10 most powerful car engines of 2025 - ranked and explained

The article ranks and explains the ten most powerful car engines of 2025, highlighting a significant shift toward electric and hybrid powertrains while acknowledging the continued prowess of combustion engines. Notably, seven out of the top ten engines are electric or hybrid, reflecting the automotive industry's transition to electrification. The list is led by the Devel Sixteen, a controversial 12.3-liter quad-turbocharged V16 engine claiming an unprecedented 5,007 horsepower, though its production readiness remains unverified. Following are hybrid and electric powerhouses such as the Koenigsegg Gemera HV8, a four-seater hypercar with a 2,300 HP hybrid powertrain combining a turbocharged V8 and an 800 HP electric motor, and the Rimac Nevera R, a fully electric Croatian hypercar delivering 2,107 HP through four independent motors. Other notable entries include Japan’s Aspark Owl, which uses a lightweight carbon fiber monocoque and a quad-motor