2025 Ram 1500 High Output I6 Needs Premium Fuel, Like All Performance Engines

You might have heard that the 2025 Ram 1500 is ditching the Hemi V8. The truck maker is putting a twin-turbo inline-six in its place, and the high-output version is mighty stout with 540 horsepower and 521 lb-ft of torque. Well, the team at 5th Gen Rams got their hands on an owner's manual and it shows that version of the engine requires 91-octane fuel to run. Knowing that, it probably won't be any cheaper to drive than a fuel-slurping V8, but I don't think that was ever the point.

It's worth noting straight away that only the high-output inline-six requires premium gas. The 3.6-liter Pentastar V6 and the standard-output Hurricane 3.0-liter both run just fine on 87 or 89 octane. Really, it shouldn't come as a surprise that the H.O. needs better fuel. It makes an extra 120 hp and 52 lb-ft of torque compared to the regular Hurricane with the same displacement.