Terrell Zachery had seven catches for 148 yards and Darvin Adams gained 106 yards on four receptions. Mario Fannin ran for a 42-yard touchdown and Mike Dyer scored on a 37-yarder.
The Tigers' 48 first-half points were one shy of the school record set 15 years ago in a 76-10 win over Chattanooga. Wes Byrum missed an extra-point attempt after the fourth TD of the opening quarter to end a streak of 102 in a row.
Auburn had eight plays of 20-plus yards in the half.
Newton's teammates had little to say about his situation, but said his demeanor hadn't changed in the previous couple of days.
"Cam is being Cam," Adams said, "and Cam is still going to be Cam."
Chattanooga racked up a few highlights. Brian Sutherland had a 98-yard kick return for a touchdown early in the second quarter.
Tennessee transfer B.J. Coleman completed 20 of 39 passes for 210 yards and a touchdown. Sutherland had 10 catches for 97 yards. Joel Bradford broke Alonzo Nix's single-season Chattanooga receiving record of 1,060 yards with a third-quarter catch.
"We were able to move the football up and down the field a little bit," Coleman said. "(Auburn's) going to have a chance to play for the national championship, which is what they've wanted for a long time. But we've just got to move on to the next one."
It was little more than a tuneup for Auburn, which finishes out the regular season against chief rivals Georgia and Alabama.
Asked if he felt differently this week, Newton shot back: "I feel 10-0. That's about it."
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