copied from another site ,seems you cant have anything nowadays
some news of changes to the MOT from December 2011, now unfortunately it is going to be bad news for some ..............
HID lights ie the kit we all like that gives us brilliant headlights, this will be made an MOT failure if these are fitted, now obviously if you can fool the tester into thinking its Xenons then all well and good however they are apparently going to be well briefed on how to tell.
ECU chipped, unfortunately they have found a way of telling through the OBD port (diagnostic plug) on how to tell if the engine is chipped and if chipped you guess it its an MOT failure.
Wiring harness security and condition, they will now do a visual check on wiring harnesses to make sure they are not chaffing etc and that all is secure again MOT failure if adrift etc.
Airbag warning lights illuminated will again be a failure if illuminated.
There are a few other changes but I think this is the biggest things that will affect most of us guys. This info came straight from VOSA so is legitimate
Originally Posted by Vosa
Commission Directive 2010/48/EU of 5 July 2010 adapted Directive 2009/40/EC. Article 2 of Directive 2010/48/EU requires Member States to comply with it by 31 December 2011 at the latest. Annex II and specifically the table at paragraph 4 lists the minimum inspection requirements. We will be working with the Department for Transport and the industry to ensure that we introduce the new Directive requirements in a pragmatic way that satisfies the Commission's intentions. In all cases below the test method is visual and from 1 January 2012 vehicles may fail the MOT test for the following reasons:
Item 4.1.4 deals with the lamp source and lamp compatibility.
Item 6.1.9 deals with Engine Performance and we know how difficult it is going to be to both define and identify "illegal" chipping.
Item 4.11 deals with electrical wiring security and condition
Item 7 deals with safety belts and restraint systems that includes airbag systems missing or malfunction indicator lights illuminated indicating a defect.
There will be consultation on the contents of our Inspection Manual in due course where there will be an opportunity to comment on our proposals.