10 Diesel Engines Packing the Most Horsepower You’ll Actually Care About

9. Weichai WP17H — The Semi-Truck Giant

Stepping into commercial territory, this 17-liter diesel monster delivers a jaw-dropping 800 HP and 2,766 lb-ft torque. It powers massive mining trucks and heavy-duty haul vehicles. Semi-trucks like this make consumer diesels look tiny by comparison.