Yes and no. All Mk3 Focus 1.0 are wet belts, all Mk4 Focus 1.0 are timing chain. In the Fiesta it is more complicated. The changeover was 2020 ish, but I haven't seen a definitive build date, it seems to vary a bit depending on model/output.
A basic video of the issues we are now seeing on a regular basis with the Ford 1.0 EcoBoost M1DA engine.If the engine does not get it's regular oil changes u

The 1.5 Liter EcoBoost uses DAMB (Direct Acting Mechanical Bucket) valvetrain that has polished solid buckets or also called tappets. A low friction timing belt-in-oil drives the intake and exhaust camshafts. It also has a dynamic tensioner providing less noise and more efficient running reliability.

The 1.25 might seem a bit sluggish to you , particularly on long inclines. I know ecoboost failure is a low percentage but I wouldn’t be able to stop myself worrying about it. (We haven’t talked about the rusting coolant pipes on the turbo yet). I have 1.5tdci, on some of these the timing belt pulleys shatter .
Only time I’ve experienced early timing belt failure was with an Elantra the first year they came out, but I drove that car hard. 2014 Ford Fiesta SE Hatchback. Cold Air Intake. OBX Header with high-flo cat, resonator, and DC Sports muffler and 2.5” exhaust. N2MB Two Step. If this happens, the engine will simply cut out, with disastrous consequenc­es. The belt slips and moves via the drive teeth, allowing the valve timing to shift, resulting in an expensive coming together of the pistons and valves. The belt interval on the Ford Focus 1.0 Ecoboost is 150,000 miles or 120 months.
Hi, it is already well know that the major early Ford ecoboost engines issue is wet timing belt degradation. This may occur due to incorrect oil servicing or engine flushes. That's why I am very careful with the specific oil type /Castrol magnatec 5W20/ and oil change intervals of my 2016 1.0 Ecoboost Ford Focus. However I was told that even
13COBRA said: If your dealer is 'good', I'd say there's an 80% chance this gets handled up the chain from you. That's an example of a poor dealer, or you being an asshole and them not wanting to help you. Just saying lol. This right here. comming from a ford dealer. So much hate in this thread.
Change interval: Oil type: Focus 1.0 EcoBoost (103 kW) Transaxle, manual: 1,67 L: Check 40000 km/ 24 months: 75W: Focus 1.0 EcoBoost (74 kW) Transaxle, manual: 2,3 L: Check 20000 km/ 12 months: 75W: Focus 1.0 EcoBoost (74 kW) Transaxle, automatic: 7,8 L: Lifelong use: Original oil: Focus 1.0 EcoBoost (92 kW) Transaxle, manual: 2,3 L: Check
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    • ford focus 1.0 ecoboost timing belt change