrical components. It is a hybrid of parallel style. This means that the diesel engine and/or electric motor can send power to the wheels through the transmission. The electric motor is mounted between the turbo-diesel engine and transmission. You see this configuration in the current Ford F-150 PowerBoost Hybrid and Toyota Tundra iForce-MAX Hybrid pickup trucks.
electric motor connects approximately 300 hp To the system. This means that the semi truck can run on electricity alone without starting the diesel engine. This can be of great benefit to you while driving in dense traffic or while roaming around a yard or depot. It provides quiet and efficient driving.
When you need extra power or the battery is getting low on charge, the turbo-diesel engine comes in handy for maximum power and long-range driving. Consider what you may have 700 hp Combined with this hybrid. You can pick up speed faster and climb longer mountain ranges more easily.
When it’s time to slow down, you get the benefit of electric motor regeneration, diesel exhaust/engine braking and transmission gearing. ZF says the system can generate energy at a rate of approximately 200 kilowattWhich can be a significant amount when descending long mountain highways.
The prototype truck I’m driving has a small 30 kWh battery for demonstration purposes. ZF envisions a system that could house either a 100 kWh battery or a 220 kWh battery with its own charging plug. They say this hybrid could make savings when equipped with a larger battery and plug-in system 47% on diesel Fuel and def costs.
After the first quick drive, I noticed that this hybrid operated smoothly and predictably when accelerating and decelerating. It’s a pleasure when you can move from a stop almost in silence and with smooth and uninterrupted movement.
Adding an electrical system to a larger rig can also reduce the size of the engine. If you previously wanted a 15-litre or 13-litre turbo-diesel, you can make do with an 11-litre or 9-litre engine. This may lead to further fuel savings.
Naturally, a hybrid system will increase costs. It includes an electric motor, a battery, inverter and more. This technology isn’t for every use case, but the extra initial cost can be quickly compensated for if you drive a lot in crowded cities or over large hills and mountains.
Please join me in the video below for a first drive and let me know what you think.
