Ibrox side Glasgow Rangers were beaten last night, leaving Steven Gerrard very frustrated after the contest.
Rangers brought in McAuley in the summer to add experience and power to their backline.
However, the veteran centre-back looked shaky alongside Joe Worrall last night in Rangers defence.
Although there was little McAuley could have done to stop the first goal that Rangers conceded, he was partly at fault for Kilmarnock’s winner.
McAuley failed to go and press Jordan Jones, who was given the room to tuck home a shot from range beyond Allan McGregor.
And Sutton has serious worries about the Rangers centre-back’s lack of speed now.
He said: “The issue for Rangers is that even if they dominate possession, you’re thinking that Gareth McAuley cannot run.”
Rangers actually had the lead against Kilmarnock, but they failed to hold out to claim the three points.
The defeat has left Steven Gerrard’s side down in third place in the Scottish Premiership table, and they will now be playing catch up in the race for the title.
Receive exclusive football transfer news and updates twice a week to your mailbox
