2020 ST MPG Loss

Troubleshooting

I have a 2020 ST with 50k miles and I woke up one morning and my MPG on the fuel economy page went from 21.5 to 17.5. The vehicle usually wants to go no matter how much pressure you put on the gas petal, but I’ve noticed a slight loss of power recently. It feels like something is holding it back. I do regular oil changes and plugged in my cheap OBD2 scanner and saw no codes. Any advice?

Posted Feb 18, 2026, 2:24 AM UTC

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