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Ford Fiesta 1.0 EcoBoost 100hp Active common faults.

2017–2022, hatchback, petrol, 100 HP.

The fault list covers: SFJE, SFJF, SFJH, SFJJ, SFJK, SFJN, SFJP engine, 5MX65, 6MX65, B6-PLUS transmission.

What you save stays on this device only. My saves

3 fault write-ups. All are important. No recall on the list.

If you know the year, pick it. Faults for other years drop out of the list.

Before you buy

Known faults

3 important faults

5MX65 manual: first gear and reverse will not engage

expensive

In the 5MX65 five-speed manual an internal defect can mean that first gear or reverse will not engage: the lever goes across but the gear does not take, or the lever will not move that way at all.

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The defect is inside the gearbox, so the repair means removing and opening the unit.

What to check

  • With the car stationary and the engine running, select first and reverse: both must engage without snagging
  • Pull away in first and reverse as well: the gear must not jump out under load
  • Try it from cold too: the shifting fault is more obvious then
1 more steps in the write-up

6MX65 manual: fast-wearing synchros on the first two gears

expensive

The gearbox is new, so data on its failures is still limited. The known fault is fast wear of the synchros on the first two gears, which makes shifting grate and snag.

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The manufacturer revised the design, and since 2022 the gearbox has been much more reliable. The oil level is worth watching, because it holds very little oil and even a small leak soon brings the level to a critical point.

What to check

  • While rolling, change down into first and second: grating means worn synchros
  • Try it from cold too: the wear is more obvious then
  • Look at the gearbox housing from underneath: it holds very little oil, so a leak turns critical fast
1 more steps in the write-up

B6 Plus manual: the front input shaft bearing and the first-gear synchro

expensive

The gearbox is relatively new, so there is still little data on its failures. The weak point known so far is the front input shaft bearing.

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Beyond that the first-gear synchro can wear quickly. The oil level is worth watching, because the gearbox holds little oil, so even a small leak soon brings the level to a critical point. The versions come with a dual-mass flywheel, which is not the most durable part.

What to check

  • At a steady speed, listen for noise: a worn input shaft bearing drones
  • While rolling slowly, change down into first: grating means a worn synchro
  • Look at the gearbox housing from underneath: it holds little oil, so a leak turns critical fast
1 more steps in the write-up

Checklist

Ford Fiesta 1.0 EcoBoost 100hp Active

First what you would check on any car. Then the faults of this model.

Before you buy

Checklist

The printed sheet starts with what you would check on any car. What you tick stays on this device only.

On every car

Ask the owner

Faults of this model

vinkodex.com · Before you buy it, see what can go wrong.

Engine and transmission

7 engines · 3 transmissions

SFJE · 1.0

74 kW (101 HP) · petrol

5MX65 · 5-speed manual

manual · 5 speed

Torque limit150 Nm
MakerFord/Getrag

We built the code from the model and the gear count. The factory sheet does not state it. More than one engine code is possible. The fault list shows the faults of each. More than one transmission is possible. The gear count does not tell them apart. The code is on the side of the transmission.

Variant data

What is in this version

Factory data

Trim
Active
Body
hatchback
Fuel
petrol
Transmission
manual
Engine size
999 cc
Power
74 kW (101 HP)
Drive
FWD
Production
2017–2022

Factory service interval

The manufacturer specifies this for this version. Of the mileage and the time, the one that comes first is the one that counts.

  • Air filter

    • 60,000 km or 4 years

  • Cabin (pollen) filter

    • 30,000 km or 2 years

  • Brake fluid change

    • first: 3 years, then 2 years(first change at 3 years, then every two years)

  • Spark plugs, petrol

    • 60,000 km or 6 years
All Mk8 versions

Information, not an expert opinion

We write the descriptions, and we put the source next to them. A person reviews them before they go out. They are still information, not a technical expert opinion.

  • A fault on the list does not mean the car you are looking at has it.
  • A fault missing from the list does not mean the model is fault-free. Write-ups are made model by model. Not all of them are done.
  • You decide whether to buy. This is no substitute for an inspection. That needs a workshop and a history check.
Details in the terms