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Mazda BT-50 2015: Dropping back from 6th gear to 5th on a slight incline

My 2015 Mazda BT-50 starts to drop back from 6th gear to 5th on a slight incline on the road when it would not usually happen. Then it starts to loose power and goes into like a limp mode. This happens when highway driving from 200 to 300 km. No warning lights are displayed. If you leave it turned off for a few hours or overnight it’s right to go again. You can drive around town all day. No problem.

As there are no warning lights, and it recovers if left, it doesn’t seem likely that it’s an electronic issue, rather a mechanical one. It would worth checking the turbocharger.

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