[LeeStokes1]

For the last 5 years the Engine Management light has been illuminated on the dashboard. I've had it checked been told there is no problem but they couldnt turn it off.
Every year it has passed its MOT and i've been told that as the vehicle was registered prior to July 2008 they dont need to test it.
This year ive gone to a different garage ( i've moved location) and they have failed the MOT as engine management light is on.

Should it have failed or not?

[Santa]

Originally Posted by LeeStokes1

You need to inspect MIL fitted to diesel vehicles including hybrids with 4 or more wheels and first used on or after 1 July 2008."

Mines a diesel registered May 2008

Then You have your answer. The latest test was incorrect and the tester was not aware of the cutoff date.

[Santa]

An illuminated engine management light will mean that your vehicle fails its MOT.

From the MOT Tester's Manual:

8.2.1.2. Gaseous emissions

Engine malfunction indicator lamp (engine management light or ‘EML’)

Turn on the ignition and check that the engine malfunction indicator lamp (MIL) illuminates and then goes off. On some vehicles it will be necessary to start the engine before the MIL goes off.
You need to inspect MIL fitted to:

• petrol vehicles including hybrids with 4 or more wheels, not more than 8 passenger seats in addition to the driver’s seat and first used on or after 1 July 2003
• petrol vehicles including hybrids with 4 or more wheels, more than 8 passenger seats in addition to the driver’s seat and first used on or after 1 July 2008
• gas and bi-fuel vehicles including hybrids with 4 or more wheels, not more than 8 passenger seats in addition to the driver’s seat and first used on or after 1 July 2008

Kit cars, amateur built vehicles and American pickups are not required to be fitted with an engine MIL.

[LeeStokes1]

But that's for petrol, LPG or bio-fuel.
Further down it states:
"8.2.2.2. OpacityEngine malfunction indicator lamp (engine management light or ‘EML’)
Turn on the ignition and check that the engine malfunction indicator lamp (MIL) illuminates and then goes off. On some vehicles it will be necessary to start the engine before the MIL goes off.
You need to inspect MIL fitted to diesel vehicles including hybrids with 4 or more wheels and first used on or after 1 July 2008."

Mines a diesel registered May 2008