10 1HD-T vs 1HD-FTE Engine Differences: Specs, Performance & Which to Buy Differences Between 1Hd-t And 1HD FTE Engines If you’re on the lookout for a high-performance Toyota diesel engine, then you’ve probably heard of the 1HD-T and 1HD-FTE, most likely. Both engines are part of Toyota’s legendary HD series—known for their performance, durability, and