Despite the scoreline, the match was largely one-sided, the hosts enjoying 64% of possession and weighing in with a gargantuan 32 shots, 10 of which were on target.
Mexico continued to dominate after taking the lead, with Miguel Layun curling a shot against the post from the edge of the box in the 27th minute.
McLaughlin then had to be alert to make a save from Hirving Lozano's long-range effort, tipping the effort wide of the post.
From then on normal service resumed, Mexico peppering their opponents' goalmouth in search of a second goal, but the final whistle eventually blew to gift the visitors a respectable-looking scoreline.
MEXICO (4-2-3-1): Ochoa; Alvarez, Ayala, Salcedo (Marquez 45'), Gallardo; Layun, Herrera (Fabian 58'); Vela (Aquino 63'), G. dos Santos (Peralta 57'), Lozano (Corona 73'); Jimenez (J. dos Santos 57')
SCOTLAND (4-2-3-1): McLaughlin (Bain 45'); O'Donnell, Hendry, McKenna, Shinnie; McGeouch, McLean (Caden 55'); Russell, Paterson (Mulgrew 55'), Christie (McGinn 55'); McBurnie (Morgan 80')