Speaking before kick-off in Edinburgh, the 128-times capped Irish fly-half spoke about how difficult it is to win away from home in the Six Nations.
He came away, however, believing Ireland could have won the game by even more despite having “another couple of gears to go”.
“If you’re looking for a formula of how to go away and win in the Six Nations I think you should study that,” he said.
“It was ruthless from minute one – total domination. Scotland didn’t get any in.
“Normally in a Test match, the lead changes hands a couple of times and it’s in the balance.
“The biggest surprise is that it finished 32-18. It felt like a 40-point victory and maybe if Ireland need to, I think they’ve another couple of gears to go.”
Ireland will play France at home next month, in between trips to Wales and Italy, with O’Gara feeling there is “definitely a Grand Slam” there for his old side – but he sees the visit of Les Bleus to Dublin as the biggest potential stumbling block.
“There’s one game that jumps out,” he added.
“In terms of player ability, France have the capacity to beat Ireland in Dublin.
“If they get their ‘A’ game, France have the rugby that they could potentially challenge Ireland.”
