In 1970, the Rebel sedan and coupe received a restyled rear-end, along with a new C-pillar shape and rear quarters, as well as a more massive rear end and bumper. The hardtop was changed to a more sloping roofline with upswept reverse-angle quarter windows, giving them "a somewhat huskier look for 1970". The taillights were integrated into a new loop rear bumper with Rebel spelled out between them. The four-door sedans also had an altered roofline with a slimmer C-pillar and larger, squared-off rear door windows. Similarly as on the coupe, the belt line kicked up beneath the trailing edge of the rear door windows, and then tapered back to the same rear fascia as on the hardtop. The Rebel station wagons saw no change to their rooflines, doors, and rear fascias. The grille was again revised with a horizontal spit in the middle and the name, Rebel, was spelled out on the left lip of the hood. The exterior trim, colors, and model identification locations were also modified for 1970. Rebels were available in base or SST trim. The effect of the changes was summarized by the Auto Editor of Popular Mechanics, "the Rebel has a 'no nonsense' air about it I find appealing.
A major change was to the available V8 engines. The standard 290 cu in (4.8 L) V8 was replaced for 1970 by a new 304 cu in (5.0 L) while the 343 cu in (5.6 L) was also supplanted by a 360 cu in (5.9 L). The "AMX" 390 cu in (6.4 L) was optional on SST models, while a special high-performance 340 hp (254 kW) version was standard on The Machine.
The 1970 restyle lasted only one year before a further restyle and renaming the models as the AMC Matador. The four-door and wagon platform would remain unchanged until the retirement of the Matador line after the 1978 model year.