The phrase "a common remark" is correct and usable in written English.
It can be used to refer to a statement or observation that is frequently made or shared among people.
Example: "It's a common remark that practice makes perfect, but the truth is that consistent effort is what leads to improvement."
Alternatives: "a frequent comment" or "a typical observation".
The "same old dirty politics" is a common remark made about Watergate.
That Splendour in the Grass is a special event on Australia's live music calendar was a common remark throughout the day.
"R.I.P. da bruddas – gone but not forgotten," is a common remark, as well as "cant believe this" and "my heart goes out 2 ur wife&kids n the rest of ur family".
A common remark during telephone interviews was that they received little or no information in advance about this sudden new 'task' of great intensity, according to our results about the intensity of care provided by partners (β 34.0; 95% CI 20.9 - 47.1).
A common remark from the students was how much they enjoyed getting to know a grandparent better or learn interesting facts about a friend they never knew.
A common remark was "How could we have known?" Six teenagers had written suicide notes, but these neither enlightened nor soothed the parents.
I am often asked what I do, and when I reply with a great deal of satisfaction that I'm a teacher, the most common remark is "I don't know how you can manage; when I was at school I used to cause all sorts of trouble".
The most common remark I heard was "Il beled lazem timshi" — "The country needs to move forward".
Not surprisingly, students' most common remark after failing their exams is, "I let my parents down". To add to the burden, those who decide (or are pushed) to resit must now ask a further sacrifice of their parents.
Overwhelmingly the most common remark one hears from Iowans who have come to listen to his talks, even from those who are not going to vote for him, is that he is far more lively and humorous than they expected.
"The most common remark I've heard from teachers was that the chapter on evolution was assigned as reading but that virtually no discussion in class was taken," said Dr. John R. Christy, a climatologist at the University of Alabama at Huntsville, an evangelical Christian and a member of Alabama's curriculum review board who advocates the teaching of evolution.
