A couple of high profile recalls for EcoBoost cars issued in 2018 may sound alarm bells, but the truth is the faults were not specifically related to the EcoBoost tech. A Focus 1.0-litre EcoBoost recall referred to a nylon pipe potentially overheating in the cooling system, while a potentially more serious fault in the cylinder head of 1.6 The Focus MK3/MK3.5 for example uses the exact same coolant reservoir as the earlier C-max MK1/Focus MK2. This type of reservoir was introduced in 2003 on the C-max MK1 and has been used for many engine types without any problems. The ECOboost engines are the only ones which suffers from premature coolant reservoir failures on a large scale. This is a common problem of the 1.0 ECOboost that is usually caused by not respecting the prescribed oil change intervals or not respecting the prescribed oil specifications. Based on all other symptoms there is a huge chance that the engine already suffered from serious engine damage and may well be beyond repair. They are fine as long as they’re properly maintained and you replace the wet belt on schedule. If you don’t, they have some problems. They have the reputation for two reasons. First is that because changing the wet belt is expensive, people didn’t bother. That, funnily enough, caused loads of engine failures. FOC Supporters. 14.4k. Name: Unofix. Ford Model: Focus 2.0D Titanium X auto - Estate. Ford Year: 2019. UK/Ireland Location: Durham. Posted November 6, 2023. There are garages that now specialise in replacing the wetbelts on Ecoboom engines. For example North West Engines near Preston do the work for about £850. 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 Solution: This is a very common problem with any Ford Focus that was built between 2012 and 2013 that was fitted with 1.0-litre Ecoboost. The problem is caused by a leaking coolant, and it needs a new 'Degas' hose fitted. You can fairly easily check yourself if the Degas hose has been fitted, and if it isn't, you can get one with us. Hello all, this is a bit of a 'what would you do' question. My sister in law has a Fiesta 1.0 Ecoboost, 35k miles, 15 plate I think. Lately she's been getting low oil pressure light and a rattle tdMv.