Mutual discord-HOWEVER, the influence of this discordance will be modified by other factors influencing Mars and Mercury-the sarvashtakavarga bindus for the signs Mars and Mercury are in, and whether each planet contributes a bindu in the BAV table of the other planet (or not), will modify the degree of the dissonant relationship of Mars and Mercury: now, it wouldn't reverse it, but it could either amplify the dissonant relationship or it could reduce the influence of the dissonant relationship, down to even an unimportant level.
Now, with Mercury in same sign as Mars (ie, both in Virgo), they are in fact conjunct, with Mercury stronger than Mars (unless Mars is retrograde-then they would be approximately even in strength) So the delineation would be of Mercury conjunct Mars as elaborated in the literatue: if the sign they are both in (Virgo) has high sarva bindus, the - indications of this conjunction would be reduced to a minimal effect; if average # of bindus, the - indications of this conjunction would be moderate in effect; if a below average # of bindus, the - indications of this conjunction would be considerable and significant.