Question about engine braking

[jimr]

I live in a mountainous area so often need engine braking on steep downhills in my '25 off-road hybrid. Configuring via Tow/Haul mode or choosing a max gear in s+/-, the instantaneous mpg meter drops significantly from 60 (max) down to something like 30 or maybe 40. This indicates to me that unwanted power is being added. I'd think going downhill it should stay pegged at 60. Does anyone know what's going on here?

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[jimr]

I live in a mountainous area so often need engine braking on steep downhills in my '25 off-road hybrid. Configuring via Tow/Haul mode or choosing a max gear in s+/-, the instantaneous mpg meter drops significantly from 60 (max) down to something like 30 or maybe 40. This indicates to me that unwanted power is being added. I'd think going downhill it should stay pegged at 60. Does anyone know what's going on here?

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[BadTrainDriver]

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[Nodak]

I live in a mountainous area so often need engine braking on steep downhills in my '25 off-road hybrid. Configuring via Tow/Haul mode or choosing a max gear in s+/-, the instantaneous mpg meter drops significantly from 60 (max) down to something like 30 or maybe 40. This indicates to me that unwanted power is being added. I'd think going downhill it should stay pegged at 60. Does anyone know what's going on here?

only thing is can think off ...

most likely if you watch the engine will downshift automatically.

especially if you watch it while in drive coming to a stop, you can see the tach blip as you reach zero mph

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