7.3the Big Short ✓ ❲LATEST❳

Dirty injectors or faulty idle air control valves can occasionally cause rough idling or hesitation. Ownership Experience

This is a notable trade-off. Expect roughly 8–10 mpg while towing and 12–14 mpg unloaded, regardless of the load's intensity. Reliability Concerns

For those who want a capable workhorse without the complexity of DEF or DPF systems, the 7.3L is highly regarded, though it requires a tolerance for high fuel costs.

It handles large loads—like a 16,000 lb fifth-wheel—effectively, though users note it lacks the high-torque "grunt" and exhaust braking of engines like the 6.7L Power Stroke.