2017 Ford Focus’ Most Common Complaints Stem from Engine Issues and Powertrain Problems. The 2017 Ford Focus currently has 345 registered complaints with the National Highway Traffic Safety Administration, with more than two-thirds of these pointing to the engine and the powertrain.
On a MK3/MK3.5 1.0 ECOboost a defective catalytic converter is quite common. Especially when low quality or low octane fuel is used. There is a huge chance that the problem will come back sooner or later. 1. Quote.
It will also run on lower quality / lower octane fuel but performs a lot less and history showed that the life expectancy of the catalytic converter is considerably shorter. I know several cases where the P0420 DTC code showed just shortly after filling up with lower quality / lower octane fuel. In some cases filling up with good quality / high
16. Name: Richard. Ford Model: Focus ecoboost. Ford Year: 2019. UK/Ireland Location: Cambridgeshire. Posted January 1, 2022. Hello All, has any members experienced 2019 (68 plate) Focus 1.0 eco boost juddering/vibration/mis-fire when trying to maintain a constant speed around 67 mph in 6th gear and around 58 mph in 5th gear after slowing down
Cars built between 2012 and early 2013 with the 1.0-litre Ecoboost have been known to leak coolant, which can ultimately lead to engine failure. Ford has since modified and retrofitted a new hose
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