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Transmission

M66 common faults.

6-speed manual

manual

type

6 speed

gears

450 Nm

torque limit

1 fault write-ups. Important.

Before you buy

Known faults

1 important faults

The gearbox is reliable and durable, but it sits behind particularly powerful engines, and that shows on the shift mechanism: between 100,000 and 150,000 km it often wears out, which makes shifting stiff, and that is most obvious in winter.

Show the rest

Above 200,000 km the bearings can drone and the dual-mass flywheel can knock. The oil level is worth watching, because leaks are common and the gearbox tolerates a dropping level badly.

between 100,000 and 150,000 km

What to check

  • Set off from cold: every gear must engage without snagging
  • Stop and select reverse: it must not grate or need force
  • At a steady speed, listen for noise: a worn bearing drones
2 more steps in the write-up

Transmission data

What this transmission does

Factory data

Type
manual
Gears
6 speed
Torque limit
450 Nm
Clutch
—
Maker
Ford/Getrag
Part number prefixes
—

Generations

Which models it is fitted to

9 generations.

  • Ford Focus Mk2

    Ford

    Mk2

    Focus

    Vauxford / CC BY-SA 4.0

    Ford Focus Mk2

    2004–2007

    Engine

    AODEG6DAG6DBG6DDG6DEG6DFG6DGG8DAG8DBG8DDG8DEG8DFGPDBKKDAKKDBSIDASYDA
  • Ford Focus Mk2.5

    Ford

    Mk2.5

    Focus

    Vauxford / CC BY-SA 4.0

    Ford Focus Mk2.5

    2007–2010

    Engine

    AODEG6DAG6DBG6DDG6DEG6DFG6DGG8DAG8DBG8DCG8DDG8DEG8DFGPDBJZDAMTDAQ7DAQQDASIDASYDA
  • Ford

    Mk2

    Galaxy

    Ford Galaxy Mk2

    2006–2010

    Engine

    AOBAAOBCAZBAHUWAQ4BAQXBAQXBBSEBAUFBAUFBB
  • Ford

    Mk2.5

    Galaxy

    Ford Galaxy Mk2.5

    2010–2015

    Engine

    AOBAAOBCJTBAJTBBKLBAKNBALPBAQXBAQXBBT1BAT1BBT1BCTPWATXBATXBBTYBAUFBAUFBB
  • Ford Kuga Mk1

    Ford

    Mk1

    Kuga

    M 93 / Attribution

    Ford Kuga Mk1

    2008–2012

    Engine

    HYDBHYDC
  • Ford Mondeo Mk4

    Ford

    Mk4

    Mondeo

    Rudolf Stricker / CC BY-SA 3.0

    Ford Mondeo Mk4

    2007–2010

    Engine

    AOBAAOBCAZBAAZBCFFBAHUBAKHBAKLBALPBAPNBAQ4BAQXBAQXBBQYBARHBASEBATBBATBBBTYBAUFBAUFBBUKBAUKBB
  • Ford Mondeo Mk4.5

    Ford

    Mk4.5

    Mondeo

    M 93 / Attribution

    Ford Mondeo Mk4.5

    2010–2014

    Engine

    AOBAAOBCAZBCJTBAJTBBKGBAKLBAKNBALPBAQXBAQXBBT1BAT1BBT1BCTBBATBBBTPBATXBATXBBTYBAUFBAUFBBUKBAUKBB
  • Ford

    Mk1

    S-MAX

    Ford S-MAX Mk1

    2006–2010

    Engine

    AOBAAOBCAZBAHUWAKLBALPBAQ4BAQXBAQXBBSEBATYBAUFBAUFBB
  • Ford

    Mk1.5

    S-MAX

    Ford S-MAX Mk1.5

    2010–2015

    Engine

    AOBAAOBCJTBAJTBBKLBAKNBALPBAQXBAQXBBT1BAT1BBT1BCTPBATPWATXBATXBBTYBAUFBAUFBB

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