1.  The Iyengars are very much fluent in Kannada because they have studied through Kannada medium schools and have native like control over Kannada.  Moreover, when asked, they say that they are more at ease in Kannada than in Tamil during the day-to-day interaction.

2.  Tamil spoken by the Iyengars has taken into its system many features from Kannada which results in a minimal intelligibility to a Tamil speaker from Tamilnadu.

3.  The Iyengars might have migrated from different dialectal areas of Tamilnadu centuries ago and thus we cannot rule out the dialectal retentions.  however, in the absence of any such intra group dialectal variations, it is understood that a sort of post migration dialectal leveling might have taken place.  For the purpose of comparison, we have taken as far as possible the standard spoken Tamil which is acceptable to the whole of Tamilnadu.  In addition to that we have looked into the Brahmin dialect of Tamilnadu too for identifying certain features because some similarity is noticed between the dialect spoken by the Brahmins in Tamilnadu and the BIT.