The most common signs of bad O2 sensor in Ford Focus are slow acceleration, loss of power, irregular idling, engine hesitation or jerking when accelerating, high fuel consumption, higher tailpipe emissions, foul odor from exhaust, check engine light illuminates, and sometimes stalling.
Ford Focus 3 (EU Market) 1.6 Ti-VCT 125HP Titanium (2011) vs Ford Fiesta 2022 1.0 EcoBoost 125HP Hybrid Auto ST-Line (2022) Peugeot 208 II 1.2 GT-Line PureTech 130 Auto (2019) vs Peugeot 308 SW 2022 1.2 PureTech 130 (2021) vs Ford Fiesta 2022 1.0 EcoBoost 125HP Hybrid Auto ST-Line (2022)
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