Quote:
Originally Posted by dragerboy
He also said the visible smoke test with a dpf car is only related to Euro Zone 6 cars 2014 onwards but I've looked through the MOT guide and not sure if this is true.
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It's not correct. Cars first used after January 2014 have to hit a lower emissions limit on the emissions testing machine but there is also a visual check for any smoke for all vehicles fitted with a DPF (including those before Jan 2014). There should be no visible smoke - if there's any visible smoke then it's a fail. It was introduced because cars which should've failed the previous visual check for tampering / removal of the DPF were still getting passed.
Good luck trying to get zero visible smoke with no DPF.